Use ECONNABORTED error code for explicit connection cancelation

Author: clue

README.md

@@ -196,7 +196,7 @@ See also the [first example](examples).
 The `tcp://` scheme can also be omitted.
 Passing any other scheme will reject the promise.
 
-Pending connection attempts can be cancelled by cancelling its pending promise like so:
+Pending connection attempts can be canceled by canceling its pending promise like so:
 
 ```php
 $promise = $connector->connect($uri);
@@ -237,7 +237,7 @@ If you use the low-level `SecureConnector`, then the `tls://` scheme can also
 be omitted.
 Passing any other scheme will reject the promise.
 
-Pending connection attempts can be cancelled by cancelling its pending promise
+Pending connection attempts can be canceled by canceling its pending promise
 as usual.
 
 > Also note how secure TLS connections are in fact entirely handled outside of
@@ -396,7 +396,7 @@ $connector = new React\Socket\Connector($loop, array(
 
 See also the [fourth example](examples).
 
-Pending connection attempts can be cancelled by cancelling its pending promise
+Pending connection attempts can be canceled by canceling its pending promise
 as usual.
 
 > Also note how local DNS resolution is in fact entirely handled outside of this
@@ -494,7 +494,7 @@ $connector->connect('tls://www.google.com:443')->then(function ($stream) {
 
 See also the [third example](examples).
 
-Pending connection attempts can be cancelled by cancelling its pending promise
+Pending connection attempts can be canceled by canceling its pending promise
 as usual.
 
 Proxy chaining can happen on the server side and/or the client side:
@@ -541,7 +541,7 @@ $connector->connect('tcp://google.com:80')->then(function ($stream) {
 
 See also any of the [examples](examples).
 
-Pending connection attempts can be cancelled by cancelling its pending promise
+Pending connection attempts can be canceled by canceling its pending promise
 as usual.
 
 > Also note how connection timeout is in fact entirely handled outside of this

src/Client.php

@@ -179,7 +179,7 @@ function (Exception $e) {
     public function handleConnectedSocks(ConnectionInterface $stream, $host, $port)
     {
         $deferred = new Deferred(function ($_, $reject) {
-            $reject(new RuntimeException('Connection attempt cancelled while establishing socks session'));
+            $reject(new RuntimeException('Connection canceled while establishing SOCKS session (ECONNABORTED)', defined('SOCKET_ECONNABORTED') ? SOCKET_ECONNABORTED : 103));
         });
 
         $reader = new StreamReader();

tests/ClientTest.php

@@ -157,6 +157,6 @@ public function testCancelConnectionDuringSessionWillCloseStream()
         $promise = $this->client->connect('google.com:80');
         $promise->cancel();
 
-        $this->expectPromiseReject($promise);
+        $promise->then(null, $this->expectCallableOnceWithExceptionCode(SOCKET_ECONNABORTED));
     }
 }

tests/ServerTest.php

@@ -138,7 +138,7 @@ public function testConnectWillCancelConnectionIfStreamCloses()
         $promise->then(null, $this->expectCallableOnce());
     }
 
-    public function testConnectWillAbortIfPromiseIsCancelled()
+    public function testConnectWillAbortIfPromiseIsCanceled()
     {
         $stream = $this->getMockBuilder('React\Socket\ConnectionInterface')->getMock();