> I've got an interface with multiple IP addresses and I'm looking to > make HTTP requests from the non-primary IP. > > How would I pull that off? In principle, you 'bind' the socket to the correct local IP address before you 'connect' Unfortunately, TCPSocket#open (or #new) does the connect before it gives you a chance to bind. So you'll need to replace TCPSocket.open with something messy along the lines of s = Socket.new(Socket::PF_INET, Socket::SOCK_STREAM, Socket::IPPROTO_TCP) s.bind(Socket.pack_sockaddr_in(0, "126.96.36.199")) # chosen local IP s.connect(Socket.pack_sockaddr_in(80, "pragprog.com")) Test this and check that it works at the TCP layer, e.g. by adding s.write("GET / HTTP/1.0\r\n\r\n") puts s.read If that works, then unfortunately net/http.rb doesn't seem to have a suitable hook, so copy the source and look for TCPSocket.open to see where you need to modify it. Good luck, Brian.
on 2007-06-29 21:31