c recv() read until newline occurs

Question

I\'m working on writing a IRC bot in C, and have ran into a snag.

In my main function, I create my socket and connect, all that happy stuff. Then I have a (almost) i

Answer 1

TCP doesn't offer any sequencing of that sort. As @bdonlan already said you should implement something like:

• Continuously recv from the socket into a buffer
• On each recv, check if the bytes received contain an \n
• If an \n use everything up to that point from the buffer (and clear it)

I don't have a good feeling about this (I read somewhere that you shouldn't mix low-level I/O with stdio I/O) but you might be able to use fdopen.

All you would need to do is

• use fdopen(3) to associate your socket with a FILE *
• use setvbuf to tell stdio that you want it line-buffered (_IOLBF) as opposed to the default block-buffered.

At this point you should have effectively moved the work from your hands to stdio. Then you could go on using fgets and the like on the FILE *.