From: Sean Carley Date: 2001-07-11T00:13:35+09:00 Subject: [ruby-talk:17616] Re: Net/Http problem - connect(2) error on windows /cygdrive/c/ruby/lib/ruby/1.6/net/protocol.rb:507:in `new': Invalid argument - "connect(2)"(Errno::EINVAL) This has been fixed in the development version of ruby. The required change is in socket.c. I don't know how to use patch but here is the fix without patch. In ruby_connect, -- existing: #ifdef EINPROGRESS case EINPROGRESS: -- fix: #if defined __CYGWIN__ { struct timeval tv; tv.tv_sec = 0; tv.tv_usec = 100000; rb_thread_wait_for(tv); } #endif -- existing: #endif