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Hello Cool RPGLE,
Everything works as I expect except the receive part in the server... Rec() returns -1... and the error message says "Requested operation requires a connection"... Any clue why this happening?
Hang on, I'll ask my magic 8 ball. It said "Ask again later." Even my toys won't give me a straight answer. I guess I'll have to figure out my own answer to your question.
The error occurs when you try to call recv() on a socket that's defined as using a connection-oriented protocol such as TCP (AF_INET/SOCK_STREAM) but where the socket isn't connected.
Remember, in a server scenario, there are two (or more) sockets involved. One that listens for connections, and another is created each time you call accept().
Make sure you're calling recv() with the socket returned by accept(), and NOT the one that does the listening.
midrange.com
For example you start your server by doing this:
s1 = socket(AF_INET: SOCK_STREAM: IPPROTO_IP);
... call bind() here ...
... call listen() here...
s2 = accept(s1: *NULL: *OMIT);
The following statement will fail with ENOTCONN (CPE3438, "Requested
operation requires a connection") because s1 isn't connected. (s2 is!)
len = recv(s1: %addr(buf): %size(buf): 0);
However, the following should work fine:
len = recv(s2: %addr(buf): %size(buf): 0);
Another thought... perhaps the program on the other end of the session
has already closed the socket with the close() API? Depending on your
TCP/IP settings, this could potentially cause the same error.
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