SystemBase Eddy DK, Руководство программиста

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Eddy DK Programmer Guide
108
SB_AcceptTcpMulti
Function Grants network multiple connection of TCP socket handle waiting for
connection.
Format Int SB_AcceptTcpMulti (int Socket_No, int wait_msec);
Parameter Socket_No
wait_msec TCP socket handle number waiting 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, it will not close
previous handle waiting for connection, granting maximum of 1024 socket
connection.
SB_ReadTcp
Function Read data from connected TCP socket.
Format Int SB_ReadTcp (int Handle, char *Buffer, int Buffer_Size);
Parameter Handle
Buffer
Buffer_Size Handle number of connected TCP socket
Buffer point where packet data to be read will be saved
Size of the buffer to save
Returns -1 ~ N Size of the data read.
-1: Socket error
0: No data was read
N: Length of the data read
Notice When return code is -1, it means the connection is lost with the client so
user has to close TCP socket handle.
SB_CloseTcp
Function Close TCP socket handle.
Format Int SB_CloseTcp (int Handle);
Parameter Handle TCP socket handle number to close
Returns None
Notice This function shuts down socket handle to finish communication and
closes.