multi-socks: fix connect to proxy

When connecting to a socks or similar proxy we do the proxy handshake at
once when we know the TCP connect is completed and we only consider the
"connection" complete after the proxy handshake. This fixes test 564
which is now no longer considered disabled.

Reported by: Dmitri Shubin
Bug: http://curl.haxx.se/mail/lib-2011-04/0127.html

lib/connect.c

@@ -698,7 +698,13 @@ CURLcode Curl_is_connected(struct connectdata *conn,
 
   if(WAITCONN_CONNECTED == rc) {
     if(verifyconnect(sockfd, &error)) {
-      /* we are connected, awesome! */
+      /* we are connected with TCP, awesome! */
+
+      /* see if we need to do any proxy magic first once we connected */
+      code = Curl_connected_proxy(conn);
+      if(code)
+        return code;
+
       conn->bits.tcpconnect = TRUE;
       *connected = TRUE;
       Curl_pgrsTime(data, TIMER_CONNECT); /* connect done */

lib/multi.c

@@ -1141,8 +1141,6 @@ static CURLMcode multi_runsingle(struct Curl_multi *multi,
                                        FIRSTSOCKET,
                                        &connected);
       if(connected) {
-        /* see if we need to do any proxy magic first once we connected */
-        easy->result = Curl_connected_proxy(easy->easy_conn);
 
         if(!easy->result)
           /* if everything is still fine we do the protocol-specific connect

tests/data/DISABLED

@@ -2,5 +2,4 @@
 # test cases are run by runtests.pl. Just add the plain test case numbers, one
 # per line.
 # Lines starting with '#' letters are treated as comments.
-564
 811

tests/data/test564

@@ -47,11 +47,8 @@ PWD
 CWD path
 EPSV
 TYPE I
-SIZE 546
+SIZE 564
-RETR 546
+RETR 564
-EPSV
-SIZE 546
-RETR 546
 QUIT
 </protocol>
 <stdout>