#include <strings.h>
#include <dlfcn.h>
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <string.h>
#include <ctype.h>
#include "cMsgNetwork.h"
#include "cMsgPrivate.h"
#include "cMsgRegex.h"

Macros
#define	LOCAL_ARRAY_SIZE 200

#define	MAX_STR_LEN 2000

Typedefs
typedef struct parsedUDL_t	parsedUDL

Functions
void	cMsgTrim (char *s)

void	cMsgTrimChar (char *s, char trimChar)

void	cMsgTrimDoubleChars (char *s, char trimChar)

char *	strndup (const char *s1, size_t count)

int	cMsgSetUDL (void domainId, const char UDL)

int	cMsgGetCurrentUDL (void domainId, const char *udl)

int	cMsgGetServerHost (void domainId, const char *ipAddress)

int	cMsgGetServerPort (void domainId, int port)

int	cMsgGetInfo (void domainId, const char command, char **string)

int	cMsgConnect (const char myUDL, const char myName, const char myDescription, void *domainId)

int	cMsgReconnect (void *domainId)

int	cMsgDisconnect (void **domainId)

int	cMsgSend (void domainId, void msg)

int	cMsgSyncSend (void domainId, void msg, const struct timespec timeout, int response)

int	cMsgFlush (void domainId, const struct timespec timeout)

int	cMsgSubscribe (void domainId, const char subject, const char type, cMsgCallbackFunc callback, void userArg, cMsgSubscribeConfig config, void **handle)

int	cMsgUnSubscribe (void domainId, void handle)

int	cMsgSubscriptionPause (void domainId, void handle)

int	cMsgSubscriptionResume (void domainId, void handle)

int	cMsgSubscriptionQueueCount (void domainId, void handle, int *count)

int	cMsgSubscriptionQueueIsFull (void domainId, void handle, int *full)

int	cMsgSubscriptionQueueClear (void domainId, void handle)

int	cMsgSubscriptionMessagesTotal (void domainId, void handle, int *total)

int	cMsgSendAndGet (void domainId, void sendMsg, const struct timespec timeout, void *replyMsg)

int	cMsgSubscribeAndGet (void domainId, const char subject, const char type, const struct timespec timeout, void **replyMsg)

int	cMsgMonitor (void domainId, const char command, void **replyMsg)

int	cMsgReceiveStart (void *domainId)

int	cMsgReceiveStop (void *domainId)

int	cMsgGetConnectState (void domainId, int connected)

int	cMsgSetShutdownHandler (void domainId, cMsgShutdownHandler handler, void *userArg)

int	cMsgShutdownClients (void domainId, const char client, int flag)

int	cMsgShutdownServers (void domainId, const char server, int flag)

char *	cMsgPerror (int error)

int	cMsgSetDebugLevel (int level)

int	cMsgGetUDL (void domainId, char *udl)

int	cMsgGetName (void domainId, char *name)

int	cMsgGetDescription (void domainId, char *description)

int	cMsgGetReceiveState (void domainId, int receiveState)

int	cMsgFreeMessage (void **vmsg)

int	cMsgFreeMessage_r (void **vmsg)

void *	cMsgCopyMessage (const void *vmsg)

int	cMsgInitMessage (void *vmsg)

void *	cMsgCreateMessage (void)

void *	cMsgCreateNewMessage (const void *vmsg)

void *	cMsgCreateResponseMessage (const void *vmsg)

void *	cMsgCreateNullResponseMessage (const void *vmsg)

int	cMsgGetHistoryLengthMax (const void vmsg, int len)

int	cMsgSetHistoryLengthMax (void *vmsg, int len)

int	cMsgWasSent (const void vmsg, int hasBeenSent)

int	cMsgGetVersion (const void vmsg, int version)

int	cMsgSetGetResponse (void *vmsg, int getResponse)

int	cMsgGetGetResponse (const void vmsg, int getResponse)

int	cMsgSetNullGetResponse (void *vmsg, int nullGetResponse)

int	cMsgGetNullGetResponse (const void vmsg, int nullGetResponse)

int	cMsgGetGetRequest (const void vmsg, int getRequest)

int	cMsgGetDomain (const void vmsg, const char *domain)

int	cMsgGetPayloadText (const void vmsg, const char *payloadText)

int	cMsgSetSubject (void vmsg, const char subject)

int	cMsgGetSubject (const void vmsg, const char *subject)

int	cMsgSetType (void vmsg, const char type)

int	cMsgGetType (const void vmsg, const char *type)

int	cMsgSetText (void vmsg, const char text)

int	cMsgGetText (const void vmsg, const char *text)

int	cMsgSetUserInt (void *vmsg, int userInt)

int	cMsgGetUserInt (const void vmsg, int userInt)

int	cMsgSetUserTime (void vmsg, const struct timespec userTime)

int	cMsgGetUserTime (const void vmsg, struct timespec userTime)

int	cMsgSetByteArrayEndian (void *vmsg, int endian)

int	cMsgGetByteArrayEndian (const void vmsg, int endian)

int	cMsgNeedToSwap (const void vmsg, int swap)

int	cMsgSetByteArrayLength (void *vmsg, int length)

int	cMsgResetByteArrayLength (void *vmsg)

int	cMsgGetByteArrayLength (const void vmsg, int length)

int	cMsgGetByteArrayLengthFull (const void vmsg, int length)

int	cMsgSetByteArrayOffset (void *vmsg, int offset)

int	cMsgGetByteArrayOffset (const void vmsg, int offset)

int	cMsgSetByteArrayNoCopy (void vmsg, char array, int length)

int	cMsgSetByteArray (void vmsg, char array, int length)

int	cMsgGetByteArray (const void vmsg, char *array)

int	cMsgGetSender (const void vmsg, const char *sender)

int	cMsgGetSenderHost (const void vmsg, const char *senderHost)

int	cMsgGetSenderTime (const void vmsg, struct timespec senderTime)

int	cMsgGetReceiver (const void vmsg, const char *receiver)

int	cMsgGetReceiverHost (const void vmsg, const char *receiverHost)

int	cMsgGetReceiverTime (const void vmsg, struct timespec receiverTime)

int	cMsgToString (const void vmsg, char *string)

int	cMsgToString2 (const void vmsg, char *string, int binary, int compact, int noSystemFields)

int	cMsgPayloadToString (const void vmsg, char *string, int binary, int compact, int noSystemFields)

char *	escapeQuotesForXML (char *s)

char *	escapeCdataForXML (char *s)

int	cMsgGetSubscriptionDomain (const void vmsg, const char *domain)

int	cMsgGetSubscriptionSubject (const void vmsg, const char *subject)

int	cMsgGetSubscriptionType (const void vmsg, const char *type)

int	cMsgGetSubscriptionUDL (const void vmsg, const char *udl)

int	cMsgGetSubscriptionCueSize (const void vmsg, int size)

int	cMsgSetReliableSend (void *vmsg, int boolean)

int	cMsgGetReliableSend (void vmsg, int boolean)

cMsgSubscribeConfig *	cMsgSubscribeConfigCreate (void)

int	cMsgSubscribeConfigDestroy (cMsgSubscribeConfig *config)

int	cMsgSubscribeSetMaxCueSize (cMsgSubscribeConfig *config, int size)

int	cMsgSubscribeGetMaxCueSize (cMsgSubscribeConfig config, int size)

int	cMsgSubscribeSetSkipSize (cMsgSubscribeConfig *config, int size)

int	cMsgSubscribeGetSkipSize (cMsgSubscribeConfig config, int size)

int	cMsgSubscribeSetMaySkip (cMsgSubscribeConfig *config, int maySkip)

int	cMsgSubscribeGetMaySkip (cMsgSubscribeConfig config, int maySkip)

int	cMsgSubscribeSetMustSerialize (cMsgSubscribeConfig *config, int serialize)

int	cMsgSubscribeGetMustSerialize (cMsgSubscribeConfig config, int serialize)

int	cMsgSubscribeSetMaxThreads (cMsgSubscribeConfig *config, int threads)

int	cMsgSubscribeGetMaxThreads (cMsgSubscribeConfig config, int threads)

int	cMsgSubscribeSetMessagesPerThread (cMsgSubscribeConfig *config, int mpt)

int	cMsgSubscribeGetMessagesPerThread (cMsgSubscribeConfig config, int mpt)

int	cMsgSubscribeSetStackSize (cMsgSubscribeConfig *config, size_t size)

int	cMsgSubscribeGetStackSize (cMsgSubscribeConfig config, size_t size)

Variables
int	cMsgDebug = CMSG_DEBUG_ERROR

domainTypeInfo	cmsgDomainTypeInfo

domainTypeInfo	fileDomainTypeInfo

domainTypeInfo	rcDomainTypeInfo

domainTypeInfo	emuDomainTypeInfo

Detailed Description

This file contains the entire cMsg user API.

Introduction

The user API acts as a multiplexor. Depending on the particular UDL used to connect to a specific cMsg server, the API will direct the user's library calls to the appropriate cMsg implementation.

Macro Definition Documentation

#define LOCAL_ARRAY_SIZE 200

Number of local array elements in connectionPointers array.

Referenced by cMsgConnect(), cMsgDisconnect(), cMsgFlush(), cMsgGetConnectState(), cMsgGetCurrentUDL(), cMsgGetInfo(), cMsgGetServerHost(), cMsgGetServerPort(), cMsgMonitor(), cMsgReceiveStart(), cMsgReceiveStop(), cMsgReconnect(), cMsgSend(), cMsgSendAndGet(), cMsgSetShutdownHandler(), cMsgSetUDL(), cMsgShutdownClients(), cMsgShutdownServers(), cMsgSubscribe(), cMsgSubscribeAndGet(), cMsgSubscriptionMessagesTotal(), cMsgSubscriptionPause(), cMsgSubscriptionQueueClear(), cMsgSubscriptionQueueCount(), cMsgSubscriptionQueueIsFull(), cMsgSubscriptionResume(), cMsgSyncSend(), and cMsgUnSubscribe().

#define MAX_STR_LEN 2000

Typedef Documentation

typedef struct parsedUDL_t parsedUDL

This structure contains the components of a given UDL broken down into its consituent parts.

Function Documentation

int cMsgConnect	(	const char *	myUDL,
		const char *	myName,
		const char *	myDescription,
		void **	domainId
	)

This routine is called once to connect to a domain. The argument "myUDL" is the Universal Domain Locator used to uniquely identify the cMsg server to connect to. It has the form:

cMsg:domainType://domainInfo

The argument "myName" is the client's name and may be required to be unique within the domain depending on the domain. The argument "myDescription" is an arbitrary string used to describe the client. If successful, this routine fills the argument "domainId", which identifies the connection uniquely and is required as an argument by many other routines.

Parameters

myUDL	the Universal Domain Locator used to uniquely identify the cMsg server to connect to
myName	name of this client
myDescription	description of this client
domainId	pointer to pointer which gets filled with a unique id referring to this connection.

Returns: CMSG_OK if successful; CMSG_ERROR if regular expression compilation fails during UDL parsing or circular UDL references; CMSG_BAD_ARGUMENT if one of the arguments is bad; CMSG_BAD_FORMAT if the UDL is formatted incorrectly; CMSG_OUT_OF_MEMORY if out of memory (allocated or static); any errors returned from the actual domain dependent implemenation of cMsgConnect

References CMSG_BAD_ARGUMENT, CMSG_BAD_DOMAIN_TYPE, CMSG_OK, CMSG_OUT_OF_MEMORY, and LOCAL_ARRAY_SIZE.

void* cMsgCopyMessage ( const void * vmsg )

This routine copies a message. Memory is allocated with this function and can be freed by cMsgFreeMessage(). If the given message has a byte array that was copied in, it is copied again into the new message. Otherwise, if it has a byte array whose pointer was copied, the new message will point to the same byte array.

Parameters

vmsg	pointer to message structure being copied

Returns: a pointer to the message copy; NULL if argument is NULL or no memory available

References CMSG_OK, cMsgHasPayload(), and cMsgPayloadCopy().

Referenced by cMsgCreateNewMessage().

void* cMsgCreateMessage ( void )

This routine creates a new, initialized message. Memory is allocated with this function and can be freed by cMsgFreeMessage().

Returns: a pointer to the new message; NULL if no memory available

Referenced by cMsgCreateNullResponseMessage(), and cMsgCreateResponseMessage().

void* cMsgCreateNewMessage ( const void * vmsg )

This routine copies the given message, clears the history, and is marked as NOT having been sent. Memory is allocated with this function and can be freed by cMsgFreeMessage().

Parameters

vmsg	pointer to message being copied

Returns: a pointer to the new message; NULL if no memory available or message argument is NULL

References cMsgCopyMessage().

void* cMsgCreateNullResponseMessage ( const void * vmsg )

This routine creates a new, initialized message with some fields copied from the given message in order to make it a proper "NULL" (or no message) response to a sendAndGet() request. Memory is allocated with this function and can be freed by cMsgFreeMessage().

Parameters

vmsg	pointer to message to which response fields are set

Returns: a pointer to the new message; NULL if no memory available, message argument is NULL, or message argument is not from calling sendAndGet()

References cMsgCreateMessage().

void* cMsgCreateResponseMessage ( const void * vmsg )

This routine creates a new, initialized message with some fields copied from the given message in order to make it a proper response to a sendAndGet() request. Memory is allocated with this function and can be freed by cMsgFreeMessage().

Parameters

vmsg	pointer to message to which response fields are set

Returns: a pointer to the new message; NULL if no memory available, message argument is NULL, or message argument is not from calling sendAndGet()

References cMsgCreateMessage().

int cMsgDisconnect ( void ** domainId )

This routine disconnects the client from the cMsg server. May only call this once if it succeeds since it frees memory.

Parameters

domainId address of domain connection id

Returns: CMSG_OK if successful; CMSG_ERROR if this routine already called for the given domainId; CMSG_BAD_ARGUMENT if the domainId or the pointer it refers to is NULL, or cMsgDisconnect() already called; CMSG_LOST_CONNECTION if no longer connected to domain; any errors returned from the actual domain dependent implemenation of cMsgDisconnect

References CMSG_BAD_ARGUMENT, CMSG_OK, and LOCAL_ARRAY_SIZE.

int cMsgFlush	(	void *	domainId,
		const struct timespec *	timeout
	)

This routine sends any pending (queued up) communication with the server. The implementation of this routine depends entirely on the domain in which it is being used. In the cMsg domain, this routine does nothing as all server communications are sent immediately upon calling any function.

Parameters

domainId	domain connection id
timeout	amount of time to wait for completion

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgFlush

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgFreeMessage ( void ** vmsg )

This routine frees the memory allocated in the creation of a message. The cMsg client must call this routine on any messages created to avoid memory leaks.

Parameters

vmsg	address of pointer to message structure being freed

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if msg is NULL

References CMSG_OK.

int cMsgFreeMessage_r ( void ** vmsg )

This routine frees the memory allocated in the creation of a message, but in a way which avoids mutex deadlock when recursively freeing a payload's cMsgMessage items.

Parameters

vmsg	address of pointer to message structure being freed

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if msg is NULL

References CMSG_OK.

int cMsgGetByteArray	(	const void *	vmsg,
		char **	array
	)

This routine gets a message's byte array.

Parameters

vmsg	pointer to message
array	pointer to be filled with byte array

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetByteArrayEndian	(	const void *	vmsg,
		int *	endian
	)

This routine gets the endianness of the byte array data. Valid returned values are:

Parameters

vmsg	pointer to message
endian	int pointer to be filled with byte array data endianness

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, CMSG_ENDIAN_BIG, CMSG_ENDIAN_LITTLE, and CMSG_OK.

int cMsgGetByteArrayLength	(	const void *	vmsg,
		int *	length
	)

This routine gets the region-of-interest length of a message's byte array.

Parameters

vmsg	pointer to message
length	int pointer to be filled with byte array length (in bytes)

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetByteArrayLengthFull	(	const void *	vmsg,
		int *	length
	)

This routine gets the total length of a message's byte array.

Parameters

vmsg	pointer to message
length	int pointer to be filled with byte array's total length (in bytes)

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetByteArrayOffset	(	const void *	vmsg,
		int *	offset
	)

This routine gets the region-of-interest offset of a message's byte array.

Parameters

vmsg	pointer to message
offset	int pointer to be filled with byte array offset index

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetConnectState	(	void *	domainId,
		int *	connected
	)

This routine gets the state of a cMsg connection. If connectState gets filled with a one, there is a valid connection. Anything else (zero in this case), indicates client is not connected. The meaning of "connected" may vary with domain.

Parameters

domainId	domain connection id
connected	integer pointer to be filled in with connection state, (1-connected, 0-unconnected)

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgGetConnectState

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgGetCurrentUDL	(	void *	domainId,
		const char **	udl
	)

This routine gets the UDL current used in the existing connection.

Parameters

domainId	domain connection id
udl	pointer filled in with current UDL or NULL if no connection

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called or udl arg is NULL; any errors returned from the actual domain dependent implemenation of cMsgGetConnectState

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgGetDescription	(	void *	domainId,
		char **	description
	)

This routine gets the client description used in a cMsg connection. If successful, this routine will return a pointer to char inside the system structure. The user may NOT write to this memory location!

Parameters

domainId	id of the domain connection
description	pointer to pointer filled with the description

Returns: CMSG_BAD_ARGUMENT if either arg is NULL; CMSG_OK if successful

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetDomain	(	const void *	vmsg,
		const char **	domain
	)

This routine gets the domain of a message. When a message is newly created (eg. by cMsgCreateMessage()), the domain field of a message is not set. In the cMsg domain, the cMsg server sets this field when it receives a client's sent message. Messages received from the server will have this field set. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
domain	pointer to pointer filled with message's cMsg domain

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetGetRequest	(	const void *	vmsg,
		int *	getRequest
	)

This routine gets the "get request" field of a message. The "get request" field indicates the message was sent by a sendAndGet call, if it has a value of 1. A value of 0 indicates it was not sent by a sendAndGet.

Parameters

vmsg	pointer to message
getRequest	integer pointer to be filled in with 1 if message sent by a sendAndGet and 0 otherwise

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetGetResponse	(	const void *	vmsg,
		int *	getResponse
	)

This routine gets the "get response" field of a message. The "get reponse" field indicates the message is a response to a message sent by a sendAndGet call, if it has a value of 1. A value of 0 indicates it is not a response to a sendAndGet.

Parameters

vmsg	pointer to message
getResponse	integer pointer to be filled in 1 if message is a response to a sendAndGet and 0 otherwise

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetHistoryLengthMax	(	const void *	vmsg,
		int *	len
	)

This routine gets the maximum number of entries this message keeps of its history of various parameters (sender's name, host, time).

Parameters

vmsg	pointer to message
len	integer pointer to be filled inwith max number of entries this message keeps of its history of various parameters

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetInfo	(	void *	domainId,
		const char *	command,
		char **	string
	)

This routine does general I/O and returns a string for each string argument.

Parameters

domainId	id of the domain connection
command	command whose value determines what is returned in string arg
string	pointer which gets filled in with a return string (may be NULL)

Returns: CMSG_OK if successful; CMSG_NOT_IMPLEMENTED this routine is not implemented

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgGetName	(	void *	domainId,
		char **	name
	)

This routine gets the client name used in a cMsg connection. If successful, this routine will return a pointer to char inside the system structure. The user may NOT write to this memory location!

Parameters

domainId	id of the domain connection
name	pointer to pointer filled with the name

Returns: CMSG_BAD_ARGUMENT if either arg is NULL; CMSG_OK if successful

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetNullGetResponse	(	const void *	vmsg,
		int *	nullGetResponse
	)

This routine gets the "NULL get response" field of a message. If it has a value of 1, the "NULL get response" field indicates that if the message is a response to a message sent by a sendAndGet call, when sent it will be received as a NULL pointer - not a message. Any other value indicates it is not a null get response to a sendAndGet.

Parameters

vmsg	pointer to message
nullGetResponse	integer pointer to be filled in with 1 if message is a NULL response to a sendAndGet and 0 otherwise

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetPayloadText	(	const void *	vmsg,
		const char **	payloadText
	)

This routine gets the payload text of a message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
payloadText	pointer to pointer filled with message's payload text

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetReceiver	(	const void *	vmsg,
		const char **	receiver
	)

This routine gets the receiver of a message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
receiver	pointer to pointer filled with message's receiver

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetReceiverHost	(	const void *	vmsg,
		const char **	receiverHost
	)

This routine gets the host of the receiver of a message. This field is NULL for a newly created message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
receiverHost	pointer to pointer filled with host of the message receiver

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetReceiverTime	(	const void *	vmsg,
		struct timespec *	receiverTime
	)

This routine gets the time a message was received (in seconds since midnight GMT, Jan 1st, 1970).

Parameters

vmsg	pointer to message
receiverTime	pointer to be filled with time message was received

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetReceiveState	(	void *	domainId,
		int *	receiveState
	)

This routine gets the message receiving state of a cMsg connection. If receiveState gets filled with a one, all messages sent to the client will be received and sent to appropriate callbacks . Anything else (zero in this case), indicates no messages will be received or sent to callbacks.

Parameters

domainId	id of the domain connection
receiveState	integer pointer to be filled in with the receive state

Returns: CMSG_BAD_ARGUMENT if either arg is NULL; CMSG_OK if successful

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetReliableSend	(	void *	vmsg,
		int *	boolean
	)

This routine gets whether the send will be reliable (default, TCP) or will be allowed to be unreliable (UDP).

Parameters

vmsg	pointer to message
boolean	int pointer to be filled with 1 if true (TCP), else 0 (UDP)

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSender	(	const void *	vmsg,
		const char **	sender
	)

This routine gets the sender of a message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
sender	pointer to pointer filled with message's sender

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSenderHost	(	const void *	vmsg,
		const char **	senderHost
	)

This routine gets the host of the sender of a message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
senderHost	pointer to pointer filled with host of the message sender

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSenderTime	(	const void *	vmsg,
		struct timespec *	senderTime
	)

This routine gets the time a message was last sent (in seconds since midnight GMT, Jan 1st, 1970).

Parameters

vmsg	pointer to message
senderTime	pointer to be filled with time message was last sent

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetServerHost	(	void *	domainId,
		const char **	ipAddress
	)

This routine gets the IP address (in dotted-decimal form) that the client used to make the network connection to itsserver. Do NOT write into or free the returned char pointer.

Parameters

domainId	id of the domain connection
ipAddress	pointer filled in with server IP address

Returns: CMSG_OK if successful; CMSG_NOT_IMPLEMENTED if not implemented in the given domain; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgGetServerPort	(	void *	domainId,
		int *	port
	)

This routine gets the port that the client used to make the network connection to its server.

Parameters

domainId	id of the domain connection
port	pointer filled in with server TCP port

Returns: CMSG_OK if successful; CMSG_NOT_IMPLEMENTED if not implemented in the given domain; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgGetSubject	(	const void *	vmsg,
		const char **	subject
	)

This routine gets the subject of a message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
subject	pointer to pointer filled with message's subject

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSubscriptionCueSize	(	const void *	vmsg,
		int *	size
	)

This routine gets the cue size of a callback and is valid only when used in a callback on the message given in the callback argument.

Parameters

vmsg	pointer to message
size	pointer which gets filled with a callback's cue size or -1 if no information is available

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSubscriptionDomain	(	const void *	vmsg,
		const char **	domain
	)

This routine gets the domain a subscription is running in and is valid only when used in a callback on the message given in the callback argument. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
domain	pointer to pointer filled with a subscription's domain or NULL if no information is available

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSubscriptionSubject	(	const void *	vmsg,
		const char **	subject
	)

This routine gets the subject a subscription is using and is valid only when used in a callback on the message given in the callback argument. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
subject	pointer to pointer filled with a subscription's subject or NULL if no information is available

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSubscriptionType	(	const void *	vmsg,
		const char **	type
	)

This routine gets the type a subscription is using and is valid only when used in a callback on the message given in the callback argument. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
type	pointer to pointer filled with a subscription's type or NULL if no information is available

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetSubscriptionUDL	(	const void *	vmsg,
		const char **	udl
	)

This routine gets the udl of a subscription's connection and is valid only when used in a callback on the message given in the callback argument. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
udl	pointer to pointer filled with the udl of a subscription's connection or NULL if no information is available

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetText	(	const void *	vmsg,
		const char **	text
	)

This routine gets the text of a message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
text	pointer to pointer filled with a message's text

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetType	(	const void *	vmsg,
		const char **	type
	)

This routine gets the type of a message. If successful, this routine will return a pointer to char inside the message structure. The user may NOT write to this memory location!

Parameters

vmsg	pointer to message
type	pointer to pointer filled with message's type

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetUDL	(	void *	domainId,
		char **	udl
	)

This routine gets the UDL used to establish a cMsg connection. If successful, this routine will return a pointer to char inside the system structure. The user may NOT write to this memory location!

Parameters

domainId	id of the domain connection
udl	pointer to pointer filled with the UDL

Returns: CMSG_BAD_ARGUMENT if either arg is NULL; CMSG_OK if successful

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetUserInt	(	const void *	vmsg,
		int *	userInt
	)

This routine gets a message's user-defined integer.

Parameters

vmsg	pointer to message
userInt	integer pointer to be filled with message's user-defined integer

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetUserTime	(	const void *	vmsg,
		struct timespec *	userTime
	)

This routine gets a message's user-defined time (in seconds since midnight GMT, Jan 1st, 1970).

Parameters

vmsg	pointer to message
userTime	time_t pointer to be filled with message's user-defined time

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgGetVersion	(	const void *	vmsg,
		int *	version
	)

This routine gets the cMsg major version number of a message.

Parameters

vmsg	pointer to message
version	integer pointer to be filled in with cMsg major version

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgInitMessage ( void * vmsg )

This routine initializes a message. It frees all allocated memory, sets all strings to NULL, and sets all numeric values to their default state.

Parameters

vmsg	pointer to message structure being initialized

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if msg is NULL

References CMSG_OK.

int cMsgMonitor	(	void *	domainId,
		const char *	command,
		void **	replyMsg
	)

This method is a synchronous call to receive a message containing monitoring data which describes the state of the cMsg domain the user is connected to. The time is data was sent can be obtained by calling cMsgGetSenderTime. The monitoring data in xml format can be obtained by calling cMsgGetText.

Parameters

domainId	domain connection id
command	string to monitor data collecting routine
replyMsg	message received from the domain containing monitor data

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSendAndGet

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgNeedToSwap	(	const void *	vmsg,
		int *	swap
	)

This method specifies whether the endian value of the byte array is the same value as the local host. If not, a 1 is returned indicating that the data needs to be swapped. If so, a 0 is returned indicating that no swap is needed.

Parameters

vmsg	pointer to message
swap	int pointer to be filled with 1 if byte array needs swapping, else 0

Returns: CMSG_OK if successful; CMSG_ERROR if local endianness is unknown; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, CMSG_ENDIAN_BIG, CMSG_ENDIAN_LITTLE, CMSG_ERROR, and CMSG_OK.

int cMsgPayloadToString	(	const void *	vmsg,
		char **	string,
		int	binary,
		int	compact,
		int	noSystemFields
	)

This routine converts the message payload to an XML string.

Parameters

vmsg	pointer to message
string	is pointer to char* that will hold the malloc'd string
binary	includes binary as ASCII if true, else binary is ignored
compact	if true (!=0), do not include attributes with null or default integer values
noSystemFields	if true (!=0), do not include system (metadata) payload fields

Returns: CMSG_OK if successful; CMSG_ERROR if internal payload parsing error, or cannot get a payload item's type or count; CMSG_BAD_ARGUMENT if message is NULL; CMSG_OUT_OF_MEMORY if out of memory

char* cMsgPerror ( int error )

This routine returns a string describing the given error condition. It can also print out that same string with printf if the debug level is set to CMSG_DEBUG_ERROR or CMSG_DEBUG_SEVERE by cMsgSetDebugLevel(). The returned string is a static char array. This means it is not thread-safe and will be overwritten on subsequent calls.

Parameters

error error condition

Returns: error string

References CMSG_ABORT, CMSG_ALREADY_EXISTS, CMSG_ALREADY_INIT, CMSG_BAD_ARGUMENT, CMSG_BAD_DOMAIN_ID, CMSG_BAD_DOMAIN_TYPE, CMSG_BAD_FORMAT, CMSG_BAD_MESSAGE, CMSG_DEBUG_ERROR, CMSG_DIFFERENT_VERSION, CMSG_ERROR, CMSG_ILLEGAL_MSGTYPE, CMSG_LIMIT_EXCEEDED, CMSG_LOST_CONNECTION, CMSG_NETWORK_ERROR, CMSG_NO_CLASS_FOUND, CMSG_NOT_IMPLEMENTED, CMSG_NOT_INITIALIZED, CMSG_OK, CMSG_OUT_OF_MEMORY, CMSG_OUT_OF_RANGE, CMSG_PEND_ERROR, CMSG_SERVER_DIED, CMSG_SOCKET_ERROR, CMSG_TIMEOUT, CMSG_WRONG_DOMAIN_TYPE, CMSG_WRONG_PASSWORD, and cMsgDebug.

int cMsgReceiveStart ( void * domainId )

This routine enables the receiving of messages and delivery to callbacks. The receiving of messages is disabled by default and must be explicitly enabled.

Parameters

domainId domain connection id

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgReceiveStart

References CMSG_BAD_ARGUMENT, CMSG_OK, and LOCAL_ARRAY_SIZE.

int cMsgReceiveStop ( void * domainId )

This routine disables the receiving of messages and delivery to callbacks. The receiving of messages is disabled by default. This routine only has an effect when cMsgReceiveStart() was previously called.

Parameters

domainId domain connection id

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgReceiveStop

References CMSG_BAD_ARGUMENT, CMSG_OK, and LOCAL_ARRAY_SIZE.

int cMsgReconnect ( void * domainId )

This routine tries to reconnect to the server if a connection is broken. The domainId argument is created by first calling cMsgConnect() and establishing a connection to a cMsg server

Parameters

domainId domain connection id

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if domainId is bad or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgReconnect

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgResetByteArrayLength ( void * vmsg )

This routine resets the region-of-interest length of a message's byte array to its total length or zero if there is none.

Parameters

vmsg	pointer to message

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSend	(	void *	domainId,
		void *	msg
	)

This routine sends a msg to the specified domain server. It is completely asynchronous and never blocks. The domain may require cMsgFlush() to be called to force delivery. The domainId argument is created by calling cMsgConnect() and establishing a connection to a cMsg server. The message to be sent may be created by calling cMsgCreateMessage(), cMsgCreateNewMessage(), or cMsgCopyMessage().

Parameters

domainId	domain connection id
msg	pointer to a message structure

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSend

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSendAndGet	(	void *	domainId,
		void *	sendMsg,
		const struct timespec *	timeout,
		void **	replyMsg
	)

This routine gets one message from another cMsg client by sending out an initial message to that responder. It is a synchronous routine that fails when no reply is received with the given timeout. This function can be thought of as a peer-to-peer exchange of messages. One message is sent to all listeners. The first responder to the initial message will have its single response message sent back to the original sender. In the cMsg domain, if there are no subscribers to get the sent message, this routine returns CMSG_OK, but with a NULL message.

Parameters

domainId	domain connection id
sendMsg	messages to send to all listeners
timeout	amount of time to wait for the response message
replyMsg	message received from the responder; may be NULL

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSendAndGet

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSetByteArray	(	void *	vmsg,
		char *	array,
		int	length
	)

This routine sets a message's byte array by copying "length" number of bytes into a newly allocated array. The offset is reset to 0 while the length is set to the given value. Any pre-existing byte array memory is freed if it was copied into the given message. If the given array is null, the message's byte array is set to null and both offset & length are set to 0.

Parameters

vmsg	pointer to message
array	byte array
length	number of bytes in array

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL, or length < 0; CMSG_OUT_OF_MEMORY if out of memory

References CMSG_BAD_ARGUMENT, CMSG_OK, and CMSG_OUT_OF_MEMORY.

int cMsgSetByteArrayEndian	(	void *	vmsg,
		int	endian
	)

This routine sets the endianness of the byte array data. Valid values are:

Parameters

vmsg	pointer to message
endian	byte array's endianness

Returns: CMSG_OK if successful; CMSG_ERROR if local endianness is unknown; CMSG_BAD_ARGUMENT if message is NULL, or endian is not equal to either CMSG_ENDIAN_BIG, CMSG_ENDIAN_LITTLE, CMSG_ENDIAN_LOCAL, CMSG_ENDIAN_NOTLOCAL, or CMSG_ENDIAN_SWITCH

References CMSG_BAD_ARGUMENT, CMSG_ENDIAN_BIG, CMSG_ENDIAN_LITTLE, CMSG_ENDIAN_LOCAL, CMSG_ENDIAN_NOTLOCAL, CMSG_ENDIAN_SWITCH, CMSG_ERROR, and CMSG_OK.

int cMsgSetByteArrayLength	(	void *	vmsg,
		int	length
	)

This routine sets the region-of-interest length of a message's byte array. This may be smaller than the full length of the array if the user is only interested in a portion of the array. If the byte array is null, all non-negative values are accepted.

Parameters

vmsg	pointer to message
length	byte array's length (in bytes)

Returns: CMSG_OK if successful; CMSG_OUT_OF_RANGE if offset + length is beyond array bounds; CMSG_BAD_ARGUMENT if message is NULL or length < 0

References CMSG_BAD_ARGUMENT, CMSG_OK, and CMSG_OUT_OF_RANGE.

int cMsgSetByteArrayNoCopy	(	void *	vmsg,
		char *	array,
		int	length
	)

This routine sets a message's byte array by copying the array arg pointer but NOT the data pointed to. The length arg sets the total length of the array in bytes. Any pre-existing byte array data is freed if it was copied into the given message. If the given array is null, the message's byte array is set to null and both offset & length are set to 0.

Parameters

vmsg	pointer to message
array	byte array
length	number of bytes in array

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL or length is < 0

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetByteArrayOffset	(	void *	vmsg,
		int	offset
	)

This routine sets the region-of-interest offset of a message's byte array. This may be non-zero if the user is only interested in a portion of the array. If the byte array is null, all non-negative values are accepted.

Parameters

vmsg	pointer to message
offset	byte array's offset index

Returns: CMSG_OK if successful; CMSG_OUT_OF_RANGE if offset + length is beyond array bounds; CMSG_BAD_ARGUMENT if message is NULL or offset < 0

References CMSG_BAD_ARGUMENT, CMSG_OK, and CMSG_OUT_OF_RANGE.

int cMsgSetDebugLevel ( int level )

This routine sets the level of debug output. The argument should be one of:

Parameters

level debug level desired

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if debug level is bad

References CMSG_BAD_ARGUMENT, CMSG_DEBUG_ERROR, CMSG_DEBUG_INFO, CMSG_DEBUG_NONE, CMSG_DEBUG_SEVERE, CMSG_DEBUG_WARN, CMSG_OK, and cMsgDebug.

int cMsgSetGetResponse	(	void *	vmsg,
		int	getResponse
	)

This routine sets the "get response" field of a message. The "get reponse" field indicates the message is a response to a message sent by a sendAndGet call, if it has a value of 1. Any other value indicates it is not a response to a sendAndGet.

Parameters

vmsg	pointer to message
getResponse	set to 1 if message is a response to a sendAndGet, anything else otherwise

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message argument is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetHistoryLengthMax	(	void *	vmsg,
		int	len
	)

This routine sets the maximum number of entries this message keeps of its history of various parameters (sender's name, host, time).

Parameters

vmsg	pointer to message
len	max number of entries this message keeps of its history of various parameters

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message argument is NULL; CMSG_OUT_OF_RANGE if len < 0 or > CMSG_HISTORY_LENGTH_ABS_MAX

References CMSG_OK, and CMSG_OUT_OF_RANGE.

int cMsgSetNullGetResponse	(	void *	vmsg,
		int	nullGetResponse
	)

This routine sets the "null get response" field of a message. If it has a value of 1, the "null get response" field indicates that if the message is a response to a message sent by a sendAndGet call, when sent it will be received as a NULL pointer - not a message. Any other value indicates it is not a null get response to a sendAndGet.

Parameters

vmsg	pointer to message
nullGetResponse	set to 1 if message is a null get response to a sendAndGet, anything else otherwise

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message argument is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetReliableSend	(	void *	vmsg,
		int	boolean
	)

This routine sets whether the send will be reliable (default, TCP) or will be allowed to be unreliable (UDP).

Parameters

vmsg	pointer to message
boolean	0 if false (use UDP), anything else true (use TCP)

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetShutdownHandler	(	void *	domainId,
		cMsgShutdownHandler *	handler,
		void *	userArg
	)

This routine sets the shutdown handler function.

Parameters

domainId	domain connection id
handler	shutdown handler function
userArg	argument to shutdown handler

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgDisconnect

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSetSubject	(	void *	vmsg,
		const char *	subject
	)

This routine sets the subject of a message.

Parameters

vmsg	pointer to message
subject	message subject

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetText	(	void *	vmsg,
		const char *	text
	)

This routine sets the text of a message.

Parameters

vmsg	pointer to message
text	message text

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetType	(	void *	vmsg,
		const char *	type
	)

This routine sets the type of a message.

Parameters

vmsg	pointer to message
type	message type

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetUDL	(	void *	domainId,
		const char *	UDL
	)

This routine resets the UDL (may be a semicolon separated list of single UDLs). If a reconnect is done, the new UDLs will be used in the connection(s).

Parameters

domainId	domain connection id
UDL	new UDL

Returns: CMSG_OK if successful; CMSG_ERROR if not successful reading file for configFile domain UDL; CMSG_BAD_FORMAT if configFile domain file contains UDL of configFile domain or if one of the UDLs is not in the correct format; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called or UDL arg has illegal characters or is NULL; CMSG_OUT_OF_MEMORY if out of memory; CMSG_WRONG_DOMAIN_TYPE one of the domains is of the wrong type; any errors returned from the actual domain dependent implemenation of cMsgSetUDL

References CMSG_BAD_ARGUMENT, CMSG_OK, CMSG_WRONG_DOMAIN_TYPE, and LOCAL_ARRAY_SIZE.

int cMsgSetUserInt	(	void *	vmsg,
		int	userInt
	)

This routine sets a message's user-defined integer.

Parameters

vmsg	pointer to message
userInt	message's user-defined integer

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSetUserTime	(	void *	vmsg,
		const struct timespec *	userTime
	)

This routine sets a message's user-defined time (in seconds since midnight GMT, Jan 1st, 1970).

Parameters

vmsg	pointer to message
userTime	message's user-defined time

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if message is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgShutdownClients	(	void *	domainId,
		const char *	client,
		int	flag
	)

Method to shutdown the given clients.

Parameters

domainId	domain connection id
client	client(s) to be shutdown
flag	flag describing the mode of shutdown: 0 to not include self, CMSG_SHUTDOWN_INCLUDE_ME to include self in shutdown.

Returns: CMSG_OK if successful; CMSG_NOT_IMPLEMENTED if the subdomain used does NOT implement shutdown; CMSG_NETWORK_ERROR if error in communicating with the server; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called or flag argument improper value; any errors returned from the actual domain dependent implemenation of cMsgDisconnect

References CMSG_BAD_ARGUMENT, CMSG_SHUTDOWN_INCLUDE_ME, and LOCAL_ARRAY_SIZE.

int cMsgShutdownServers	(	void *	domainId,
		const char *	server,
		int	flag
	)

Method to shutdown the given servers.

Parameters

domainId	domain connection id
server	server(s) to be shutdown
flag	flag describing the mode of shutdown: 0 to not include self, CMSG_SHUTDOWN_INCLUDE_ME to include self in shutdown.

Returns: CMSG_OK if successful; CMSG_NOT_IMPLEMENTED if the subdomain used does NOT implement shutdown; CMSG_NETWORK_ERROR if error in communicating with the server; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called or flag argument improper value; any errors returned from the actual domain dependent implemenation of cMsgDisconnect

References CMSG_BAD_ARGUMENT, CMSG_SHUTDOWN_INCLUDE_ME, and LOCAL_ARRAY_SIZE.

int cMsgSubscribe	(	void *	domainId,
		const char *	subject,
		const char *	type,
		cMsgCallbackFunc *	callback,
		void *	userArg,
		cMsgSubscribeConfig *	config,
		void **	handle
	)

This routine subscribes to messages of the given subject and type. When a message is received, the given callback is passed the message pointer and the userArg pointer and then is executed. A configuration structure is given to determine the behavior of the callback. Only 1 subscription for a specific combination of subject, type, callback and userArg is allowed.

Parameters

domainId	domain connection id
subject	subject of messages subscribed to
type	type of messages subscribed to
callback	pointer to callback to be executed on receipt of message
userArg	user-specified pointer to be passed to the callback
config	pointer to callback configuration structure
handle	pointer to handle (void pointer) to be used for unsubscribing from this subscription

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSubscribe

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSubscribeAndGet	(	void *	domainId,
		const char *	subject,
		const char *	type,
		const struct timespec *	timeout,
		void **	replyMsg
	)

This routine gets one message from a one-time subscription to the given subject and type.

Parameters

domainId	domain connection id
subject	subject of message subscribed to
type	type of message subscribed to
timeout	amount of time to wait for the message
replyMsg	message received

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSendAndGet

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

cMsgSubscribeConfig* cMsgSubscribeConfigCreate ( void )

This routine creates a structure of configuration information used to determine the behavior of a cMsgSubscribe()'s callback. The configuration is filled with default values. Each aspect of the configuration may be modified by setter and getter functions. The defaults are:

maximum messages to cue for callback is 10000
no messages may be skipped
calls to the callback function must be serialized
may skip up to 2000 messages at once if skipping is enabled
maximum number of threads when parallelizing calls to the callback function is 100
enough worker threads are started so that there are at most 150 unprocessed messages for each thread

Note that this routine allocates memory and cMsgSubscribeConfigDestroy() must be called to free it.

Returns: NULL if no memory available; pointer to configuration if successful

int cMsgSubscribeConfigDestroy ( cMsgSubscribeConfig * config )

This routine frees the memory associated with a configuration created by cMsgSubscribeConfigCreate();

Parameters

config pointer to configuration

Returns: CMSG_OK

References CMSG_OK.

int cMsgSubscribeGetMaxCueSize	(	cMsgSubscribeConfig *	config,
		int *	size
	)

This routine gets a subscribe configuration's maximum message cue size. Messages are kept in the cue until they can be processed by the callback function.

Parameters

config	pointer to configuration
size	integer pointer to be filled with configuration's maximum cue size

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSubscribeGetMaxThreads	(	cMsgSubscribeConfig *	config,
		int *	threads
	)

This routine gets the maximum number of threads a parallelized subscribe's callback can run at once. This setting is only used if cMsgSubscribeSetMustSerialize() was called with an argument of 0.

Parameters

config	pointer to configuration
threads	integer pointer to be filled with the maximum number of threads a parallelized subscribe's callback can run at once

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSubscribeGetMaySkip	(	cMsgSubscribeConfig *	config,
		int *	maySkip
	)

This routine gets whether messages may be skipped over (deleted) if too many messages are piling up in the cue. The maximum number of messages skipped at once is determined by cMsgSubscribeSetSkipSize().

Parameters

config	pointer to configuration
maySkip	integer pointer to be filled with 0 if messages may NOT be skipped (deleted), or anything else otherwise

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSubscribeGetMessagesPerThread	(	cMsgSubscribeConfig *	config,
		int *	mpt
	)

This routine gets the maximum number of unprocessed messages per thread before a new thread is started, if a callback is parallelized (cMsgSubscribeSetMustSerialize() set to 0).

Parameters

config	pointer to configuration
mpt	integer pointer to be filled with the maximum number of unprocessed messages per thread before starting another thread

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSubscribeGetMustSerialize	(	cMsgSubscribeConfig *	config,
		int *	serialize
	)

This routine gets whether a subscribe's callback must be run serially (in one thread), or may be parallelized (run simultaneously in more than one thread) if more than 1 message is waiting in the cue.

Parameters

config	pointer to configuration
serialize	integer pointer to be filled with 0 if callback may be parallelized, or anything else if callback must be serialized

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSubscribeGetSkipSize	(	cMsgSubscribeConfig *	config,
		int *	size
	)

This routine gets the number of messages to skip over (delete) if too many messages are piling up in the cue. Messages are only skipped if cMsgSubscribeSetMaySkip() sets the configuration to do so.

Parameters

config	pointer to configuration
size	integer pointer to be filled with the number of messages to skip (delete)

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSubscribeGetStackSize	(	cMsgSubscribeConfig *	config,
		size_t *	size
	)

This routine gets the stack size in bytes of the subscription thread. By default the stack size is unspecified (returns 0).

Parameters

config	pointer to configuration
size	pointer to be filled with stack size in bytes of subscription thread

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

int cMsgSubscribeSetMaxCueSize	(	cMsgSubscribeConfig *	config,
		int	size
	)

This routine sets a subscribe configuration's maximum message cue size. Messages are kept in the cue until they can be processed by the callback function.

Parameters

config	pointer to configuration
size	maximum cue size

Returns: CMSG_OK if successful; CMSG_NOT_INITIALIZED if configuration was not initialized; CMSG_BAD_ARGUMENT if configuration is NULL or size < 1

References CMSG_BAD_ARGUMENT, CMSG_NOT_INITIALIZED, and CMSG_OK.

int cMsgSubscribeSetMaxThreads	(	cMsgSubscribeConfig *	config,
		int	threads
	)

This routine sets the maximum number of threads a parallelized subscribe's callback can run at once. This setting is only used if cMsgSubscribeSetMustSerialize() was called with an argument of 0.

Parameters

config	pointer to configuration
threads	the maximum number of threads a parallelized subscribe's callback can run at once

Returns: CMSG_OK if successful; CMSG_NOT_INITIALIZED if configuration was not initialized; CMSG_BAD_ARGUMENT if configuration is NULL or threads < 0

References CMSG_BAD_ARGUMENT, CMSG_NOT_INITIALIZED, and CMSG_OK.

int cMsgSubscribeSetMaySkip	(	cMsgSubscribeConfig *	config,
		int	maySkip
	)

This routine sets whether messages may be skipped over (deleted) if too many messages are piling up in the cue. The maximum number of messages skipped at once is determined by cMsgSubscribeSetSkipSize().

Parameters

config	pointer to configuration
maySkip	set to 0 if messages may NOT be skipped, set to anything else otherwise

Returns: CMSG_OK if successful; CMSG_NOT_INITIALIZED if configuration was not initialized; CMSG_BAD_ARGUMENT if configuration is NULL

References CMSG_BAD_ARGUMENT, CMSG_NOT_INITIALIZED, and CMSG_OK.

int cMsgSubscribeSetMessagesPerThread	(	cMsgSubscribeConfig *	config,
		int	mpt
	)

This routine sets the maximum number of unprocessed messages per thread before a new thread is started, if a callback is parallelized (cMsgSubscribeSetMustSerialize() set to 0).

Parameters

config	pointer to configuration
mpt	set to maximum number of unprocessed messages per thread before starting another thread

Returns: CMSG_OK if successful; CMSG_NOT_INITIALIZED if configuration was not initialized; CMSG_BAD_ARGUMENT if configuration is NULL or mpt < 1

References CMSG_BAD_ARGUMENT, CMSG_NOT_INITIALIZED, and CMSG_OK.

int cMsgSubscribeSetMustSerialize	(	cMsgSubscribeConfig *	config,
		int	serialize
	)

This routine sets whether a subscribe's callback must be run serially (in one thread), or may be parallelized (run simultaneously in more than one thread) if more than 1 message is waiting in the cue.

Parameters

config	pointer to configuration
serialize	set to 0 if callback may be parallelized, or set to anything else if callback must be serialized

Returns: CMSG_OK if successful; CMSG_NOT_INITIALIZED if configuration was not initialized; CMSG_BAD_ARGUMENT if configuration is NULL

References CMSG_BAD_ARGUMENT, CMSG_NOT_INITIALIZED, and CMSG_OK.

int cMsgSubscribeSetSkipSize	(	cMsgSubscribeConfig *	config,
		int	size
	)

This routine sets the number of messages to skip over (delete) if too many messages are piling up in the cue. Messages are only skipped if cMsgSubscribeSetMaySkip() sets the configuration to do so.

Parameters

config	pointer to configuration
size	number of messages to skip (delete)

Returns: CMSG_OK if successful; CMSG_NOT_INITIALIZED if configuration was not initialized; CMSG_BAD_ARGUMENT if configuration is NULL or size < 0

References CMSG_BAD_ARGUMENT, CMSG_NOT_INITIALIZED, and CMSG_OK.

int cMsgSubscribeSetStackSize	(	cMsgSubscribeConfig *	config,
		size_t	size
	)

This routine sets the stack size in bytes of the subscription thread. By default the stack size is unspecified.

Parameters

config	pointer to configuration
size	stack size in bytes of subscription thread

Returns: CMSG_OK if successful; CMSG_NOT_INITIALIZED if configuration was not initialized; CMSG_BAD_ARGUMENT if configuration is NULL or size < 1 byte

References CMSG_BAD_ARGUMENT, CMSG_NOT_INITIALIZED, and CMSG_OK.

int cMsgSubscriptionMessagesTotal	(	void *	domainId,
		void *	handle,
		int *	total
	)

This routine returns the total number of messages sent to a subscription callback.

Parameters

domainId	domain connection id
handle	void pointer obtained from cMsgSubscribe
total	int pointer filled in with total number of messages sent to a subscription callback

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSubscriptionPause

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSubscriptionPause	(	void *	domainId,
		void *	handle
	)

This routine pauses the delivery of messages to the given subscription callback.

Parameters

domainId	domain connection id
handle	void pointer obtained from cMsgSubscribe

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; CMSG_NOT_IMPLEMENTED if the subdomain used does NOT implement this function; any errors returned from the actual domain dependent implemenation of cMsgSubscriptionPause

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSubscriptionQueueClear	(	void *	domainId,
		void *	handle
	)

This routine clears a subscription callback's queue of all messages.

Parameters

domainId	domain connection id
handle	void pointer obtained from cMsgSubscribe

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if the id/handle is bad or handle is NULL

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSubscriptionQueueCount	(	void *	domainId,
		void *	handle,
		int *	count
	)

This routine returns the number of messages currently in a subscription callback's queue.

Parameters

domainId	domain connection id
handle	void pointer obtained from cMsgSubscribe
count	int pointer filled in with number of messages in subscription callback queue

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSubscriptionPause

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSubscriptionQueueIsFull	(	void *	domainId,
		void *	handle,
		int *	full
	)

This routine returns true(1) if a subscription callback's queue is full, else false(0).

Parameters

domainId	domain connection id
handle	void pointer obtained from cMsgSubscribe
full	int pointer filled in with 1 if subscription callback queue full, else 0

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSubscriptionPause

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSubscriptionResume	(	void *	domainId,
		void *	handle
	)

This routine resumes the delivery of messages to the given subscription callback.

Parameters

domainId	domain connection id
handle	void pointer obtained from cMsgSubscribe

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; CMSG_NOT_IMPLEMENTED if the subdomain used does NOT implement this function; any errors returned from the actual domain dependent implemenation of cMsgSubscriptionPause

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgSyncSend	(	void *	domainId,
		void *	msg,
		const struct timespec *	timeout,
		int *	response
	)

This routine sends a msg to the specified domain server and receives a response. It is a synchronous routine and as a result blocks until it receives a status integer from the cMsg server. The domainId argument is created by calling cMsgConnect() and establishing a connection to a cMsg server. The message to be sent may be created by calling cMsgCreateMessage(), cMsgCreateNewMessage(), or cMsgCopyMessage().

Parameters

domainId	domain connection id
msg	pointer to a message structure
timeout	amount of time to wait for the response
response	integer pointer that gets filled with the response

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgSyncSend

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgToString	(	const void *	vmsg,
		char **	string
	)

This routine converts the message to an XML string. Everything is displayed including binary.

Parameters

vmsg	pointer to message
string	is pointer to char* that will hold the malloc'd string

Returns: CMSG_OK if successful; CMSG_ERROR if internal payload parsing error, or cannot get a payload item's type or count; CMSG_BAD_ARGUMENT if message is NULL; CMSG_OUT_OF_MEMORY if out of memory

int cMsgToString2	(	const void *	vmsg,
		char **	string,
		int	binary,
		int	compact,
		int	noSystemFields
	)

This routine converts the message to an XML string.

Parameters

vmsg	pointer to message
string	is pointer to char* that will hold the malloc'd string
binary	includes binary as ASCII if true, else binary is ignored
compact	if true (!=0), do not include attributes with null or default integer values
noSystemFields	if true (!=0), do not include system (metadata) payload fields

Returns: CMSG_OK if successful; CMSG_ERROR if internal payload parsing error, or cannot get a payload item's type or count; CMSG_BAD_ARGUMENT if message is NULL; CMSG_OUT_OF_MEMORY if out of memory

void cMsgTrim ( char * s )

Routine to trim white space from front and back of given string. Changes made to argument string in place.

Parameters

s	string to be trimmed

void cMsgTrimChar	(	char *	s,
		char	trimChar
	)

Routine to trim a given character from front and back of given string. Changes made to argument string in place.

Parameters

s	string to be trimmed
trimChar	character to be trimmed

void cMsgTrimDoubleChars	(	char *	s,
		char	trimChar
	)

Routine to eliminate contiguous occurrences of a given character in given string. Changes made to argument string in place.

Parameters

s	string to be trimmed
trimChar	character to be trimmed

int cMsgUnSubscribe	(	void *	domainId,
		void *	handle
	)

This routine unsubscribes to messages of the given handle (which represents a given subject, type, callback, and user argument).

Parameters

domainId	domain connection id
handle	void pointer obtained from cMsgSubscribe

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if bad domainId or cMsgDisconnect() already called; any errors returned from the actual domain dependent implemenation of cMsgUnSubscribe

References CMSG_BAD_ARGUMENT, and LOCAL_ARRAY_SIZE.

int cMsgWasSent	(	const void *	vmsg,
		int *	hasBeenSent
	)

This routine returns whether a message has been sent over the wire or not.

Parameters

vmsg	pointer to message
hasBeenSent	pointer which gets filled with 1 if msg has been sent, else 0

Returns: CMSG_OK if successful; CMSG_BAD_ARGUMENT if either arg is NULL

References CMSG_BAD_ARGUMENT, and CMSG_OK.

char* escapeCdataForXML ( char * s )

This routine escapes CDATA constructs which will appear inside of XML CDATA sections. It is not possible to have nested cdata sections. Actually the CDATA ending sequence, ]]> , is what cannot be containing in a surrounding CDATA section. This restriction can be cleverly circumvented by inserting "<![CDATA[]]]]><![CDATA[>" after each CDATA ending sequence. This creates independent CDATA sections which are not nested.

This routine assumes that there are no nested cdata sections in the input string. Nothing is done to the string if:

there is no ]]> so no escaping is necessary
there is no <![CDATA[ so s contains malformed XML
a particular <![CDATA[ has no corresponding ]]> so s contains malformed XML
]]> comes before <![CDATA[ so s contains malformed XML

Parameters

s	string to be escaped

Returns: escaped string, NULL if no memory or arg is NULL

char* escapeQuotesForXML ( char * s )

This routine escapes the " char for putting strings into XML. If no quotes are found, the original string is returned (no memory is allocated). If quotes are found, a new string is returned which must be freed by the caller.

Parameters

s	string to be escaped

Returns: escaped string, NULL if no memory or arg is NULL

char* strndup	(	const char *	s1,
		size_t	count
	)

Variable Documentation

int cMsgDebug = CMSG_DEBUG_ERROR

Global debug level.

Referenced by cMsgPerror(), and cMsgSetDebugLevel().

domainTypeInfo cmsgDomainTypeInfo

For domain implementations.

domainTypeInfo emuDomainTypeInfo

domainTypeInfo fileDomainTypeInfo

domainTypeInfo rcDomainTypeInfo

Macros

Typedefs

Functions

Variables

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation

Variable Documentation