TCP Socket Status

Macros
#define	TCP_ERR_NORMAL   (0)
	No errors.
#define	TCP_ERR_TIMEOUT   (-1)
	Socket timed out.
#define	TCP_ERR_NOCON   (-2)
	No connection exists.
#define	TCP_ERR_CLOSING   (-3)
	Socket is in the process of closing.
#define	TCP_ERR_NOSUCH_SOCKET   (-4)
	No such socket exists.
#define	TCP_ERR_NONE_AVAIL   (-5)
	No new sockets are available.
#define	TCP_ERR_CON_RESET   (-6)
	Connection has been reset.
#define	TCP_ERR_CON_ABORT   (-7)
	Connection has been aborted.

Detailed Description

#include< tcp.h >

The current status of a TCP socket. When calling API functions that return a file descriptor, such as listen(), accept(), connect(), etc., a negative value represents an error, while a value greater than 0 represents the file descriptor number.