stream_listen :: Quanser C Functions

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stream_listen

Establishes a server stream which listens on the given URI.

Description

This function establishes a server stream which listens on the given URI. The URI specifies the protocol, address, port and options associated with the server stream. The Stream API uses the protocol to load a protocol-specific driver. For example:

tcpip://localhost:17000	-	listen on port 17000 using TCP/IP
shmem://mymemory:1?bufsize=8192	-	listen via shared memory buffer. Use 8K buffers by default.
pipe:mypipe?bufsize=4096	-	listen via a named pipe. Use 4K buffers for the pipe.

Prototype

t_error
stream_listen(const char * uri, t_boolean non_blocking, t_stream * server_stream);

Parameters

const char * uri

A URI indicating the stream on which to listen.

t_boolean non_blocking

Set to true (1) to prevent stream_accept calls from blocking.

t_stream * server_stream

A pointer to a t_stream variable in which the server stream handle will be stored.

Return value

Returns 0 on success. If an error occurs then a negative error code is returned.

Error codes

-QERR_NON_BLOCKING_NOT_SUPPORTED

Non-blocking mode is not supported by the selected protocol.

Requirements

Include Files	Libraries
quanser_stream.h	quanser_communications.lib;quanser_runtime.lib;quanser_common.lib

Examples

const char uri[] = "shmem://foobar:1";
const t_boolean nonblocking = true;

t_stream server;
        
result = stream_listen(uri, nonblocking, &server);
if (result == 0){
    ...
}