http_proxy: multiple CONNECT with hyper done better

Enabled test 206

Closes #7888

lib/http_proxy.c

@@ -284,8 +284,7 @@ static CURLcode CONNECT(struct Curl_easy *data,
         /* This only happens if we've looped here due to authentication
            reasons, and we don't really use the newly cloned URL here
            then. Just free() it. */
-      free(data->req.newurl);
-      data->req.newurl = NULL;
+      Curl_safefree(data->req.newurl);
 
       /* initialize send-buffer */
       Curl_dyn_init(req, DYN_HTTP_REQUEST);
@@ -805,6 +804,14 @@ static CURLcode CONNECT(struct Curl_easy *data,
         goto error;
       }
 
+      infof(data, "Establish HTTP proxy tunnel to %s:%d",
+            hostname, remote_port);
+
+        /* This only happens if we've looped here due to authentication
+           reasons, and we don't really use the newly cloned URL here
+           then. Just free() it. */
+      Curl_safefree(data->req.newurl);
+
       result = CONNECT_host(data, conn, hostname, remote_port,
                             &hostheader, &host);
       if(result)
@@ -945,6 +952,14 @@ static CURLcode CONNECT(struct Curl_easy *data,
     default:
       break;
     }
+
+    /* If we are supposed to continue and request a new URL, which basically
+     * means the HTTP authentication is still going on so if the tunnel
+     * is complete we start over in INIT state */
+    if(data->req.newurl && (TUNNEL_COMPLETE == s->tunnel_state)) {
+      infof(data, "CONNECT request done, loop to make another");
+      connect_init(data, TRUE); /* reinit */
+    }
   } while(data->req.newurl);
 
   result = CURLE_OK;

tests/data/DISABLED

@@ -40,7 +40,6 @@
 # hyper support remains EXPERIMENTAL as long as there's a test number
 # listed below
 %if hyper
-206
 207
 209
 213