Data Types

The OPC UA protocol defines 25 builtin data types and three ways of combining them into higher-order types: arrays, structures and unions. In open62541, only the builtin data types are defined manually. All other data types are generated from standard XML definitions. Their exact definitions can be looked up at https://opcfoundation.org/UA/schemas/Opc.Ua.Types.bsd.

For users that are new to open62541, take a look at the tutorial for working with data types before diving into the implementation details.

Builtin Types

Boolean

A two-state logical value (true or false).

typedef bool UA_Boolean;
#define UA_TRUE true UA_INTERNAL_DEPRECATED
#define UA_FALSE false UA_INTERNAL_DEPRECATED

SByte

An integer value between -128 and 127.

typedef int8_t UA_SByte;
#define UA_SBYTE_MIN (-128)
#define UA_SBYTE_MAX 127

Byte

An integer value between 0 and 255.

typedef uint8_t UA_Byte;
#define UA_BYTE_MIN 0
#define UA_BYTE_MAX 255

Int16

An integer value between -32 768 and 32 767.

typedef int16_t UA_Int16;
#define UA_INT16_MIN (-32768)
#define UA_INT16_MAX 32767

UInt16

An integer value between 0 and 65 535.

typedef uint16_t UA_UInt16;
#define UA_UINT16_MIN 0
#define UA_UINT16_MAX 65535

Int32

An integer value between -2 147 483 648 and 2 147 483 647.

typedef int32_t UA_Int32;
#define UA_INT32_MIN ((int32_t)-2147483648LL)
#define UA_INT32_MAX 2147483647L

UInt32

An integer value between 0 and 4 294 967 295.

typedef uint32_t UA_UInt32;
#define UA_UINT32_MIN 0
#define UA_UINT32_MAX 4294967295UL

Int64

An integer value between -9 223 372 036 854 775 808 and 9 223 372 036 854 775 807.

typedef int64_t UA_Int64;
#define UA_INT64_MAX (int64_t)9223372036854775807LL
#define UA_INT64_MIN ((int64_t)-UA_INT64_MAX-1LL)

UInt64

An integer value between 0 and 18 446 744 073 709 551 615.

typedef uint64_t UA_UInt64;
#define UA_UINT64_MIN (uint64_t)0
#define UA_UINT64_MAX (uint64_t)18446744073709551615ULL

Float

An IEEE single precision (32 bit) floating point value.

typedef float UA_Float;

Double

An IEEE double precision (64 bit) floating point value.

typedef double UA_Double;

StatusCode

A numeric identifier for an error or condition that is associated with a value or an operation. See the section StatusCodes for the meaning of a specific code.

Each StatusCode has one of three “severity” bit-flags: Good, Uncertain, Bad. An additional reason is indicated by the SubCode bitfield.

  • A StatusCode with severity Good means that the value is of good quality.

  • A StatusCode with severity Uncertain means that the quality of the value is uncertain for reasons indicated by the SubCode.

  • A StatusCode with severity Bad means that the value is not usable for reasons indicated by the SubCode.

typedef uint32_t UA_StatusCode;

/* Returns the human-readable name of the StatusCode. If no matching StatusCode
 * is found, a default string for "Unknown" is returned. This feature might be
 * disabled to create a smaller binary with the
 * UA_ENABLE_STATUSCODE_DESCRIPTIONS build-flag. Then the function returns an
 * empty string for every StatusCode. */
const char *
UA_StatusCode_name(UA_StatusCode code);

/* Extracts the severity from a StatusCode. See Part 4, Section 7.34 for
 * details. */
static UA_INLINE UA_Boolean
UA_StatusCode_isBad(UA_StatusCode code) {
    return ((code >> 30) >= 0x02);
}

static UA_INLINE UA_Boolean
UA_StatusCode_isUncertain(UA_StatusCode code) {
    return ((code >> 30) == 0x01);
}

static UA_INLINE UA_Boolean
UA_StatusCode_isGood(UA_StatusCode code) {
    return ((code >> 30) == 0x00);
}

String

A sequence of Unicode characters. Strings are just an array of UA_Byte.

typedef struct {
    size_t length; /* The length of the string */
    UA_Byte *data; /* The content (not null-terminated) */
} UA_String;

/* Copies the content on the heap. Returns a null-string when alloc fails */
UA_String
UA_String_fromChars(const char *src);

UA_Boolean
UA_String_equal(const UA_String *s1, const UA_String *s2);

UA_Boolean
UA_String_isEmpty(const UA_String *s);

extern const UA_String UA_STRING_NULL;

UA_STRING returns a string pointing to the original char-array. UA_STRING_ALLOC is shorthand for UA_String_fromChars and makes a copy of the char-array.

static UA_INLINE UA_String
UA_STRING(char *chars) {
    UA_String s; s.length = 0; s.data = NULL;
    if(!chars)
        return s;
    s.length = strlen(chars); s.data = (UA_Byte*)chars; return s;
}

#define UA_STRING_ALLOC(CHARS) UA_String_fromChars(CHARS)

/* Define strings at compile time (in ROM) */
#define UA_STRING_STATIC(CHARS) {sizeof(CHARS)-1, (UA_Byte*)CHARS}

DateTime

An instance in time. A DateTime value is encoded as a 64-bit signed integer which represents the number of 100 nanosecond intervals since January 1, 1601 (UTC).

The methods providing an interface to the system clock are architecture- specific. Usually, they provide a UTC clock that includes leap seconds. The OPC UA standard allows the use of International Atomic Time (TAI) for the DateTime instead. But this is still unusual and not implemented for most SDKs. Currently (2019), UTC and TAI are 37 seconds apart due to leap seconds.

typedef int64_t UA_DateTime;

/* Multiples to convert durations to DateTime */
#define UA_DATETIME_USEC 10LL
#define UA_DATETIME_MSEC (UA_DATETIME_USEC * 1000LL)
#define UA_DATETIME_SEC (UA_DATETIME_MSEC * 1000LL)

/* The current time in UTC time */
UA_DateTime UA_DateTime_now(void);

/* Offset between local time and UTC time */
UA_Int64 UA_DateTime_localTimeUtcOffset(void);

/* CPU clock invariant to system time changes. Use only to measure durations,
 * not absolute time. */
UA_DateTime UA_DateTime_nowMonotonic(void);

/* Represents a Datetime as a structure */
typedef struct UA_DateTimeStruct {
    UA_UInt16 nanoSec;
    UA_UInt16 microSec;
    UA_UInt16 milliSec;
    UA_UInt16 sec;
    UA_UInt16 min;
    UA_UInt16 hour;
    UA_UInt16 day;   /* From 1 to 31 */
    UA_UInt16 month; /* From 1 to 12 */
    UA_Int16 year;   /* Can be negative (BC) */
} UA_DateTimeStruct;

UA_DateTimeStruct UA_DateTime_toStruct(UA_DateTime t);
UA_DateTime UA_DateTime_fromStruct(UA_DateTimeStruct ts);

/* The C99 standard (7.23.1) says: "The range and precision of times
 * representable in clock_t and time_t are implementation-defined." On most
 * systems, time_t is a 4 or 8 byte integer counting seconds since the UTC Unix
 * epoch. The following methods are used for conversion. */

/* Datetime of 1 Jan 1970 00:00 */
#define UA_DATETIME_UNIX_EPOCH (11644473600LL * UA_DATETIME_SEC)

static UA_INLINE UA_Int64
UA_DateTime_toUnixTime(UA_DateTime date) {
    return (date - UA_DATETIME_UNIX_EPOCH) / UA_DATETIME_SEC;
}

static UA_INLINE UA_DateTime
UA_DateTime_fromUnixTime(UA_Int64 unixDate) {
    return (unixDate * UA_DATETIME_SEC) + UA_DATETIME_UNIX_EPOCH;
}

Guid

A 16 byte value that can be used as a globally unique identifier.

typedef struct {
    UA_UInt32 data1;
    UA_UInt16 data2;
    UA_UInt16 data3;
    UA_Byte   data4[8];
} UA_Guid;

extern const UA_Guid UA_GUID_NULL;

UA_Boolean UA_Guid_equal(const UA_Guid *g1, const UA_Guid *g2);

#ifdef UA_ENABLE_PARSING
/* Parse the Guid format defined in Part 6, 5.1.3.
 * Format: C496578A-0DFE-4B8F-870A-745238C6AEAE
 *         |       |    |    |    |            |
 *         0       8    13   18   23           36 */
UA_StatusCode
UA_Guid_parse(UA_Guid *guid, const UA_String str);

static UA_INLINE UA_Guid
UA_GUID(const char *chars) {
    UA_Guid guid;
    UA_Guid_parse(&guid, UA_STRING((char*)(uintptr_t)chars));
    return guid;
}
#endif

ByteString

A sequence of octets.

typedef UA_String UA_ByteString;

extern const UA_ByteString UA_BYTESTRING_NULL;

/* Allocates memory of size length for the bytestring.
 * The content is not set to zero. */
UA_StatusCode
UA_ByteString_allocBuffer(UA_ByteString *bs, size_t length);

/* Converts a ByteString to the corresponding
 * base64 representation */
UA_StatusCode
UA_ByteString_toBase64(const UA_ByteString *bs,
                       UA_String *output);

/* Parse a ByteString from a base64 representation */
UA_StatusCode
UA_ByteString_fromBase64(UA_ByteString *bs,
                         const UA_String *input);

static UA_INLINE UA_ByteString
UA_BYTESTRING(char *chars) {
    UA_ByteString bs; bs.length = 0; bs.data = NULL;
    if(!chars)
        return bs;
    bs.length = strlen(chars); bs.data = (UA_Byte*)chars; return bs;
}

static UA_INLINE UA_ByteString
UA_BYTESTRING_ALLOC(const char *chars) {
    UA_String str = UA_String_fromChars(chars); UA_ByteString bstr;
    bstr.length = str.length; bstr.data = str.data; return bstr;
}

static UA_INLINE UA_Boolean
UA_ByteString_equal(const UA_ByteString *string1,
                    const UA_ByteString *string2) {
    return UA_String_equal((const UA_String*)string1,
                           (const UA_String*)string2);
}

/* Returns a non-cryptographic hash of a bytestring */
UA_UInt32
UA_ByteString_hash(UA_UInt32 initialHashValue,
                   const UA_Byte *data, size_t size);

XmlElement

An XML element.

typedef UA_String UA_XmlElement;

NodeId

An identifier for a node in the address space of an OPC UA Server.

enum UA_NodeIdType {
    UA_NODEIDTYPE_NUMERIC    = 0, /* In the binary encoding, this can also
                                   * become 1 or 2 (two-byte and four-byte
                                   * encoding of small numeric nodeids) */
    UA_NODEIDTYPE_STRING     = 3,
    UA_NODEIDTYPE_GUID       = 4,
    UA_NODEIDTYPE_BYTESTRING = 5
};

typedef struct {
    UA_UInt16 namespaceIndex;
    enum UA_NodeIdType identifierType;
    union {
        UA_UInt32     numeric;
        UA_String     string;
        UA_Guid       guid;
        UA_ByteString byteString;
    } identifier;
} UA_NodeId;

extern const UA_NodeId UA_NODEID_NULL;

UA_Boolean UA_NodeId_isNull(const UA_NodeId *p);

/* Print the NodeId in the human-readable format defined in Part 6,
 * 5.3.1.10.
 *
 * Examples:
 *   UA_NODEID("i=13")
 *   UA_NODEID("ns=10;i=1")
 *   UA_NODEID("ns=10;s=Hello:World")
 *   UA_NODEID("g=09087e75-8e5e-499b-954f-f2a9603db28a")
 *   UA_NODEID("ns=1;b=b3BlbjYyNTQxIQ==") // base64
 * */
UA_StatusCode
UA_NodeId_print(const UA_NodeId *id, UA_String *output);

#ifdef UA_ENABLE_PARSING
/* Parse the human-readable NodeId format. Attention! String and
 * ByteString NodeIds have their identifier malloc'ed and need to be
 * cleaned up. */
UA_StatusCode
UA_NodeId_parse(UA_NodeId *id, const UA_String str);

static UA_INLINE UA_NodeId
UA_NODEID(const char *chars) {
    UA_NodeId id;
    UA_NodeId_parse(&id, UA_STRING((char*)(uintptr_t)chars));
    return id;
}
#endif

The following functions are shorthand for creating NodeIds.

static UA_INLINE UA_NodeId
UA_NODEID_NUMERIC(UA_UInt16 nsIndex, UA_UInt32 identifier) {
    UA_NodeId id; id.namespaceIndex = nsIndex;
    id.identifierType = UA_NODEIDTYPE_NUMERIC;
    id.identifier.numeric = identifier; return id;
}

static UA_INLINE UA_NodeId
UA_NODEID_STRING(UA_UInt16 nsIndex, char *chars) {
    UA_NodeId id; id.namespaceIndex = nsIndex;
    id.identifierType = UA_NODEIDTYPE_STRING;
    id.identifier.string = UA_STRING(chars); return id;
}

static UA_INLINE UA_NodeId
UA_NODEID_STRING_ALLOC(UA_UInt16 nsIndex, const char *chars) {
    UA_NodeId id; id.namespaceIndex = nsIndex;
    id.identifierType = UA_NODEIDTYPE_STRING;
    id.identifier.string = UA_STRING_ALLOC(chars); return id;
}

static UA_INLINE UA_NodeId
UA_NODEID_GUID(UA_UInt16 nsIndex, UA_Guid guid) {
    UA_NodeId id; id.namespaceIndex = nsIndex;
    id.identifierType = UA_NODEIDTYPE_GUID;
    id.identifier.guid = guid; return id;
}

static UA_INLINE UA_NodeId
UA_NODEID_BYTESTRING(UA_UInt16 nsIndex, char *chars) {
    UA_NodeId id; id.namespaceIndex = nsIndex;
    id.identifierType = UA_NODEIDTYPE_BYTESTRING;
    id.identifier.byteString = UA_BYTESTRING(chars); return id;
}

static UA_INLINE UA_NodeId
UA_NODEID_BYTESTRING_ALLOC(UA_UInt16 nsIndex, const char *chars) {
    UA_NodeId id; id.namespaceIndex = nsIndex;
    id.identifierType = UA_NODEIDTYPE_BYTESTRING;
    id.identifier.byteString = UA_BYTESTRING_ALLOC(chars); return id;
}

/* Total ordering of NodeId */
UA_Order
UA_NodeId_order(const UA_NodeId *n1, const UA_NodeId *n2);

/* Check for equality */
static UA_INLINE UA_Boolean
UA_NodeId_equal(const UA_NodeId *n1, const UA_NodeId *n2) {
    return (UA_NodeId_order(n1, n2) == UA_ORDER_EQ);
}

/* Returns a non-cryptographic hash for NodeId */
UA_UInt32 UA_NodeId_hash(const UA_NodeId *n);

ExpandedNodeId

A NodeId that allows the namespace URI to be specified instead of an index.

typedef struct {
    UA_NodeId nodeId;
    UA_String namespaceUri;
    UA_UInt32 serverIndex;
} UA_ExpandedNodeId;

extern const UA_ExpandedNodeId UA_EXPANDEDNODEID_NULL;

UA_StatusCode
UA_ExpandedNodeId_print(const UA_ExpandedNodeId *id, UA_String *output);

#ifdef UA_ENABLE_PARSING
/* Parse the ExpandedNodeId format defined in Part 6, 5.3.1.11:
 *
 *   svr=<serverindex>;ns=<namespaceindex>;<type>=<value>
 *     or
 *   svr=<serverindex>;nsu=<uri>;<type>=<value>
 *
 * The definitions for svr, ns and nsu can be omitted and will be set to zero /
 * the empty string.*/
UA_StatusCode
UA_ExpandedNodeId_parse(UA_ExpandedNodeId *id, const UA_String str);

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID(const char *chars) {
    UA_ExpandedNodeId id;
    UA_ExpandedNodeId_parse(&id, UA_STRING((char*)(uintptr_t)chars));
    return id;
}
#endif

The following functions are shorthand for creating ExpandedNodeIds.

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID_NUMERIC(UA_UInt16 nsIndex, UA_UInt32 identifier) {
    UA_ExpandedNodeId id; id.nodeId = UA_NODEID_NUMERIC(nsIndex, identifier);
    id.serverIndex = 0; id.namespaceUri = UA_STRING_NULL; return id;
}

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID_STRING(UA_UInt16 nsIndex, char *chars) {
    UA_ExpandedNodeId id; id.nodeId = UA_NODEID_STRING(nsIndex, chars);
    id.serverIndex = 0; id.namespaceUri = UA_STRING_NULL; return id;
}

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID_STRING_ALLOC(UA_UInt16 nsIndex, const char *chars) {
    UA_ExpandedNodeId id; id.nodeId = UA_NODEID_STRING_ALLOC(nsIndex, chars);
    id.serverIndex = 0; id.namespaceUri = UA_STRING_NULL; return id;
}

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID_STRING_GUID(UA_UInt16 nsIndex, UA_Guid guid) {
    UA_ExpandedNodeId id; id.nodeId = UA_NODEID_GUID(nsIndex, guid);
    id.serverIndex = 0; id.namespaceUri = UA_STRING_NULL; return id;
}

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID_BYTESTRING(UA_UInt16 nsIndex, char *chars) {
    UA_ExpandedNodeId id; id.nodeId = UA_NODEID_BYTESTRING(nsIndex, chars);
    id.serverIndex = 0; id.namespaceUri = UA_STRING_NULL; return id;
}

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID_BYTESTRING_ALLOC(UA_UInt16 nsIndex, const char *chars) {
    UA_ExpandedNodeId id; id.nodeId = UA_NODEID_BYTESTRING_ALLOC(nsIndex, chars);
    id.serverIndex = 0; id.namespaceUri = UA_STRING_NULL; return id;
}

static UA_INLINE UA_ExpandedNodeId
UA_EXPANDEDNODEID_NODEID(UA_NodeId nodeId) {
    UA_ExpandedNodeId id; memset(&id, 0, sizeof(UA_ExpandedNodeId)); id.nodeId = nodeId; return id;
}

/* Does the ExpandedNodeId point to a local node? That is, are namespaceUri and
 * serverIndex empty? */
UA_Boolean
UA_ExpandedNodeId_isLocal(const UA_ExpandedNodeId *n);

/* Total ordering of ExpandedNodeId */
UA_Order
UA_ExpandedNodeId_order(const UA_ExpandedNodeId *n1,
                        const UA_ExpandedNodeId *n2);

/* Check for equality */
static UA_INLINE UA_Boolean
UA_ExpandedNodeId_equal(const UA_ExpandedNodeId *n1,
                        const UA_ExpandedNodeId *n2) {
    return (UA_ExpandedNodeId_order(n1, n2) == UA_ORDER_EQ);
}

/* Returns a non-cryptographic hash for ExpandedNodeId. The hash of an
 * ExpandedNodeId is identical to the hash of the embedded (simple) NodeId if
 * the ServerIndex is zero and no NamespaceUri is set. */
UA_UInt32
UA_ExpandedNodeId_hash(const UA_ExpandedNodeId *n);

QualifiedName

A name qualified by a namespace.

typedef struct {
    UA_UInt16 namespaceIndex;
    UA_String name;
} UA_QualifiedName;

static UA_INLINE UA_Boolean
UA_QualifiedName_isNull(const UA_QualifiedName *q) {
    return (q->namespaceIndex == 0 && q->name.length == 0);
}

/* Returns a non-cryptographic hash for QualifiedName */
UA_UInt32
UA_QualifiedName_hash(const UA_QualifiedName *q);

static UA_INLINE UA_QualifiedName
UA_QUALIFIEDNAME(UA_UInt16 nsIndex, char *chars) {
    UA_QualifiedName qn; qn.namespaceIndex = nsIndex;
    qn.name = UA_STRING(chars); return qn;
}

static UA_INLINE UA_QualifiedName
UA_QUALIFIEDNAME_ALLOC(UA_UInt16 nsIndex, const char *chars) {
    UA_QualifiedName qn; qn.namespaceIndex = nsIndex;
    qn.name = UA_STRING_ALLOC(chars); return qn;
}

UA_Boolean
UA_QualifiedName_equal(const UA_QualifiedName *qn1,
                       const UA_QualifiedName *qn2);

LocalizedText

Human readable text with an optional locale identifier.

typedef struct {
    UA_String locale;
    UA_String text;
} UA_LocalizedText;

static UA_INLINE UA_LocalizedText
UA_LOCALIZEDTEXT(char *locale, char *text) {
    UA_LocalizedText lt; lt.locale = UA_STRING(locale);
    lt.text = UA_STRING(text); return lt;
}

static UA_INLINE UA_LocalizedText
UA_LOCALIZEDTEXT_ALLOC(const char *locale, const char *text) {
    UA_LocalizedText lt; lt.locale = UA_STRING_ALLOC(locale);
    lt.text = UA_STRING_ALLOC(text); return lt;
}

NumericRange

NumericRanges are used to indicate subsets of a (multidimensional) array. They no official data type in the OPC UA standard and are transmitted only with a string encoding, such as “1:2,0:3,5”. The colon separates min/max index and the comma separates dimensions. A single value indicates a range with a single element (min==max).

typedef struct {
    UA_UInt32 min;
    UA_UInt32 max;
} UA_NumericRangeDimension;

typedef struct  {
    size_t dimensionsSize;
    UA_NumericRangeDimension *dimensions;
} UA_NumericRange;

UA_StatusCode
UA_NumericRange_parse(UA_NumericRange *range, const UA_String str);

static UA_INLINE UA_NumericRange
UA_NUMERICRANGE(const char *s) {
    UA_NumericRange nr; nr.dimensionsSize = 0; nr.dimensions = NULL;
    UA_NumericRange_parse(&nr, UA_STRING((char*)(uintptr_t)s)); return nr;
}

Variant

Variants may contain values of any type together with a description of the content. See the section on Generic Type Handling on how types are described. The standard mandates that variants contain built-in data types only. If the value is not of a builtin type, it is wrapped into an ExtensionObject. open62541 hides this wrapping transparently in the encoding layer. If the data type is unknown to the receiver, the variant contains the original ExtensionObject in binary or XML encoding.

Variants may contain a scalar value or an array. For details on the handling of arrays, see the section on Array handling. Array variants can have an additional dimensionality (matrix, 3-tensor, …) defined in an array of dimension lengths. The actual values are kept in an array of dimensions one. For users who work with higher-dimensions arrays directly, keep in mind that dimensions of higher rank are serialized first (the highest rank dimension has stride 1 and elements follow each other directly). Usually it is simplest to interact with higher-dimensional arrays via UA_NumericRange descriptions (see Array handling).

To differentiate between scalar / array variants, the following definition is used. UA_Variant_isScalar provides simplified access to these checks.

  • arrayLength == 0 && data == NULL: undefined array of length -1

  • arrayLength == 0 && data == UA_EMPTY_ARRAY_SENTINEL: array of length 0

  • arrayLength == 0 && data > UA_EMPTY_ARRAY_SENTINEL: scalar value

  • arrayLength > 0: array of the given length

Variants can also be empty. Then, the pointer to the type description is NULL.

/* Forward declaration. See the section on Generic Type Handling */
struct UA_DataType;
typedef struct UA_DataType UA_DataType;

#define UA_EMPTY_ARRAY_SENTINEL ((void*)0x01)

typedef enum {
    UA_VARIANT_DATA,         /* The data has the same lifecycle as the variant */
    UA_VARIANT_DATA_NODELETE /* The data is "borrowed" by the variant and is
                              * not deleted when the variant is cleared up.
                              * The array dimensions also borrowed. */
} UA_VariantStorageType;

typedef struct {
    const UA_DataType *type;      /* The data type description */
    UA_VariantStorageType storageType;
    size_t arrayLength;           /* The number of elements in the data array */
    void *data;                   /* Points to the scalar or array data */
    size_t arrayDimensionsSize;   /* The number of dimensions */
    UA_UInt32 *arrayDimensions;   /* The length of each dimension */
} UA_Variant;

/* Returns true if the variant has no value defined (contains neither an array
 * nor a scalar value).
 *
 * @param v The variant
 * @return Is the variant empty */
static UA_INLINE UA_Boolean
UA_Variant_isEmpty(const UA_Variant *v) {
    return v->type == NULL;
}

/* Returns true if the variant contains a scalar value. Note that empty variants
 * contain an array of length -1 (undefined).
 *
 * @param v The variant
 * @return Does the variant contain a scalar value */
static UA_INLINE UA_Boolean
UA_Variant_isScalar(const UA_Variant *v) {
    return (v->arrayLength == 0 && v->data > UA_EMPTY_ARRAY_SENTINEL);
}

/* Returns true if the variant contains a scalar value of the given type.
 *
 * @param v The variant
 * @param type The data type
 * @return Does the variant contain a scalar value of the given type */
static UA_INLINE UA_Boolean
UA_Variant_hasScalarType(const UA_Variant *v, const UA_DataType *type) {
    return UA_Variant_isScalar(v) && type == v->type;
}

/* Returns true if the variant contains an array of the given type.
 *
 * @param v The variant
 * @param type The data type
 * @return Does the variant contain an array of the given type */
static UA_INLINE UA_Boolean
UA_Variant_hasArrayType(const UA_Variant *v, const UA_DataType *type) {
    return (!UA_Variant_isScalar(v)) && type == v->type;
}

/* Set the variant to a scalar value that already resides in memory. The value
 * takes on the lifecycle of the variant and is deleted with it.
 *
 * @param v The variant
 * @param p A pointer to the value data
 * @param type The datatype of the value in question */
void
UA_Variant_setScalar(UA_Variant *v, void *p,
                     const UA_DataType *type);

/* Set the variant to a scalar value that is copied from an existing variable.
 * @param v The variant
 * @param p A pointer to the value data
 * @param type The datatype of the value
 * @return Indicates whether the operation succeeded or returns an error code */
UA_StatusCode
UA_Variant_setScalarCopy(UA_Variant *v, const void *p,
                         const UA_DataType *type);

/* Set the variant to an array that already resides in memory. The array takes
 * on the lifecycle of the variant and is deleted with it.
 *
 * @param v The variant
 * @param array A pointer to the array data
 * @param arraySize The size of the array
 * @param type The datatype of the array */
void
UA_Variant_setArray(UA_Variant *v, void *array,
                    size_t arraySize, const UA_DataType *type);

/* Set the variant to an array that is copied from an existing array.
 *
 * @param v The variant
 * @param array A pointer to the array data
 * @param arraySize The size of the array
 * @param type The datatype of the array
 * @return Indicates whether the operation succeeded or returns an error code */
UA_StatusCode
UA_Variant_setArrayCopy(UA_Variant *v, const void *array,
                        size_t arraySize, const UA_DataType *type);

/* Copy the variant, but use only a subset of the (multidimensional) array into
 * a variant. Returns an error code if the variant is not an array or if the
 * indicated range does not fit.
 *
 * @param src The source variant
 * @param dst The target variant
 * @param range The range of the copied data
 * @return Returns UA_STATUSCODE_GOOD or an error code */
UA_StatusCode
UA_Variant_copyRange(const UA_Variant *src, UA_Variant *dst,
                     const UA_NumericRange range);

/* Insert a range of data into an existing variant. The data array cannot be
 * reused afterwards if it contains types without a fixed size (e.g. strings)
 * since the members are moved into the variant and take on its lifecycle.
 *
 * @param v The variant
 * @param dataArray The data array. The type must match the variant
 * @param dataArraySize The length of the data array. This is checked to match
 *        the range size.
 * @param range The range of where the new data is inserted
 * @return Returns UA_STATUSCODE_GOOD or an error code */
UA_StatusCode
UA_Variant_setRange(UA_Variant *v, void *array,
                    size_t arraySize, const UA_NumericRange range);

/* Deep-copy a range of data into an existing variant.
 *
 * @param v The variant
 * @param dataArray The data array. The type must match the variant
 * @param dataArraySize The length of the data array. This is checked to match
 *        the range size.
 * @param range The range of where the new data is inserted
 * @return Returns UA_STATUSCODE_GOOD or an error code */
UA_StatusCode
UA_Variant_setRangeCopy(UA_Variant *v, const void *array,
                        size_t arraySize, const UA_NumericRange range);

ExtensionObject

ExtensionObjects may contain scalars of any data type. Even those that are unknown to the receiver. See the section on Generic Type Handling on how types are described. If the received data type is unknown, the encoded string and target NodeId is stored instead of the decoded value.

typedef enum {
    UA_EXTENSIONOBJECT_ENCODED_NOBODY     = 0,
    UA_EXTENSIONOBJECT_ENCODED_BYTESTRING = 1,
    UA_EXTENSIONOBJECT_ENCODED_XML        = 2,
    UA_EXTENSIONOBJECT_DECODED            = 3,
    UA_EXTENSIONOBJECT_DECODED_NODELETE   = 4 /* Don't delete the content
                                                 together with the
                                                 ExtensionObject */
} UA_ExtensionObjectEncoding;

typedef struct {
    UA_ExtensionObjectEncoding encoding;
    union {
        struct {
            UA_NodeId typeId;   /* The nodeid of the datatype */
            UA_ByteString body; /* The bytestring of the encoded data */
        } encoded;
        struct {
            const UA_DataType *type;
            void *data;
        } decoded;
    } content;
} UA_ExtensionObject;

/* Initialize the ExtensionObject and set the "decoded" value to the given
 * pointer. The value will be deleted when the ExtensionObject is cleared. */
void
UA_ExtensionObject_setValue(UA_ExtensionObject *eo,
                            void *p,
                            const UA_DataType *type);

/* Initialize the ExtensionObject and set the "decoded" value to the given
 * pointer. The value will *not* be deleted when the ExtensionObject is
 * cleared. */
void
UA_ExtensionObject_setValueNoDelete(UA_ExtensionObject *eo,
                                    void *p,
                                    const UA_DataType *type);

/* Initialize the ExtensionObject and set the "decoded" value to a fresh copy of
 * the given value pointer. The value will be deleted when the ExtensionObject
 * is cleared. */
UA_StatusCode
UA_ExtensionObject_setValueCopy(UA_ExtensionObject *eo,
                                void *p,
                                const UA_DataType *type);

DataValue

A data value with an associated status code and timestamps.

typedef struct {
    UA_Variant    value;
    UA_DateTime   sourceTimestamp;
    UA_DateTime   serverTimestamp;
    UA_UInt16     sourcePicoseconds;
    UA_UInt16     serverPicoseconds;
    UA_StatusCode status;
    UA_Boolean    hasValue             : 1;
    UA_Boolean    hasStatus            : 1;
    UA_Boolean    hasSourceTimestamp   : 1;
    UA_Boolean    hasServerTimestamp   : 1;
    UA_Boolean    hasSourcePicoseconds : 1;
    UA_Boolean    hasServerPicoseconds : 1;
} UA_DataValue;

DiagnosticInfo

A structure that contains detailed error and diagnostic information associated with a StatusCode.

typedef struct UA_DiagnosticInfo {
    UA_Boolean    hasSymbolicId          : 1;
    UA_Boolean    hasNamespaceUri        : 1;
    UA_Boolean    hasLocalizedText       : 1;
    UA_Boolean    hasLocale              : 1;
    UA_Boolean    hasAdditionalInfo      : 1;
    UA_Boolean    hasInnerStatusCode     : 1;
    UA_Boolean    hasInnerDiagnosticInfo : 1;
    UA_Int32      symbolicId;
    UA_Int32      namespaceUri;
    UA_Int32      localizedText;
    UA_Int32      locale;
    UA_String     additionalInfo;
    UA_StatusCode innerStatusCode;
    struct UA_DiagnosticInfo *innerDiagnosticInfo;
} UA_DiagnosticInfo;

Generic Type Handling

All information about a (builtin/structured) data type is stored in a UA_DataType. The array UA_TYPES contains the description of all standard-defined types. This type description is used for the following generic operations that work on all types:

  • void T_init(T *ptr): Initialize the data type. This is synonymous with zeroing out the memory, i.e. memset(ptr, 0, sizeof(T)).

  • T* T_new(): Allocate and return the memory for the data type. The value is already initialized.

  • UA_StatusCode T_copy(const T *src, T *dst): Copy the content of the data type. Returns UA_STATUSCODE_GOOD or UA_STATUSCODE_BADOUTOFMEMORY.

  • void T_clear(T *ptr): Delete the dynamically allocated content of the data type and perform a T_init to reset the type.

  • void T_delete(T *ptr): Delete the content of the data type and the memory for the data type itself.

Specializations, such as UA_Int32_new() are derived from the generic type operations as static inline functions.

typedef struct {
#ifdef UA_ENABLE_TYPEDESCRIPTION
    const char *memberName;       /* Human-readable member name */
#endif
    const UA_DataType *memberType;/* The member data type description */
    UA_Byte padding    : 6;       /* How much padding is there before this
                                     member element? For arrays this is the
                                     padding before the size_t length member.
                                     (No padding between size_t and the
                                     following ptr.) For unions, the padding
                                     includes the size of the switchfield (the
                                     offset from the start of the union
                                     type). */
    UA_Byte isArray    : 1;       /* The member is an array */
    UA_Byte isOptional : 1;       /* The member is an optional field */
} UA_DataTypeMember;

/* The DataType "kind" is an internal type classification. It is used to
 * dispatch handling to the correct routines. */
#define UA_DATATYPEKINDS 31
typedef enum {
    UA_DATATYPEKIND_BOOLEAN = 0,
    UA_DATATYPEKIND_SBYTE = 1,
    UA_DATATYPEKIND_BYTE = 2,
    UA_DATATYPEKIND_INT16 = 3,
    UA_DATATYPEKIND_UINT16 = 4,
    UA_DATATYPEKIND_INT32 = 5,
    UA_DATATYPEKIND_UINT32 = 6,
    UA_DATATYPEKIND_INT64 = 7,
    UA_DATATYPEKIND_UINT64 = 8,
    UA_DATATYPEKIND_FLOAT = 9,
    UA_DATATYPEKIND_DOUBLE = 10,
    UA_DATATYPEKIND_STRING = 11,
    UA_DATATYPEKIND_DATETIME = 12,
    UA_DATATYPEKIND_GUID = 13,
    UA_DATATYPEKIND_BYTESTRING = 14,
    UA_DATATYPEKIND_XMLELEMENT = 15,
    UA_DATATYPEKIND_NODEID = 16,
    UA_DATATYPEKIND_EXPANDEDNODEID = 17,
    UA_DATATYPEKIND_STATUSCODE = 18,
    UA_DATATYPEKIND_QUALIFIEDNAME = 19,
    UA_DATATYPEKIND_LOCALIZEDTEXT = 20,
    UA_DATATYPEKIND_EXTENSIONOBJECT = 21,
    UA_DATATYPEKIND_DATAVALUE = 22,
    UA_DATATYPEKIND_VARIANT = 23,
    UA_DATATYPEKIND_DIAGNOSTICINFO = 24,
    UA_DATATYPEKIND_DECIMAL = 25,
    UA_DATATYPEKIND_ENUM = 26,
    UA_DATATYPEKIND_STRUCTURE = 27,
    UA_DATATYPEKIND_OPTSTRUCT = 28, /* struct with optional fields */
    UA_DATATYPEKIND_UNION = 29,
    UA_DATATYPEKIND_BITFIELDCLUSTER = 30 /* bitfields + padding */
} UA_DataTypeKind;

struct UA_DataType {
#ifdef UA_ENABLE_TYPEDESCRIPTION
    const char *typeName;
#endif
    UA_NodeId typeId;           /* The nodeid of the type */
    UA_NodeId binaryEncodingId; /* NodeId of datatype when encoded as binary */
    //UA_NodeId xmlEncodingId;  /* NodeId of datatype when encoded as XML */
    UA_UInt32 memSize     : 16; /* Size of the struct in memory */
    UA_UInt32 typeKind    : 6;  /* Dispatch index for the handling routines */
    UA_UInt32 pointerFree : 1;  /* The type (and its members) contains no
                                 * pointers that need to be freed */
    UA_UInt32 overlayable : 1;  /* The type has the identical memory layout
                                 * in memory and on the binary stream. */
    UA_UInt32 membersSize : 8;  /* How many members does the type have? */
    UA_DataTypeMember *members;
};

/* Datatype arrays with custom type definitions can be added in a linked list to
 * the client or server configuration. */
typedef struct UA_DataTypeArray {
    const struct UA_DataTypeArray *next;
    const size_t typesSize;
    const UA_DataType *types;
} UA_DataTypeArray;

/* Returns the offset and type of a structure member. The return value is false
 * if the member was not found.
 *
 * If the member is an array, the offset points to the (size_t) length field.
 * (The array pointer comes after the length field without any padding.) */
#ifdef UA_ENABLE_TYPEDESCRIPTION
UA_Boolean
UA_DataType_getStructMember(const UA_DataType *type,
                            const char *memberName,
                            size_t *outOffset,
                            const UA_DataType **outMemberType,
                            UA_Boolean *outIsArray);
#endif

/* Test if the data type is a numeric builtin data type (via the typeKind field
 * of UA_DataType). This includes integers and floating point numbers. Not
 * included are Boolean, DateTime, StatusCode and Enums. */
UA_Boolean
UA_DataType_isNumeric(const UA_DataType *type);

/* Return the Data Type Precedence-Rank defined in Part 4.
 * If there is no Precedence-Rank assigned with the type -1 is returned.*/
UA_Int16
UA_DataType_getPrecedence(const UA_DataType *type);

Builtin data types can be accessed as UA_TYPES[UA_TYPES_XXX], where XXX is the name of the data type. If only the NodeId of a type is known, use the following method to retrieve the data type description.

/* Returns the data type description for the type's identifier or NULL if no
 * matching data type was found. */
const UA_DataType *
UA_findDataType(const UA_NodeId *typeId);

The following functions are used for generic handling of data types.

/* Allocates and initializes a variable of type dataType
 *
 * @param type The datatype description
 * @return Returns the memory location of the variable or NULL if no
 *         memory could be allocated */
void * UA_new(const UA_DataType *type);

/* Initializes a variable to default values
 *
 * @param p The memory location of the variable
 * @param type The datatype description */
static UA_INLINE void
UA_init(void *p, const UA_DataType *type) {
    memset(p, 0, type->memSize);
}

/* Copies the content of two variables. If copying fails (e.g. because no memory
 * was available for an array), then dst is emptied and initialized to prevent
 * memory leaks.
 *
 * @param src The memory location of the source variable
 * @param dst The memory location of the destination variable
 * @param type The datatype description
 * @return Indicates whether the operation succeeded or returns an error code */
UA_StatusCode
UA_copy(const void *src, void *dst, const UA_DataType *type);

/* Deletes the dynamically allocated content of a variable (e.g. resets all
 * arrays to undefined arrays). Afterwards, the variable can be safely deleted
 * without causing memory leaks. But the variable is not initialized and may
 * contain old data that is not memory-relevant.
 *
 * @param p The memory location of the variable
 * @param type The datatype description of the variable */
void UA_clear(void *p, const UA_DataType *type);

#define UA_deleteMembers(p, type) UA_clear(p, type)

/* Frees a variable and all of its content.
 *
 * @param p The memory location of the variable
 * @param type The datatype description of the variable */
void UA_delete(void *p, const UA_DataType *type);

/* Pretty-print the value from the datatype.
 *
 * @param p The memory location of the variable
 * @param type The datatype description of the variable
 * @param output A string that is used for the pretty-printed output. If the
 *        memory for string is already allocated, we try to use the existing
 *        string (the length is adjusted). If the string is empty, memory
 *        is allocated for it.
 * @return Indicates whether the operation succeeded*/
#ifdef UA_ENABLE_TYPEDESCRIPTION
UA_StatusCode
UA_print(const void *p, const UA_DataType *type, UA_String *output);
#endif

/* Compare two variables and return their order. This can also be used to test
 * for equality of two values.
 *
 * For numerical types (including StatusCodes and Enums), their natural order is
 * used. NaN is the "smallest" value for floating point values. Different bit
 * representations of NaN are considered identical.
 *
 * All other types have *some* absolute ordering so that a < b, b < c -> a < c.
 *
 * The ordering of arrays (also strings) is in "shortlex": A shorter array is
 * always smaller than a longer array. Otherwise the first different element
 * defines the order.
 *
 * When members of different types are permitted (in Variants and
 * ExtensionObjects), the memory address in the "UA_DataType*" pointer
 * determines which variable is smaller.
 *
 * @param p1 The memory location of the first value
 * @param p2 The memory location of the first value
 * @param type The datatype description of both values */
UA_Order
UA_order(const void *p1, const void *p2, const UA_DataType *type);

Encoding/Decoding

Encoding and decoding routines for the available formats. For all formats the _calcSize, _encode and _decode methods are provided.

/* Returns the number of bytes the value p takes in binary encoding. Returns
 * zero if an error occurs. */
size_t
UA_calcSizeBinary(const void *p, const UA_DataType *type);

/* Encodes a data-structure in the binary format. If outBuf has a length of
 * zero, a buffer of the required size is allocated. Otherwise, encoding into
 * the existing outBuf is attempted (and may fail if the buffer is too
 * small). */
UA_StatusCode
UA_encodeBinary(const void *p, const UA_DataType *type,
                UA_ByteString *outBuf);

/* The structure with the decoding options may be extended in the future.
 * Zero-out the entire structure initially to ensure code-compatibility when
 * more fields are added in a later release. */
typedef struct {
    const UA_DataTypeArray *customTypes; /* Begin of a linked list with custom
                                          * datatype definitions */
} UA_DecodeBinaryOptions;

/* Decodes a data structure from the input buffer in the binary format. It is
 * assumed that `p` points to valid memory (not necessarily zeroed out). The
 * options can be NULL and will be disregarded in that case. */
UA_StatusCode
UA_decodeBinary(const UA_ByteString *inBuf,
                void *p, const UA_DataType *type,
                const UA_DecodeBinaryOptions *options);

#ifdef UA_ENABLE_JSON_ENCODING

typedef struct {
    const UA_String *namespaces;
    size_t namespacesSize;
    const UA_String *serverUris;
    size_t serverUrisSize;
    UA_Boolean useReversible;
} UA_EncodeJsonOptions;

/* Returns the number of bytes the value src takes in json encoding. Returns
 * zero if an error occurs. */
size_t
UA_calcSizeJson(const void *src, const UA_DataType *type,
                const UA_EncodeJsonOptions *options);

/* Encodes the scalar value described by type to json encoding.
 *
 * @param src The value. Must not be NULL.
 * @param type The value type. Must not be NULL.
 * @param outBuf Pointer to ByteString containing the result if the encoding
 *        was successful
 * @return Returns a statuscode whether encoding succeeded. */
UA_StatusCode
UA_encodeJson(const void *src, const UA_DataType *type, UA_ByteString *outBuf,
              const UA_EncodeJsonOptions *options);

/* The structure with the decoding options may be extended in the future.
 * Zero-out the entire structure initially to ensure code-compatibility when
 * more fields are added in a later release. */
typedef struct {
    const UA_String *namespaces;
    size_t namespacesSize;
    const UA_String *serverUris;
    size_t serverUrisSize;
    const UA_DataTypeArray *customTypes; /* Begin of a linked list with custom
                                          * datatype definitions */
} UA_DecodeJsonOptions;

/* Decodes a scalar value described by type from json encoding.
 *
 * @param src The buffer with the json encoded value. Must not be NULL.
 * @param dst The target value. Must not be NULL. The target is assumed to have
 *        size type->memSize. The value is reset to zero before decoding. If
 *        decoding fails, members are deleted and the value is reset (zeroed)
 *        again.
 * @param type The value type. Must not be NULL.
 * @param options The options struct for decoding, currently unused
 * @return Returns a statuscode whether decoding succeeded. */
UA_StatusCode
UA_decodeJson(const UA_ByteString *src, void *dst, const UA_DataType *type,
              const UA_DecodeJsonOptions *options);

#endif /* UA_ENABLE_JSON_ENCODING */

Array handling

In OPC UA, arrays can have a length of zero or more with the usual meaning. In addition, arrays can be undefined. Then, they don’t even have a length. In the binary encoding, this is indicated by an array of length -1.

In open62541 however, we use size_t for array lengths. An undefined array has length 0 and the data pointer is NULL. An array of length 0 also has length 0 but a data pointer UA_EMPTY_ARRAY_SENTINEL.

/* Allocates and initializes an array of variables of a specific type
 *
 * @param size The requested array length
 * @param type The datatype description
 * @return Returns the memory location of the variable or NULL if no memory
 *         could be allocated */
void *
UA_Array_new(size_t size, const UA_DataType *type);

/* Allocates and copies an array
 *
 * @param src The memory location of the source array
 * @param size The size of the array
 * @param dst The location of the pointer to the new array
 * @param type The datatype of the array members
 * @return Returns UA_STATUSCODE_GOOD or UA_STATUSCODE_BADOUTOFMEMORY */
UA_StatusCode
UA_Array_copy(const void *src, size_t size, void **dst,
              const UA_DataType *type);

/* Resizes (and reallocates) an array. The last entries are initialized to zero
 * if the array length is increased. If the array length is decreased, the last
 * entries are removed if the size is decreased.
 *
 * @param p Double pointer to the array memory. Can be overwritten by the result
 *          of a realloc.
 * @param size The current size of the array. Overwritten in case of success.
 * @param newSize The new size of the array
 * @param type The datatype of the array members
 * @return Returns UA_STATUSCODE_GOOD or UA_STATUSCODE_BADOUTOFMEMORY. The
 *         original array is left untouched in the failure case. */
UA_StatusCode
UA_Array_resize(void **p, size_t *size, size_t newSize,
                const UA_DataType *type);

/* Append the given element at the end of the array. The content is moved
 * (shallow copy) and the original memory is _init'ed if appending is
 * successful.
 *
 * @param p Double pointer to the array memory. Can be overwritten by the result
 *          of a realloc.
 * @param size The current size of the array. Overwritten in case of success.
 * @param newElem The element to be appended. The memory is reset upon success.
 * @param type The datatype of the array members
 * @return Returns UA_STATUSCODE_GOOD or UA_STATUSCODE_BADOUTOFMEMORY. The
 *         original array is left untouched in the failure case. */
UA_StatusCode
UA_Array_append(void **p, size_t *size, void *newElem,
                const UA_DataType *type);

/* Append a copy of the given element at the end of the array.
 *
 * @param p Double pointer to the array memory. Can be overwritten by the result
 *          of a realloc.
 * @param size The current size of the array. Overwritten in case of success.
 * @param newElem The element to be appended.
 * @param type The datatype of the array members
 * @return Returns UA_STATUSCODE_GOOD or UA_STATUSCODE_BADOUTOFMEMORY. The
 *         original array is left untouched in the failure case. */

UA_StatusCode
UA_Array_appendCopy(void **p, size_t *size, const void *newElem,
                    const UA_DataType *type);

/* Deletes an array.
 *
 * @param p The memory location of the array
 * @param size The size of the array
 * @param type The datatype of the array members */
void
UA_Array_delete(void *p, size_t size, const UA_DataType *type);

Random Number Generator

If UA_MULTITHREADING is defined, then the seed is stored in thread local storage. The seed is initialized for every thread in the server/client.

void UA_random_seed(UA_UInt64 seed);
UA_UInt32 UA_UInt32_random(void); /* no cryptographic entropy */
UA_Guid UA_Guid_random(void);     /* no cryptographic entropy */

Generated Data Type Definitions

The following data types were auto-generated from a definition in XML format.

/* The following is used to exclude type names in the definition of UA_DataType
 * structures if the feature is disabled. */
#ifdef UA_ENABLE_TYPEDESCRIPTION
# define UA_TYPENAME(name) name,
#else
# define UA_TYPENAME(name)
#endif

Every type is assigned an index in an array containing the type descriptions. These descriptions are used during type handling (copying, deletion, binary encoding, …).

#define UA_TYPES_COUNT 191
extern const UA_DataType UA_TYPES[UA_TYPES_COUNT];

Boolean

#define UA_TYPES_BOOLEAN 0

SByte

#define UA_TYPES_SBYTE 1

Byte

#define UA_TYPES_BYTE 2

Int16

#define UA_TYPES_INT16 3

UInt16

#define UA_TYPES_UINT16 4

Int32

#define UA_TYPES_INT32 5

UInt32

#define UA_TYPES_UINT32 6

Int64

#define UA_TYPES_INT64 7

UInt64

#define UA_TYPES_UINT64 8

Float

#define UA_TYPES_FLOAT 9

Double

#define UA_TYPES_DOUBLE 10

String

#define UA_TYPES_STRING 11

DateTime

#define UA_TYPES_DATETIME 12

Guid

#define UA_TYPES_GUID 13

ByteString

#define UA_TYPES_BYTESTRING 14

XmlElement

#define UA_TYPES_XMLELEMENT 15

NodeId

#define UA_TYPES_NODEID 16

ExpandedNodeId

#define UA_TYPES_EXPANDEDNODEID 17

StatusCode

#define UA_TYPES_STATUSCODE 18

QualifiedName

#define UA_TYPES_QUALIFIEDNAME 19

LocalizedText

#define UA_TYPES_LOCALIZEDTEXT 20

ExtensionObject

#define UA_TYPES_EXTENSIONOBJECT 21

DataValue

#define UA_TYPES_DATAVALUE 22

Variant

#define UA_TYPES_VARIANT 23

DiagnosticInfo

#define UA_TYPES_DIAGNOSTICINFO 24

KeyValuePair

typedef struct {
    UA_QualifiedName key;
    UA_Variant value;
} UA_KeyValuePair;

#define UA_TYPES_KEYVALUEPAIR 25

NodeClass

typedef enum {
    UA_NODECLASS_UNSPECIFIED = 0,
    UA_NODECLASS_OBJECT = 1,
    UA_NODECLASS_VARIABLE = 2,
    UA_NODECLASS_METHOD = 4,
    UA_NODECLASS_OBJECTTYPE = 8,
    UA_NODECLASS_VARIABLETYPE = 16,
    UA_NODECLASS_REFERENCETYPE = 32,
    UA_NODECLASS_DATATYPE = 64,
    UA_NODECLASS_VIEW = 128,
    __UA_NODECLASS_FORCE32BIT = 0x7fffffff
} UA_NodeClass;
UA_STATIC_ASSERT(sizeof(UA_NodeClass) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_NODECLASS 26

StructureType

typedef enum {
    UA_STRUCTURETYPE_STRUCTURE = 0,
    UA_STRUCTURETYPE_STRUCTUREWITHOPTIONALFIELDS = 1,
    UA_STRUCTURETYPE_UNION = 2,
    UA_STRUCTURETYPE_STRUCTUREWITHSUBTYPEDVALUES = 3,
    UA_STRUCTURETYPE_UNIONWITHSUBTYPEDVALUES = 4,
    __UA_STRUCTURETYPE_FORCE32BIT = 0x7fffffff
} UA_StructureType;
UA_STATIC_ASSERT(sizeof(UA_StructureType) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_STRUCTURETYPE 27

StructureField

typedef struct {
    UA_String name;
    UA_LocalizedText description;
    UA_NodeId dataType;
    UA_Int32 valueRank;
    size_t arrayDimensionsSize;
    UA_UInt32 *arrayDimensions;
    UA_UInt32 maxStringLength;
    UA_Boolean isOptional;
} UA_StructureField;

#define UA_TYPES_STRUCTUREFIELD 28

StructureDefinition

typedef struct {
    UA_NodeId defaultEncodingId;
    UA_NodeId baseDataType;
    UA_StructureType structureType;
    size_t fieldsSize;
    UA_StructureField *fields;
} UA_StructureDefinition;

#define UA_TYPES_STRUCTUREDEFINITION 29

Argument

typedef struct {
    UA_String name;
    UA_NodeId dataType;
    UA_Int32 valueRank;
    size_t arrayDimensionsSize;
    UA_UInt32 *arrayDimensions;
    UA_LocalizedText description;
} UA_Argument;

#define UA_TYPES_ARGUMENT 30

EnumValueType

typedef struct {
    UA_Int64 value;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
} UA_EnumValueType;

#define UA_TYPES_ENUMVALUETYPE 31

EnumField

typedef struct {
    UA_Int64 value;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_String name;
} UA_EnumField;

#define UA_TYPES_ENUMFIELD 32

Duration

typedef UA_Double UA_Duration;

#define UA_TYPES_DURATION 33

UtcTime

typedef UA_DateTime UA_UtcTime;

#define UA_TYPES_UTCTIME 34

LocaleId

typedef UA_String UA_LocaleId;

#define UA_TYPES_LOCALEID 35

TimeZoneDataType

typedef struct {
    UA_Int16 offset;
    UA_Boolean daylightSavingInOffset;
} UA_TimeZoneDataType;

#define UA_TYPES_TIMEZONEDATATYPE 36

ApplicationType

typedef enum {
    UA_APPLICATIONTYPE_SERVER = 0,
    UA_APPLICATIONTYPE_CLIENT = 1,
    UA_APPLICATIONTYPE_CLIENTANDSERVER = 2,
    UA_APPLICATIONTYPE_DISCOVERYSERVER = 3,
    __UA_APPLICATIONTYPE_FORCE32BIT = 0x7fffffff
} UA_ApplicationType;
UA_STATIC_ASSERT(sizeof(UA_ApplicationType) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_APPLICATIONTYPE 37

ApplicationDescription

typedef struct {
    UA_String applicationUri;
    UA_String productUri;
    UA_LocalizedText applicationName;
    UA_ApplicationType applicationType;
    UA_String gatewayServerUri;
    UA_String discoveryProfileUri;
    size_t discoveryUrlsSize;
    UA_String *discoveryUrls;
} UA_ApplicationDescription;

#define UA_TYPES_APPLICATIONDESCRIPTION 38

RequestHeader

typedef struct {
    UA_NodeId authenticationToken;
    UA_DateTime timestamp;
    UA_UInt32 requestHandle;
    UA_UInt32 returnDiagnostics;
    UA_String auditEntryId;
    UA_UInt32 timeoutHint;
    UA_ExtensionObject additionalHeader;
} UA_RequestHeader;

#define UA_TYPES_REQUESTHEADER 39

ResponseHeader

typedef struct {
    UA_DateTime timestamp;
    UA_UInt32 requestHandle;
    UA_StatusCode serviceResult;
    UA_DiagnosticInfo serviceDiagnostics;
    size_t stringTableSize;
    UA_String *stringTable;
    UA_ExtensionObject additionalHeader;
} UA_ResponseHeader;

#define UA_TYPES_RESPONSEHEADER 40

ServiceFault

typedef struct {
    UA_ResponseHeader responseHeader;
} UA_ServiceFault;

#define UA_TYPES_SERVICEFAULT 41

FindServersRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_String endpointUrl;
    size_t localeIdsSize;
    UA_String *localeIds;
    size_t serverUrisSize;
    UA_String *serverUris;
} UA_FindServersRequest;

#define UA_TYPES_FINDSERVERSREQUEST 42

FindServersResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t serversSize;
    UA_ApplicationDescription *servers;
} UA_FindServersResponse;

#define UA_TYPES_FINDSERVERSRESPONSE 43

MessageSecurityMode

typedef enum {
    UA_MESSAGESECURITYMODE_INVALID = 0,
    UA_MESSAGESECURITYMODE_NONE = 1,
    UA_MESSAGESECURITYMODE_SIGN = 2,
    UA_MESSAGESECURITYMODE_SIGNANDENCRYPT = 3,
    __UA_MESSAGESECURITYMODE_FORCE32BIT = 0x7fffffff
} UA_MessageSecurityMode;
UA_STATIC_ASSERT(sizeof(UA_MessageSecurityMode) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_MESSAGESECURITYMODE 44

UserTokenType

typedef enum {
    UA_USERTOKENTYPE_ANONYMOUS = 0,
    UA_USERTOKENTYPE_USERNAME = 1,
    UA_USERTOKENTYPE_CERTIFICATE = 2,
    UA_USERTOKENTYPE_ISSUEDTOKEN = 3,
    __UA_USERTOKENTYPE_FORCE32BIT = 0x7fffffff
} UA_UserTokenType;
UA_STATIC_ASSERT(sizeof(UA_UserTokenType) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_USERTOKENTYPE 45

UserTokenPolicy

typedef struct {
    UA_String policyId;
    UA_UserTokenType tokenType;
    UA_String issuedTokenType;
    UA_String issuerEndpointUrl;
    UA_String securityPolicyUri;
} UA_UserTokenPolicy;

#define UA_TYPES_USERTOKENPOLICY 46

EndpointDescription

typedef struct {
    UA_String endpointUrl;
    UA_ApplicationDescription server;
    UA_ByteString serverCertificate;
    UA_MessageSecurityMode securityMode;
    UA_String securityPolicyUri;
    size_t userIdentityTokensSize;
    UA_UserTokenPolicy *userIdentityTokens;
    UA_String transportProfileUri;
    UA_Byte securityLevel;
} UA_EndpointDescription;

#define UA_TYPES_ENDPOINTDESCRIPTION 47

GetEndpointsRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_String endpointUrl;
    size_t localeIdsSize;
    UA_String *localeIds;
    size_t profileUrisSize;
    UA_String *profileUris;
} UA_GetEndpointsRequest;

#define UA_TYPES_GETENDPOINTSREQUEST 48

GetEndpointsResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t endpointsSize;
    UA_EndpointDescription *endpoints;
} UA_GetEndpointsResponse;

#define UA_TYPES_GETENDPOINTSRESPONSE 49

SecurityTokenRequestType

typedef enum {
    UA_SECURITYTOKENREQUESTTYPE_ISSUE = 0,
    UA_SECURITYTOKENREQUESTTYPE_RENEW = 1,
    __UA_SECURITYTOKENREQUESTTYPE_FORCE32BIT = 0x7fffffff
} UA_SecurityTokenRequestType;
UA_STATIC_ASSERT(sizeof(UA_SecurityTokenRequestType) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_SECURITYTOKENREQUESTTYPE 50

ChannelSecurityToken

typedef struct {
    UA_UInt32 channelId;
    UA_UInt32 tokenId;
    UA_DateTime createdAt;
    UA_UInt32 revisedLifetime;
} UA_ChannelSecurityToken;

#define UA_TYPES_CHANNELSECURITYTOKEN 51

OpenSecureChannelRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 clientProtocolVersion;
    UA_SecurityTokenRequestType requestType;
    UA_MessageSecurityMode securityMode;
    UA_ByteString clientNonce;
    UA_UInt32 requestedLifetime;
} UA_OpenSecureChannelRequest;

#define UA_TYPES_OPENSECURECHANNELREQUEST 52

OpenSecureChannelResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    UA_UInt32 serverProtocolVersion;
    UA_ChannelSecurityToken securityToken;
    UA_ByteString serverNonce;
} UA_OpenSecureChannelResponse;

#define UA_TYPES_OPENSECURECHANNELRESPONSE 53

CloseSecureChannelRequest

typedef struct {
    UA_RequestHeader requestHeader;
} UA_CloseSecureChannelRequest;

#define UA_TYPES_CLOSESECURECHANNELREQUEST 54

CloseSecureChannelResponse

typedef struct {
    UA_ResponseHeader responseHeader;
} UA_CloseSecureChannelResponse;

#define UA_TYPES_CLOSESECURECHANNELRESPONSE 55

SignedSoftwareCertificate

typedef struct {
    UA_ByteString certificateData;
    UA_ByteString signature;
} UA_SignedSoftwareCertificate;

#define UA_TYPES_SIGNEDSOFTWARECERTIFICATE 56

SignatureData

typedef struct {
    UA_String algorithm;
    UA_ByteString signature;
} UA_SignatureData;

#define UA_TYPES_SIGNATUREDATA 57

CreateSessionRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_ApplicationDescription clientDescription;
    UA_String serverUri;
    UA_String endpointUrl;
    UA_String sessionName;
    UA_ByteString clientNonce;
    UA_ByteString clientCertificate;
    UA_Double requestedSessionTimeout;
    UA_UInt32 maxResponseMessageSize;
} UA_CreateSessionRequest;

#define UA_TYPES_CREATESESSIONREQUEST 58

CreateSessionResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    UA_NodeId sessionId;
    UA_NodeId authenticationToken;
    UA_Double revisedSessionTimeout;
    UA_ByteString serverNonce;
    UA_ByteString serverCertificate;
    size_t serverEndpointsSize;
    UA_EndpointDescription *serverEndpoints;
    size_t serverSoftwareCertificatesSize;
    UA_SignedSoftwareCertificate *serverSoftwareCertificates;
    UA_SignatureData serverSignature;
    UA_UInt32 maxRequestMessageSize;
} UA_CreateSessionResponse;

#define UA_TYPES_CREATESESSIONRESPONSE 59

UserIdentityToken

typedef struct {
    UA_String policyId;
} UA_UserIdentityToken;

#define UA_TYPES_USERIDENTITYTOKEN 60

AnonymousIdentityToken

typedef struct {
    UA_String policyId;
} UA_AnonymousIdentityToken;

#define UA_TYPES_ANONYMOUSIDENTITYTOKEN 61

UserNameIdentityToken

typedef struct {
    UA_String policyId;
    UA_String userName;
    UA_ByteString password;
    UA_String encryptionAlgorithm;
} UA_UserNameIdentityToken;

#define UA_TYPES_USERNAMEIDENTITYTOKEN 62

X509IdentityToken

typedef struct {
    UA_String policyId;
    UA_ByteString certificateData;
} UA_X509IdentityToken;

#define UA_TYPES_X509IDENTITYTOKEN 63

IssuedIdentityToken

typedef struct {
    UA_String policyId;
    UA_ByteString tokenData;
    UA_String encryptionAlgorithm;
} UA_IssuedIdentityToken;

#define UA_TYPES_ISSUEDIDENTITYTOKEN 64

ActivateSessionRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_SignatureData clientSignature;
    size_t clientSoftwareCertificatesSize;
    UA_SignedSoftwareCertificate *clientSoftwareCertificates;
    size_t localeIdsSize;
    UA_String *localeIds;
    UA_ExtensionObject userIdentityToken;
    UA_SignatureData userTokenSignature;
} UA_ActivateSessionRequest;

#define UA_TYPES_ACTIVATESESSIONREQUEST 65

ActivateSessionResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    UA_ByteString serverNonce;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_ActivateSessionResponse;

#define UA_TYPES_ACTIVATESESSIONRESPONSE 66

CloseSessionRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_Boolean deleteSubscriptions;
} UA_CloseSessionRequest;

#define UA_TYPES_CLOSESESSIONREQUEST 67

CloseSessionResponse

typedef struct {
    UA_ResponseHeader responseHeader;
} UA_CloseSessionResponse;

#define UA_TYPES_CLOSESESSIONRESPONSE 68

NodeAttributesMask

typedef enum {
    UA_NODEATTRIBUTESMASK_NONE = 0,
    UA_NODEATTRIBUTESMASK_ACCESSLEVEL = 1,
    UA_NODEATTRIBUTESMASK_ARRAYDIMENSIONS = 2,
    UA_NODEATTRIBUTESMASK_BROWSENAME = 4,
    UA_NODEATTRIBUTESMASK_CONTAINSNOLOOPS = 8,
    UA_NODEATTRIBUTESMASK_DATATYPE = 16,
    UA_NODEATTRIBUTESMASK_DESCRIPTION = 32,
    UA_NODEATTRIBUTESMASK_DISPLAYNAME = 64,
    UA_NODEATTRIBUTESMASK_EVENTNOTIFIER = 128,
    UA_NODEATTRIBUTESMASK_EXECUTABLE = 256,
    UA_NODEATTRIBUTESMASK_HISTORIZING = 512,
    UA_NODEATTRIBUTESMASK_INVERSENAME = 1024,
    UA_NODEATTRIBUTESMASK_ISABSTRACT = 2048,
    UA_NODEATTRIBUTESMASK_MINIMUMSAMPLINGINTERVAL = 4096,
    UA_NODEATTRIBUTESMASK_NODECLASS = 8192,
    UA_NODEATTRIBUTESMASK_NODEID = 16384,
    UA_NODEATTRIBUTESMASK_SYMMETRIC = 32768,
    UA_NODEATTRIBUTESMASK_USERACCESSLEVEL = 65536,
    UA_NODEATTRIBUTESMASK_USEREXECUTABLE = 131072,
    UA_NODEATTRIBUTESMASK_USERWRITEMASK = 262144,
    UA_NODEATTRIBUTESMASK_VALUERANK = 524288,
    UA_NODEATTRIBUTESMASK_WRITEMASK = 1048576,
    UA_NODEATTRIBUTESMASK_VALUE = 2097152,
    UA_NODEATTRIBUTESMASK_DATATYPEDEFINITION = 4194304,
    UA_NODEATTRIBUTESMASK_ROLEPERMISSIONS = 8388608,
    UA_NODEATTRIBUTESMASK_ACCESSRESTRICTIONS = 16777216,
    UA_NODEATTRIBUTESMASK_ALL = 33554431,
    UA_NODEATTRIBUTESMASK_BASENODE = 26501220,
    UA_NODEATTRIBUTESMASK_OBJECT = 26501348,
    UA_NODEATTRIBUTESMASK_OBJECTTYPE = 26503268,
    UA_NODEATTRIBUTESMASK_VARIABLE = 26571383,
    UA_NODEATTRIBUTESMASK_VARIABLETYPE = 28600438,
    UA_NODEATTRIBUTESMASK_METHOD = 26632548,
    UA_NODEATTRIBUTESMASK_REFERENCETYPE = 26537060,
    UA_NODEATTRIBUTESMASK_VIEW = 26501356,
    __UA_NODEATTRIBUTESMASK_FORCE32BIT = 0x7fffffff
} UA_NodeAttributesMask;
UA_STATIC_ASSERT(sizeof(UA_NodeAttributesMask) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_NODEATTRIBUTESMASK 69

NodeAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
} UA_NodeAttributes;

#define UA_TYPES_NODEATTRIBUTES 70

ObjectAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Byte eventNotifier;
} UA_ObjectAttributes;

#define UA_TYPES_OBJECTATTRIBUTES 71

VariableAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Variant value;
    UA_NodeId dataType;
    UA_Int32 valueRank;
    size_t arrayDimensionsSize;
    UA_UInt32 *arrayDimensions;
    UA_Byte accessLevel;
    UA_Byte userAccessLevel;
    UA_Double minimumSamplingInterval;
    UA_Boolean historizing;
} UA_VariableAttributes;

#define UA_TYPES_VARIABLEATTRIBUTES 72

MethodAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Boolean executable;
    UA_Boolean userExecutable;
} UA_MethodAttributes;

#define UA_TYPES_METHODATTRIBUTES 73

ObjectTypeAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Boolean isAbstract;
} UA_ObjectTypeAttributes;

#define UA_TYPES_OBJECTTYPEATTRIBUTES 74

VariableTypeAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Variant value;
    UA_NodeId dataType;
    UA_Int32 valueRank;
    size_t arrayDimensionsSize;
    UA_UInt32 *arrayDimensions;
    UA_Boolean isAbstract;
} UA_VariableTypeAttributes;

#define UA_TYPES_VARIABLETYPEATTRIBUTES 75

ReferenceTypeAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Boolean isAbstract;
    UA_Boolean symmetric;
    UA_LocalizedText inverseName;
} UA_ReferenceTypeAttributes;

#define UA_TYPES_REFERENCETYPEATTRIBUTES 76

DataTypeAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Boolean isAbstract;
} UA_DataTypeAttributes;

#define UA_TYPES_DATATYPEATTRIBUTES 77

ViewAttributes

typedef struct {
    UA_UInt32 specifiedAttributes;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
    UA_UInt32 writeMask;
    UA_UInt32 userWriteMask;
    UA_Boolean containsNoLoops;
    UA_Byte eventNotifier;
} UA_ViewAttributes;

#define UA_TYPES_VIEWATTRIBUTES 78

AddNodesItem

typedef struct {
    UA_ExpandedNodeId parentNodeId;
    UA_NodeId referenceTypeId;
    UA_ExpandedNodeId requestedNewNodeId;
    UA_QualifiedName browseName;
    UA_NodeClass nodeClass;
    UA_ExtensionObject nodeAttributes;
    UA_ExpandedNodeId typeDefinition;
} UA_AddNodesItem;

#define UA_TYPES_ADDNODESITEM 79

AddNodesResult

typedef struct {
    UA_StatusCode statusCode;
    UA_NodeId addedNodeId;
} UA_AddNodesResult;

#define UA_TYPES_ADDNODESRESULT 80

AddNodesRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t nodesToAddSize;
    UA_AddNodesItem *nodesToAdd;
} UA_AddNodesRequest;

#define UA_TYPES_ADDNODESREQUEST 81

AddNodesResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_AddNodesResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_AddNodesResponse;

#define UA_TYPES_ADDNODESRESPONSE 82

AddReferencesItem

typedef struct {
    UA_NodeId sourceNodeId;
    UA_NodeId referenceTypeId;
    UA_Boolean isForward;
    UA_String targetServerUri;
    UA_ExpandedNodeId targetNodeId;
    UA_NodeClass targetNodeClass;
} UA_AddReferencesItem;

#define UA_TYPES_ADDREFERENCESITEM 83

AddReferencesRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t referencesToAddSize;
    UA_AddReferencesItem *referencesToAdd;
} UA_AddReferencesRequest;

#define UA_TYPES_ADDREFERENCESREQUEST 84

AddReferencesResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_AddReferencesResponse;

#define UA_TYPES_ADDREFERENCESRESPONSE 85

DeleteNodesItem

typedef struct {
    UA_NodeId nodeId;
    UA_Boolean deleteTargetReferences;
} UA_DeleteNodesItem;

#define UA_TYPES_DELETENODESITEM 86

DeleteNodesRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t nodesToDeleteSize;
    UA_DeleteNodesItem *nodesToDelete;
} UA_DeleteNodesRequest;

#define UA_TYPES_DELETENODESREQUEST 87

DeleteNodesResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_DeleteNodesResponse;

#define UA_TYPES_DELETENODESRESPONSE 88

DeleteReferencesItem

typedef struct {
    UA_NodeId sourceNodeId;
    UA_NodeId referenceTypeId;
    UA_Boolean isForward;
    UA_ExpandedNodeId targetNodeId;
    UA_Boolean deleteBidirectional;
} UA_DeleteReferencesItem;

#define UA_TYPES_DELETEREFERENCESITEM 89

DeleteReferencesRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t referencesToDeleteSize;
    UA_DeleteReferencesItem *referencesToDelete;
} UA_DeleteReferencesRequest;

#define UA_TYPES_DELETEREFERENCESREQUEST 90

DeleteReferencesResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_DeleteReferencesResponse;

#define UA_TYPES_DELETEREFERENCESRESPONSE 91

BrowseDirection

typedef enum {
    UA_BROWSEDIRECTION_FORWARD = 0,
    UA_BROWSEDIRECTION_INVERSE = 1,
    UA_BROWSEDIRECTION_BOTH = 2,
    UA_BROWSEDIRECTION_INVALID = 3,
    __UA_BROWSEDIRECTION_FORCE32BIT = 0x7fffffff
} UA_BrowseDirection;
UA_STATIC_ASSERT(sizeof(UA_BrowseDirection) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_BROWSEDIRECTION 92

ViewDescription

typedef struct {
    UA_NodeId viewId;
    UA_DateTime timestamp;
    UA_UInt32 viewVersion;
} UA_ViewDescription;

#define UA_TYPES_VIEWDESCRIPTION 93

BrowseDescription

typedef struct {
    UA_NodeId nodeId;
    UA_BrowseDirection browseDirection;
    UA_NodeId referenceTypeId;
    UA_Boolean includeSubtypes;
    UA_UInt32 nodeClassMask;
    UA_UInt32 resultMask;
} UA_BrowseDescription;

#define UA_TYPES_BROWSEDESCRIPTION 94

BrowseResultMask

typedef enum {
    UA_BROWSERESULTMASK_NONE = 0,
    UA_BROWSERESULTMASK_REFERENCETYPEID = 1,
    UA_BROWSERESULTMASK_ISFORWARD = 2,
    UA_BROWSERESULTMASK_NODECLASS = 4,
    UA_BROWSERESULTMASK_BROWSENAME = 8,
    UA_BROWSERESULTMASK_DISPLAYNAME = 16,
    UA_BROWSERESULTMASK_TYPEDEFINITION = 32,
    UA_BROWSERESULTMASK_ALL = 63,
    UA_BROWSERESULTMASK_REFERENCETYPEINFO = 3,
    UA_BROWSERESULTMASK_TARGETINFO = 60,
    __UA_BROWSERESULTMASK_FORCE32BIT = 0x7fffffff
} UA_BrowseResultMask;
UA_STATIC_ASSERT(sizeof(UA_BrowseResultMask) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_BROWSERESULTMASK 95

ReferenceDescription

typedef struct {
    UA_NodeId referenceTypeId;
    UA_Boolean isForward;
    UA_ExpandedNodeId nodeId;
    UA_QualifiedName browseName;
    UA_LocalizedText displayName;
    UA_NodeClass nodeClass;
    UA_ExpandedNodeId typeDefinition;
} UA_ReferenceDescription;

#define UA_TYPES_REFERENCEDESCRIPTION 96

BrowseResult

typedef struct {
    UA_StatusCode statusCode;
    UA_ByteString continuationPoint;
    size_t referencesSize;
    UA_ReferenceDescription *references;
} UA_BrowseResult;

#define UA_TYPES_BROWSERESULT 97

BrowseRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_ViewDescription view;
    UA_UInt32 requestedMaxReferencesPerNode;
    size_t nodesToBrowseSize;
    UA_BrowseDescription *nodesToBrowse;
} UA_BrowseRequest;

#define UA_TYPES_BROWSEREQUEST 98

BrowseResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_BrowseResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_BrowseResponse;

#define UA_TYPES_BROWSERESPONSE 99

BrowseNextRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_Boolean releaseContinuationPoints;
    size_t continuationPointsSize;
    UA_ByteString *continuationPoints;
} UA_BrowseNextRequest;

#define UA_TYPES_BROWSENEXTREQUEST 100

BrowseNextResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_BrowseResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_BrowseNextResponse;

#define UA_TYPES_BROWSENEXTRESPONSE 101

RelativePathElement

typedef struct {
    UA_NodeId referenceTypeId;
    UA_Boolean isInverse;
    UA_Boolean includeSubtypes;
    UA_QualifiedName targetName;
} UA_RelativePathElement;

#define UA_TYPES_RELATIVEPATHELEMENT 102

RelativePath

typedef struct {
    size_t elementsSize;
    UA_RelativePathElement *elements;
} UA_RelativePath;

#define UA_TYPES_RELATIVEPATH 103

BrowsePath

typedef struct {
    UA_NodeId startingNode;
    UA_RelativePath relativePath;
} UA_BrowsePath;

#define UA_TYPES_BROWSEPATH 104

BrowsePathTarget

typedef struct {
    UA_ExpandedNodeId targetId;
    UA_UInt32 remainingPathIndex;
} UA_BrowsePathTarget;

#define UA_TYPES_BROWSEPATHTARGET 105

BrowsePathResult

typedef struct {
    UA_StatusCode statusCode;
    size_t targetsSize;
    UA_BrowsePathTarget *targets;
} UA_BrowsePathResult;

#define UA_TYPES_BROWSEPATHRESULT 106

TranslateBrowsePathsToNodeIdsRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t browsePathsSize;
    UA_BrowsePath *browsePaths;
} UA_TranslateBrowsePathsToNodeIdsRequest;

#define UA_TYPES_TRANSLATEBROWSEPATHSTONODEIDSREQUEST 107

TranslateBrowsePathsToNodeIdsResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_BrowsePathResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_TranslateBrowsePathsToNodeIdsResponse;

#define UA_TYPES_TRANSLATEBROWSEPATHSTONODEIDSRESPONSE 108

RegisterNodesRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t nodesToRegisterSize;
    UA_NodeId *nodesToRegister;
} UA_RegisterNodesRequest;

#define UA_TYPES_REGISTERNODESREQUEST 109

RegisterNodesResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t registeredNodeIdsSize;
    UA_NodeId *registeredNodeIds;
} UA_RegisterNodesResponse;

#define UA_TYPES_REGISTERNODESRESPONSE 110

UnregisterNodesRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t nodesToUnregisterSize;
    UA_NodeId *nodesToUnregister;
} UA_UnregisterNodesRequest;

#define UA_TYPES_UNREGISTERNODESREQUEST 111

UnregisterNodesResponse

typedef struct {
    UA_ResponseHeader responseHeader;
} UA_UnregisterNodesResponse;

#define UA_TYPES_UNREGISTERNODESRESPONSE 112

FilterOperator

typedef enum {
    UA_FILTEROPERATOR_EQUALS = 0,
    UA_FILTEROPERATOR_ISNULL = 1,
    UA_FILTEROPERATOR_GREATERTHAN = 2,
    UA_FILTEROPERATOR_LESSTHAN = 3,
    UA_FILTEROPERATOR_GREATERTHANOREQUAL = 4,
    UA_FILTEROPERATOR_LESSTHANOREQUAL = 5,
    UA_FILTEROPERATOR_LIKE = 6,
    UA_FILTEROPERATOR_NOT = 7,
    UA_FILTEROPERATOR_BETWEEN = 8,
    UA_FILTEROPERATOR_INLIST = 9,
    UA_FILTEROPERATOR_AND = 10,
    UA_FILTEROPERATOR_OR = 11,
    UA_FILTEROPERATOR_CAST = 12,
    UA_FILTEROPERATOR_INVIEW = 13,
    UA_FILTEROPERATOR_OFTYPE = 14,
    UA_FILTEROPERATOR_RELATEDTO = 15,
    UA_FILTEROPERATOR_BITWISEAND = 16,
    UA_FILTEROPERATOR_BITWISEOR = 17,
    __UA_FILTEROPERATOR_FORCE32BIT = 0x7fffffff
} UA_FilterOperator;
UA_STATIC_ASSERT(sizeof(UA_FilterOperator) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_FILTEROPERATOR 113

ContentFilterElement

typedef struct {
    UA_FilterOperator filterOperator;
    size_t filterOperandsSize;
    UA_ExtensionObject *filterOperands;
} UA_ContentFilterElement;

#define UA_TYPES_CONTENTFILTERELEMENT 114

ContentFilter

typedef struct {
    size_t elementsSize;
    UA_ContentFilterElement *elements;
} UA_ContentFilter;

#define UA_TYPES_CONTENTFILTER 115

ElementOperand

typedef struct {
    UA_UInt32 index;
} UA_ElementOperand;

#define UA_TYPES_ELEMENTOPERAND 116

LiteralOperand

typedef struct {
    UA_Variant value;
} UA_LiteralOperand;

#define UA_TYPES_LITERALOPERAND 117

AttributeOperand

typedef struct {
    UA_NodeId nodeId;
    UA_String alias;
    UA_RelativePath browsePath;
    UA_UInt32 attributeId;
    UA_String indexRange;
} UA_AttributeOperand;

#define UA_TYPES_ATTRIBUTEOPERAND 118

SimpleAttributeOperand

typedef struct {
    UA_NodeId typeDefinitionId;
    size_t browsePathSize;
    UA_QualifiedName *browsePath;
    UA_UInt32 attributeId;
    UA_String indexRange;
} UA_SimpleAttributeOperand;

#define UA_TYPES_SIMPLEATTRIBUTEOPERAND 119

ContentFilterElementResult

typedef struct {
    UA_StatusCode statusCode;
    size_t operandStatusCodesSize;
    UA_StatusCode *operandStatusCodes;
    size_t operandDiagnosticInfosSize;
    UA_DiagnosticInfo *operandDiagnosticInfos;
} UA_ContentFilterElementResult;

#define UA_TYPES_CONTENTFILTERELEMENTRESULT 120

ContentFilterResult

typedef struct {
    size_t elementResultsSize;
    UA_ContentFilterElementResult *elementResults;
    size_t elementDiagnosticInfosSize;
    UA_DiagnosticInfo *elementDiagnosticInfos;
} UA_ContentFilterResult;

#define UA_TYPES_CONTENTFILTERRESULT 121

TimestampsToReturn

typedef enum {
    UA_TIMESTAMPSTORETURN_SOURCE = 0,
    UA_TIMESTAMPSTORETURN_SERVER = 1,
    UA_TIMESTAMPSTORETURN_BOTH = 2,
    UA_TIMESTAMPSTORETURN_NEITHER = 3,
    UA_TIMESTAMPSTORETURN_INVALID = 4,
    __UA_TIMESTAMPSTORETURN_FORCE32BIT = 0x7fffffff
} UA_TimestampsToReturn;
UA_STATIC_ASSERT(sizeof(UA_TimestampsToReturn) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_TIMESTAMPSTORETURN 122

ReadValueId

typedef struct {
    UA_NodeId nodeId;
    UA_UInt32 attributeId;
    UA_String indexRange;
    UA_QualifiedName dataEncoding;
} UA_ReadValueId;

#define UA_TYPES_READVALUEID 123

ReadRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_Double maxAge;
    UA_TimestampsToReturn timestampsToReturn;
    size_t nodesToReadSize;
    UA_ReadValueId *nodesToRead;
} UA_ReadRequest;

#define UA_TYPES_READREQUEST 124

ReadResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_DataValue *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_ReadResponse;

#define UA_TYPES_READRESPONSE 125

WriteValue

typedef struct {
    UA_NodeId nodeId;
    UA_UInt32 attributeId;
    UA_String indexRange;
    UA_DataValue value;
} UA_WriteValue;

#define UA_TYPES_WRITEVALUE 126

WriteRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t nodesToWriteSize;
    UA_WriteValue *nodesToWrite;
} UA_WriteRequest;

#define UA_TYPES_WRITEREQUEST 127

WriteResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_WriteResponse;

#define UA_TYPES_WRITERESPONSE 128

CallMethodRequest

typedef struct {
    UA_NodeId objectId;
    UA_NodeId methodId;
    size_t inputArgumentsSize;
    UA_Variant *inputArguments;
} UA_CallMethodRequest;

#define UA_TYPES_CALLMETHODREQUEST 129

CallMethodResult

typedef struct {
    UA_StatusCode statusCode;
    size_t inputArgumentResultsSize;
    UA_StatusCode *inputArgumentResults;
    size_t inputArgumentDiagnosticInfosSize;
    UA_DiagnosticInfo *inputArgumentDiagnosticInfos;
    size_t outputArgumentsSize;
    UA_Variant *outputArguments;
} UA_CallMethodResult;

#define UA_TYPES_CALLMETHODRESULT 130

CallRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t methodsToCallSize;
    UA_CallMethodRequest *methodsToCall;
} UA_CallRequest;

#define UA_TYPES_CALLREQUEST 131

CallResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_CallMethodResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_CallResponse;

#define UA_TYPES_CALLRESPONSE 132

MonitoringMode

typedef enum {
    UA_MONITORINGMODE_DISABLED = 0,
    UA_MONITORINGMODE_SAMPLING = 1,
    UA_MONITORINGMODE_REPORTING = 2,
    __UA_MONITORINGMODE_FORCE32BIT = 0x7fffffff
} UA_MonitoringMode;
UA_STATIC_ASSERT(sizeof(UA_MonitoringMode) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_MONITORINGMODE 133

DataChangeTrigger

typedef enum {
    UA_DATACHANGETRIGGER_STATUS = 0,
    UA_DATACHANGETRIGGER_STATUSVALUE = 1,
    UA_DATACHANGETRIGGER_STATUSVALUETIMESTAMP = 2,
    __UA_DATACHANGETRIGGER_FORCE32BIT = 0x7fffffff
} UA_DataChangeTrigger;
UA_STATIC_ASSERT(sizeof(UA_DataChangeTrigger) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_DATACHANGETRIGGER 134

DeadbandType

typedef enum {
    UA_DEADBANDTYPE_NONE = 0,
    UA_DEADBANDTYPE_ABSOLUTE = 1,
    UA_DEADBANDTYPE_PERCENT = 2,
    __UA_DEADBANDTYPE_FORCE32BIT = 0x7fffffff
} UA_DeadbandType;
UA_STATIC_ASSERT(sizeof(UA_DeadbandType) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_DEADBANDTYPE 135

DataChangeFilter

typedef struct {
    UA_DataChangeTrigger trigger;
    UA_UInt32 deadbandType;
    UA_Double deadbandValue;
} UA_DataChangeFilter;

#define UA_TYPES_DATACHANGEFILTER 136

EventFilter

typedef struct {
    size_t selectClausesSize;
    UA_SimpleAttributeOperand *selectClauses;
    UA_ContentFilter whereClause;
} UA_EventFilter;

#define UA_TYPES_EVENTFILTER 137

AggregateConfiguration

typedef struct {
    UA_Boolean useServerCapabilitiesDefaults;
    UA_Boolean treatUncertainAsBad;
    UA_Byte percentDataBad;
    UA_Byte percentDataGood;
    UA_Boolean useSlopedExtrapolation;
} UA_AggregateConfiguration;

#define UA_TYPES_AGGREGATECONFIGURATION 138

AggregateFilter

typedef struct {
    UA_DateTime startTime;
    UA_NodeId aggregateType;
    UA_Double processingInterval;
    UA_AggregateConfiguration aggregateConfiguration;
} UA_AggregateFilter;

#define UA_TYPES_AGGREGATEFILTER 139

EventFilterResult

typedef struct {
    size_t selectClauseResultsSize;
    UA_StatusCode *selectClauseResults;
    size_t selectClauseDiagnosticInfosSize;
    UA_DiagnosticInfo *selectClauseDiagnosticInfos;
    UA_ContentFilterResult whereClauseResult;
} UA_EventFilterResult;

#define UA_TYPES_EVENTFILTERRESULT 140

MonitoringParameters

typedef struct {
    UA_UInt32 clientHandle;
    UA_Double samplingInterval;
    UA_ExtensionObject filter;
    UA_UInt32 queueSize;
    UA_Boolean discardOldest;
} UA_MonitoringParameters;

#define UA_TYPES_MONITORINGPARAMETERS 141

MonitoredItemCreateRequest

typedef struct {
    UA_ReadValueId itemToMonitor;
    UA_MonitoringMode monitoringMode;
    UA_MonitoringParameters requestedParameters;
} UA_MonitoredItemCreateRequest;

#define UA_TYPES_MONITOREDITEMCREATEREQUEST 142

MonitoredItemCreateResult

typedef struct {
    UA_StatusCode statusCode;
    UA_UInt32 monitoredItemId;
    UA_Double revisedSamplingInterval;
    UA_UInt32 revisedQueueSize;
    UA_ExtensionObject filterResult;
} UA_MonitoredItemCreateResult;

#define UA_TYPES_MONITOREDITEMCREATERESULT 143

CreateMonitoredItemsRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 subscriptionId;
    UA_TimestampsToReturn timestampsToReturn;
    size_t itemsToCreateSize;
    UA_MonitoredItemCreateRequest *itemsToCreate;
} UA_CreateMonitoredItemsRequest;

#define UA_TYPES_CREATEMONITOREDITEMSREQUEST 144

CreateMonitoredItemsResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_MonitoredItemCreateResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_CreateMonitoredItemsResponse;

#define UA_TYPES_CREATEMONITOREDITEMSRESPONSE 145

MonitoredItemModifyRequest

typedef struct {
    UA_UInt32 monitoredItemId;
    UA_MonitoringParameters requestedParameters;
} UA_MonitoredItemModifyRequest;

#define UA_TYPES_MONITOREDITEMMODIFYREQUEST 146

MonitoredItemModifyResult

typedef struct {
    UA_StatusCode statusCode;
    UA_Double revisedSamplingInterval;
    UA_UInt32 revisedQueueSize;
    UA_ExtensionObject filterResult;
} UA_MonitoredItemModifyResult;

#define UA_TYPES_MONITOREDITEMMODIFYRESULT 147

ModifyMonitoredItemsRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 subscriptionId;
    UA_TimestampsToReturn timestampsToReturn;
    size_t itemsToModifySize;
    UA_MonitoredItemModifyRequest *itemsToModify;
} UA_ModifyMonitoredItemsRequest;

#define UA_TYPES_MODIFYMONITOREDITEMSREQUEST 148

ModifyMonitoredItemsResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_MonitoredItemModifyResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_ModifyMonitoredItemsResponse;

#define UA_TYPES_MODIFYMONITOREDITEMSRESPONSE 149

SetMonitoringModeRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 subscriptionId;
    UA_MonitoringMode monitoringMode;
    size_t monitoredItemIdsSize;
    UA_UInt32 *monitoredItemIds;
} UA_SetMonitoringModeRequest;

#define UA_TYPES_SETMONITORINGMODEREQUEST 150

SetMonitoringModeResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_SetMonitoringModeResponse;

#define UA_TYPES_SETMONITORINGMODERESPONSE 151

SetTriggeringRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 subscriptionId;
    UA_UInt32 triggeringItemId;
    size_t linksToAddSize;
    UA_UInt32 *linksToAdd;
    size_t linksToRemoveSize;
    UA_UInt32 *linksToRemove;
} UA_SetTriggeringRequest;

#define UA_TYPES_SETTRIGGERINGREQUEST 152

SetTriggeringResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t addResultsSize;
    UA_StatusCode *addResults;
    size_t addDiagnosticInfosSize;
    UA_DiagnosticInfo *addDiagnosticInfos;
    size_t removeResultsSize;
    UA_StatusCode *removeResults;
    size_t removeDiagnosticInfosSize;
    UA_DiagnosticInfo *removeDiagnosticInfos;
} UA_SetTriggeringResponse;

#define UA_TYPES_SETTRIGGERINGRESPONSE 153

DeleteMonitoredItemsRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 subscriptionId;
    size_t monitoredItemIdsSize;
    UA_UInt32 *monitoredItemIds;
} UA_DeleteMonitoredItemsRequest;

#define UA_TYPES_DELETEMONITOREDITEMSREQUEST 154

DeleteMonitoredItemsResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_DeleteMonitoredItemsResponse;

#define UA_TYPES_DELETEMONITOREDITEMSRESPONSE 155

CreateSubscriptionRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_Double requestedPublishingInterval;
    UA_UInt32 requestedLifetimeCount;
    UA_UInt32 requestedMaxKeepAliveCount;
    UA_UInt32 maxNotificationsPerPublish;
    UA_Boolean publishingEnabled;
    UA_Byte priority;
} UA_CreateSubscriptionRequest;

#define UA_TYPES_CREATESUBSCRIPTIONREQUEST 156

CreateSubscriptionResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    UA_UInt32 subscriptionId;
    UA_Double revisedPublishingInterval;
    UA_UInt32 revisedLifetimeCount;
    UA_UInt32 revisedMaxKeepAliveCount;
} UA_CreateSubscriptionResponse;

#define UA_TYPES_CREATESUBSCRIPTIONRESPONSE 157

ModifySubscriptionRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 subscriptionId;
    UA_Double requestedPublishingInterval;
    UA_UInt32 requestedLifetimeCount;
    UA_UInt32 requestedMaxKeepAliveCount;
    UA_UInt32 maxNotificationsPerPublish;
    UA_Byte priority;
} UA_ModifySubscriptionRequest;

#define UA_TYPES_MODIFYSUBSCRIPTIONREQUEST 158

ModifySubscriptionResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    UA_Double revisedPublishingInterval;
    UA_UInt32 revisedLifetimeCount;
    UA_UInt32 revisedMaxKeepAliveCount;
} UA_ModifySubscriptionResponse;

#define UA_TYPES_MODIFYSUBSCRIPTIONRESPONSE 159

SetPublishingModeRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_Boolean publishingEnabled;
    size_t subscriptionIdsSize;
    UA_UInt32 *subscriptionIds;
} UA_SetPublishingModeRequest;

#define UA_TYPES_SETPUBLISHINGMODEREQUEST 160

SetPublishingModeResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_SetPublishingModeResponse;

#define UA_TYPES_SETPUBLISHINGMODERESPONSE 161

NotificationMessage

typedef struct {
    UA_UInt32 sequenceNumber;
    UA_DateTime publishTime;
    size_t notificationDataSize;
    UA_ExtensionObject *notificationData;
} UA_NotificationMessage;

#define UA_TYPES_NOTIFICATIONMESSAGE 162

MonitoredItemNotification

typedef struct {
    UA_UInt32 clientHandle;
    UA_DataValue value;
} UA_MonitoredItemNotification;

#define UA_TYPES_MONITOREDITEMNOTIFICATION 163

EventFieldList

typedef struct {
    UA_UInt32 clientHandle;
    size_t eventFieldsSize;
    UA_Variant *eventFields;
} UA_EventFieldList;

#define UA_TYPES_EVENTFIELDLIST 164

StatusChangeNotification

typedef struct {
    UA_StatusCode status;
    UA_DiagnosticInfo diagnosticInfo;
} UA_StatusChangeNotification;

#define UA_TYPES_STATUSCHANGENOTIFICATION 165

SubscriptionAcknowledgement

typedef struct {
    UA_UInt32 subscriptionId;
    UA_UInt32 sequenceNumber;
} UA_SubscriptionAcknowledgement;

#define UA_TYPES_SUBSCRIPTIONACKNOWLEDGEMENT 166

PublishRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t subscriptionAcknowledgementsSize;
    UA_SubscriptionAcknowledgement *subscriptionAcknowledgements;
} UA_PublishRequest;

#define UA_TYPES_PUBLISHREQUEST 167

PublishResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    UA_UInt32 subscriptionId;
    size_t availableSequenceNumbersSize;
    UA_UInt32 *availableSequenceNumbers;
    UA_Boolean moreNotifications;
    UA_NotificationMessage notificationMessage;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_PublishResponse;

#define UA_TYPES_PUBLISHRESPONSE 168

RepublishRequest

typedef struct {
    UA_RequestHeader requestHeader;
    UA_UInt32 subscriptionId;
    UA_UInt32 retransmitSequenceNumber;
} UA_RepublishRequest;

#define UA_TYPES_REPUBLISHREQUEST 169

RepublishResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    UA_NotificationMessage notificationMessage;
} UA_RepublishResponse;

#define UA_TYPES_REPUBLISHRESPONSE 170

TransferResult

typedef struct {
    UA_StatusCode statusCode;
    size_t availableSequenceNumbersSize;
    UA_UInt32 *availableSequenceNumbers;
} UA_TransferResult;

#define UA_TYPES_TRANSFERRESULT 171

TransferSubscriptionsRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t subscriptionIdsSize;
    UA_UInt32 *subscriptionIds;
    UA_Boolean sendInitialValues;
} UA_TransferSubscriptionsRequest;

#define UA_TYPES_TRANSFERSUBSCRIPTIONSREQUEST 172

TransferSubscriptionsResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_TransferResult *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_TransferSubscriptionsResponse;

#define UA_TYPES_TRANSFERSUBSCRIPTIONSRESPONSE 173

DeleteSubscriptionsRequest

typedef struct {
    UA_RequestHeader requestHeader;
    size_t subscriptionIdsSize;
    UA_UInt32 *subscriptionIds;
} UA_DeleteSubscriptionsRequest;

#define UA_TYPES_DELETESUBSCRIPTIONSREQUEST 174

DeleteSubscriptionsResponse

typedef struct {
    UA_ResponseHeader responseHeader;
    size_t resultsSize;
    UA_StatusCode *results;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_DeleteSubscriptionsResponse;

#define UA_TYPES_DELETESUBSCRIPTIONSRESPONSE 175

BuildInfo

typedef struct {
    UA_String productUri;
    UA_String manufacturerName;
    UA_String productName;
    UA_String softwareVersion;
    UA_String buildNumber;
    UA_DateTime buildDate;
} UA_BuildInfo;

#define UA_TYPES_BUILDINFO 176

RedundancySupport

typedef enum {
    UA_REDUNDANCYSUPPORT_NONE = 0,
    UA_REDUNDANCYSUPPORT_COLD = 1,
    UA_REDUNDANCYSUPPORT_WARM = 2,
    UA_REDUNDANCYSUPPORT_HOT = 3,
    UA_REDUNDANCYSUPPORT_TRANSPARENT = 4,
    UA_REDUNDANCYSUPPORT_HOTANDMIRRORED = 5,
    __UA_REDUNDANCYSUPPORT_FORCE32BIT = 0x7fffffff
} UA_RedundancySupport;
UA_STATIC_ASSERT(sizeof(UA_RedundancySupport) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_REDUNDANCYSUPPORT 177

ServerState

typedef enum {
    UA_SERVERSTATE_RUNNING = 0,
    UA_SERVERSTATE_FAILED = 1,
    UA_SERVERSTATE_NOCONFIGURATION = 2,
    UA_SERVERSTATE_SUSPENDED = 3,
    UA_SERVERSTATE_SHUTDOWN = 4,
    UA_SERVERSTATE_TEST = 5,
    UA_SERVERSTATE_COMMUNICATIONFAULT = 6,
    UA_SERVERSTATE_UNKNOWN = 7,
    __UA_SERVERSTATE_FORCE32BIT = 0x7fffffff
} UA_ServerState;
UA_STATIC_ASSERT(sizeof(UA_ServerState) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_SERVERSTATE 178

ServerDiagnosticsSummaryDataType

typedef struct {
    UA_UInt32 serverViewCount;
    UA_UInt32 currentSessionCount;
    UA_UInt32 cumulatedSessionCount;
    UA_UInt32 securityRejectedSessionCount;
    UA_UInt32 rejectedSessionCount;
    UA_UInt32 sessionTimeoutCount;
    UA_UInt32 sessionAbortCount;
    UA_UInt32 currentSubscriptionCount;
    UA_UInt32 cumulatedSubscriptionCount;
    UA_UInt32 publishingIntervalCount;
    UA_UInt32 securityRejectedRequestsCount;
    UA_UInt32 rejectedRequestsCount;
} UA_ServerDiagnosticsSummaryDataType;

#define UA_TYPES_SERVERDIAGNOSTICSSUMMARYDATATYPE 179

ServerStatusDataType

typedef struct {
    UA_DateTime startTime;
    UA_DateTime currentTime;
    UA_ServerState state;
    UA_BuildInfo buildInfo;
    UA_UInt32 secondsTillShutdown;
    UA_LocalizedText shutdownReason;
} UA_ServerStatusDataType;

#define UA_TYPES_SERVERSTATUSDATATYPE 180

Range

typedef struct {
    UA_Double low;
    UA_Double high;
} UA_Range;

#define UA_TYPES_RANGE 181

EUInformation

typedef struct {
    UA_String namespaceUri;
    UA_Int32 unitId;
    UA_LocalizedText displayName;
    UA_LocalizedText description;
} UA_EUInformation;

#define UA_TYPES_EUINFORMATION 182

AxisScaleEnumeration

typedef enum {
    UA_AXISSCALEENUMERATION_LINEAR = 0,
    UA_AXISSCALEENUMERATION_LOG = 1,
    UA_AXISSCALEENUMERATION_LN = 2,
    __UA_AXISSCALEENUMERATION_FORCE32BIT = 0x7fffffff
} UA_AxisScaleEnumeration;
UA_STATIC_ASSERT(sizeof(UA_AxisScaleEnumeration) == sizeof(UA_Int32), enum_must_be_32bit);

#define UA_TYPES_AXISSCALEENUMERATION 183

ComplexNumberType

typedef struct {
    UA_Float real;
    UA_Float imaginary;
} UA_ComplexNumberType;

#define UA_TYPES_COMPLEXNUMBERTYPE 184

DoubleComplexNumberType

typedef struct {
    UA_Double real;
    UA_Double imaginary;
} UA_DoubleComplexNumberType;

#define UA_TYPES_DOUBLECOMPLEXNUMBERTYPE 185

AxisInformation

typedef struct {
    UA_EUInformation engineeringUnits;
    UA_Range eURange;
    UA_LocalizedText title;
    UA_AxisScaleEnumeration axisScaleType;
    size_t axisStepsSize;
    UA_Double *axisSteps;
} UA_AxisInformation;

#define UA_TYPES_AXISINFORMATION 186

XVType

typedef struct {
    UA_Double x;
    UA_Float value;
} UA_XVType;

#define UA_TYPES_XVTYPE 187

EnumDefinition

typedef struct {
    size_t fieldsSize;
    UA_EnumField *fields;
} UA_EnumDefinition;

#define UA_TYPES_ENUMDEFINITION 188

DataChangeNotification

typedef struct {
    size_t monitoredItemsSize;
    UA_MonitoredItemNotification *monitoredItems;
    size_t diagnosticInfosSize;
    UA_DiagnosticInfo *diagnosticInfos;
} UA_DataChangeNotification;

#define UA_TYPES_DATACHANGENOTIFICATION 189

EventNotificationList

typedef struct {
    size_t eventsSize;
    UA_EventFieldList *events;
} UA_EventNotificationList;

#define UA_TYPES_EVENTNOTIFICATIONLIST 190