Solvline Eddy DK - Manual (Page 109)

Eddy DK Programmer Guide
109
SB_ListenTcp
Function Wait for connection to TCP socket
Format Int SB_ListenTcp (int Socket_No, Int Tx_Size, int Rx_Size);
Parameter Socket_No
Tx_Bytes
Rx_Bytes TCP socket number to wait for connection
Tx buffer size of the socket (in K bytes)
Rx buffer size of the socket (in K bytes)
Returns -1 ~ N Handle number of the TCP socket waiting for
connection
-1: Socket connection waiting failure
N: Handle number of the TCP socket waiting for
connection
Notice As a non-blocking function, this function requests connection and
returns without waiting for connection. SB_AcceptTcp will handle waiting
for connection.
Tx,Rx_Size are size of the socket buffer size. These can be set from 1 to
64.
If it is set to number smaller than 1, size will 4kbytes as default; number
larger than 64 will set size of the buffer to 64kbytes as default.
SB_AcceptTcp
Function Waits for network connection of TCP socket handle.
Format Int SB_AcceptTcp (int Socket_No, int wait_msec);
Parameter Socket_No
wait_msec TCP socket handle number to wait for connection.
(Return value of SB_ListenTcp)
Connection standby time (in msec)
Returns -1 ~ N New handle number of connected TCP socket.
-1: Socket error
0: Waiting for connection
N: New handle number of connected TCP socket.
Notice When new handle number is given after connection is made, previous
handle that has been waiting will be closed inside this function.