* lib/net/http.rb: More descriptive error message when net/http fails

  to connect to a server. Patch by @xaviershay [fix GH-700]
* test/net/http/test_http.rb: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49113 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 1 deletions

diff --git a/lib/net/http.rb b/lib/net/http.rb
index 03823ae735..37b6b82694 100644
--- a/lib/net/http.rb
+++ b/lib/net/http.rb
@@ -876,7 +876,12 @@ module Net   #:nodoc:
 
       D "opening connection to #{conn_address}:#{conn_port}..."
       s = Timeout.timeout(@open_timeout, Net::OpenTimeout) {
-        TCPSocket.open(conn_address, conn_port, @local_host, @local_port)
+        begin
+          TCPSocket.open(conn_address, conn_port, @local_host, @local_port)
+        rescue => e
+          raise e, "Failed to open TCP connection to " +
+            "#{conn_address}:#{conn_port} (#{e.message})"
+        end
       }
       s.setsockopt(Socket::IPPROTO_TCP, Socket::TCP_NODELAY, 1)
       D "opened"