C check if client is clsoed

[007fred50]

Hello,

I'm write a C program.

How can i check if the client is closed?

I'm write a TCP Server and Client

Thanks for helping me

[007fred50]

I found out:

just add:

if (recv(newSocket, file, 1024, 0))
{
    
}
else
{
    printf("disconnection from %s:%" PRIu16 "\n", inet_ntoa(newAddr.sin_addr), ntohs(newAddr.sin_port));
    close(newSocket);
    break;
}

[Salem]

Or there is read the manual page.

RETURN VALUE
       These calls return the number of bytes received, or -1 if an error occurred.  In the event of an error, errno is set to indicate the error.

       When a stream socket peer has performed an orderly shutdown, the return value will be 0 (the traditional "end-of-file" return).

       Datagram sockets in various domains (e.g., the UNIX and Internet domains) permit zero-length datagrams.  When such a datagram is received, the return value is 0.

       The value 0 may also be returned if the requested number of bytes to receive from a stream socket was 0.

-1 would also evaluate to true in your code.