recv() socket function returning data with length as 0

Question

I am having an application which established a socket connection on a port number 5005 with another device(hardware device with a web server).

Now if my hardware de

Answer 1

If recv returns 0 this means that the peer has closed the socket.

recv won't throw because its a C function.

If there's an error recv will return -1. In which case your application has to check the type of error. Note that a return of -1 does not imply that the peer has closed its socket.