return « Socket « C Q&A

1. Why is it assumed that send may return with less than requested data transmitted on a blocking socket?    stackoverflow.com

The standard method to send data on a stream socket has always been to call send with a chunk of data to write, check the return value to see if all ...

2. With C TCP sockets, can 'send' return zero?    stackoverflow.com

Is it ever possible for the C send function to return zero when using TCP sockets? The man page just says that it will return the number of bytes sent, but ...

3. socket() returns -1    bytes.com

4. Socket read in C returned a negative result    forums.devshed.com

That assumes the server (the application at the other end of the socket) runs continually and the connection between your application and the server is undisturbed. If something happens to change that while doing a read() (eg the server closes the connection) a common result is a timeout. That's one reason to return recv() over read() ... it gives your application ...