The following is the error code and description of Socket Error:

Socket error 0 – Directly send error

Socket error 10004 – Interrupted function call

Socket error 10013 – Permission denied

Socket error 10014 – Bad address

Socket error 10022 – Invalid argument

Socket error 10024 – Too many open files

Socket error 10035 – Resource temporarily unavailable

Socket error 10036 – Operation now in progress

Socket error 10037 – Operation already in progress

Socket error 10038 – Socket operation on non-socket

Socket error 10039 – Destination address required

Socket error 10040 – Message too long

Socket error 10041 – Protocol wrong type for socket

Socket error 10042 – Bad protocol option

Socket error 10043 – Protocol not supported

Socket error 10044 – Socket type not supported

Socket error 10045 – Operation not supported

Socket error 10046 – Protocol family not supported

Socket error 10047 – Address family not supported by protocol family

Socket error 10048 – Address already in use

Socket error 10049 – Cannot assign requested address

Socket error 10050 – Network is down

Socket error 10051 – Network is unreachable

Socket error 10052 – Network dropped connection on reset

Socket error 10053 – Software caused connection abort

Socket error 10054 – Connection reset by peer

Socket error 10055 – No buffer space available

Socket error 10056 – Socket is already connected

Socket error 10057 – Socket is not connected

Socket error 10058 – Cannot send after socket shutdown

Socket error 10060 – Connection timed out

Socket error 10061 – Connection refused

Socket error 10064 – Host is down

Socket error 10065 – No route to host

Socket error 10067 – Too many processes

Socket error 10091 – Network subsystem is unavailable

Socket error 10092 – WINSOCK.DLL version out of range

Socket error 10093 – Successful WSAStartup not yet performed

Socket error 10094 – Graceful shutdown in progress

Socket error 11001 – Host not found

Socket error 11002 – Non-authoritative host not found

Socket error 11003 – This is a non-recoverable error

Socket error 11004 – Valid name, no data record of requested type

WSAEADDRINUSE (10048) Address already in use

WSAECONNABORTED (10053) Software caused connection abort

WSAECONNREFUSED (10061) Connection refused

WSAECONNRESET (10054) Connection reset by peer

WSAEDESTADDRREQ (10039) Destination address required

WSAEHOSTUNREACH (10065) No route to host

WSAEMFILE (10024) Too many open files

WSAENETDOWN (10050) Network is down

WSAENETRESET (10052) Network dropped connection

WSAENOBUFS (10055) No buffer space available

WSAENETUNREACH (10051) Network is unreachable

WSAETIMEDOUT (10060) Connection timed out

WSAHOST_NOT_FOUND (11001) Host not found

WSASYSNOTREADY (10091) Network sub-system is unavailable

WSANOTINITIALISED (10093) WSAStartup() not performed

WSANO_DATA (11004) Valid name, no data of that type

WSANO_RECOVERY (11003) Non-recoverable query error

WSATRY_AGAIN (11002) Non-authoritative host found

WSAVERNOTSUPPORTED (10092) Wrong WinSock DLL version

10035
1. This error occurs when the non-blocking socket is used and the receiving mode is blocked

10038
1. This error is reported when the invalid socket (invalid_socket) word is read

10048
1. This error is reported when the port and IP address are already occupied

10014
1. Server TCP uses WSAAsyncSelect to receive FD_ACCEPT and other messages. When the window is minimized or not in the active window, when processing the FD_ACCEPT message, use the following code: accept(FSrvSock, @cAddrIn, @addrLen); addrLen is not initialized, resulting in Return the error code, add addrLen := SizeOf(cAddrIn); the problem is solved after initialization.

10040
1. The buffer received during reception is integer, and the sender sends two integers, so this error occurs during reception.