What can cause a “Resource temporarily unavailable” on sock send() command

“Resource temporarily unavailable” is the error message corresponding to EAGAIN, which means that the operation would have blocked but nonblocking operation was requested. For send(), that could be due to any of: explicitly marking the file descriptor as nonblocking with fcntl(); or passing the MSG_DONTWAIT flag to send(); or setting a send timeout with the SO_SNDTIMEO socket option.

Socket API or library for C++?

Here I’m attempting to answer some of your specific, factual questions to which I have something to contribute. Yes, you can use any C socket library in C++. If it doesn’t work out-of-the-box because the linker reports an undefined reference for the library functions you want to use, then can fix it by editing the .h file(s) of the … Read more

Why does .Net Socket.Disconnect take two minutes?

Timeout in case of Shutdown followed by Disconnect or BeginDisconnect will occur in the case if the other side Socket is not Receiving. Here how it works: Shutdown(SocketShutdown.Send) (or Both) produce SENDING of zero byte to other side. And then if you call Disconnect it will block until other side accept this zero byte packet. This is … Read more

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)