* ext/socket: Improve socket exception message to show socket address.

[ruby-core:45617] [Feature #6583] proposed Eric Hodel.

* ext/socket/rubysocket.h (rsock_sys_fail_host_port): Declared.
  (rsock_sys_fail_path): Ditto.
  (rsock_sys_fail_sockaddr): Ditto.

* ext/socket/udpsocket.c (udp_connect): Use rsock_sys_fail_host_port.
  (udp_bind): Ditto.
  (udp_send): Ditto.

* ext/socket/init.c (rsock_init_sock): Specify a string for rb_sys_fail
  argument.
  (make_fd_nonblock): Ditto.
  (rsock_s_accept): Ditto.

* ext/socket/ipsocket.c (init_inetsock_internal): Use
  rsock_sys_fail_host_port.

* ext/socket/socket.c (rsock_sys_fail_host_port): Defined.
  (rsock_sys_fail_path): Ditto.
  (rsock_sys_fail_sockaddr): Ditto.
  (setup_domain_and_type): Use rsock_sys_fail_sockaddr.
  (sock_connect_nonblock): Ditto.
  (sock_bind): Ditto.
  (sock_gethostname): Specify a string for rb_sys_fail argument.
  (socket_s_ip_address_list): Ditto.

* ext/socket/basicsocket.c (bsock_shutdown): Specify a string for
  rb_sys_fail argument.
  (bsock_setsockopt): Use rsock_sys_fail_path.
  (bsock_getsockopt): Ditto.
  (bsock_getpeereid): Refine the argument for rb_sys_fail.

* ext/socket/unixsocket.c (rsock_init_unixsock): Use
  rsock_sys_fail_path.
  (unix_path): Ditto.
  (unix_send_io): Ditto.
  (unix_recv_io): Ditto.
  (unix_addr): Ditto.
  (unix_peeraddr): Ditto.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40149 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/socket/test_socket.rb

@@ -70,6 +70,22 @@ class TestSocket < Test::Unit::TestCase
     }
   end
 
+  def test_bind
+    Socket.open(Socket::AF_INET, Socket::SOCK_STREAM, 0) {|bound|
+      bound.bind(Socket.sockaddr_in(0, "127.0.0.1"))
+      addr = bound.getsockname
+      port, = Socket.unpack_sockaddr_in(addr)
+
+      Socket.open(Socket::AF_INET, Socket::SOCK_STREAM, 0) {|s|
+        e = assert_raises(Errno::EADDRINUSE) do
+          s.bind(Socket.sockaddr_in(port, "127.0.0.1"))
+        end
+
+        assert_match "bind(2) for \"127.0.0.1\" port #{port}", e.message
+      }
+    }
+  end
+
   def test_getaddrinfo
     # This should not send a DNS query because AF_UNIX.
     assert_raise(SocketError) { Socket.getaddrinfo("www.kame.net", 80, "AF_UNIX") }

test/socket/test_tcp.rb

@@ -6,6 +6,23 @@ end
 
 
 class TestSocket_TCPSocket < Test::Unit::TestCase
+  def test_initialize_failure
+    s = TCPServer.new("localhost", nil)
+    server_port = s.addr[1]
+
+    c = TCPSocket.new("localhost", server_port)
+    client_port = c.addr[1]
+
+    begin
+      # TCPServer.new uses SO_REUSEADDR so we must create a failure on the
+      # local address.
+      TCPSocket.new("localhost", server_port, "localhost", client_port)
+      flunk "expected SystemCallError"
+    rescue SystemCallError => e
+      assert_match "for \"localhost\" port #{client_port}", e.message
+    end
+  end
+
   def test_recvfrom
     svr = TCPServer.new("localhost", 0)
     th = Thread.new {

test/socket/test_udp.rb

@@ -36,4 +36,30 @@ class TestSocket_UDPSocket < Test::Unit::TestCase
       s.bind(host, 2000)
     }
   end
+
+  def test_bind_addrinuse
+    host = "127.0.0.1"
+    port = 2001
+
+    in_use = UDPSocket.new
+    in_use.bind(host, port)
+
+    s = UDPSocket.new
+    
+    e = assert_raises(Errno::EADDRINUSE) do
+      s.bind(host, port)
+    end
+
+    assert_match "bind(2) for \"#{host}\" port #{port}", e.message
+  end
+
+  def test_send_too_long
+    u = UDPSocket.new
+
+    e = assert_raises Errno::EMSGSIZE do
+      u.send "\0" * 100_000, 0, "127.0.0.1", 7 # echo
+    end
+
+    assert_match 'for "127.0.0.1" port 7', e.message
+  end
 end if defined?(UDPSocket)