SOCKET_ACCEPT Function

Waits for a connection on a socket.

A socket handle, usually the value returned by SOCKET_INIT. This handle represents the socket on which the server listens for a client connection.

Keywords

None.

Returned Value

connection

Another socket handle. This handle represents the actual socket connection to the client.

Discussion

This routine blocks the currently running application until a socket connection is received from the client.

The input parameter, socket, must be a value returned from either SOCKET_INIT or SOCKET CONNECT.

SOCKET_ACCEPT listens on the port represented by the input parameter, socket. Immediately upon making a connection, a new socket is assigned to handle the communication flow. This new socket is represented by the returned value connection.

Example

The following simple server program uses SOCKET_ACCEPT to listen for client connections. This program simply prints a string sent from the client.

PRO SERVER
port = 1500
    socket = SOCKET_INIT(port)
    connection = SOCKET_ACCEPT(socket)
    data = BYTARR(15)
    nbytes = SOCKET_READ(connection,data)
    PRINT, 'SERVER received: ', STRING(data)
    SOCKET_CLOSE, connection
    SOCKET_CLOSE, socket 
END