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Chapter 7 TCP Library
© National Instruments Corporation 7-5 LabWindows/CVI Standard Libraries
Return Value
status
integer Returns the number of bytes
written, or a negative error code
if an error occurs; Refer to error
codes in Table 7-3.
See Also
ConnectToTCPServer, ClientTCPRead
ConnectToTCPServer
int status = ConnectToTCPServer (unsigned int *conversationHandle,
unsigned int portNumber,
char serverHostName[],
tcpFuncPtr clientCallbackFunction,
void *callbackData, unsigned int timeout);
Purpose
Establishes a conversation between your program and a pre-existing server. Your program
becomes a client.
Parameters
Input
portNumber
unsigned integer Uniquely identifies a server on
a single machine.
serverHostName
character array Can either be the host name or
IP address string.
For example, aaa.bbb.ccc
or 123.456.78.90.
clientCallbackFunction
TCP function
pointer
Pointer to the user callback
function.
callbackData
void pointer User-defined data.
timeout
unsigned integer Timeout in ms.
Output
conversationHandle
unsigned integer Uniquely identifies the
conversation.