Merge pull request #45 from WebAssembly/fix-new-result

Make new request/response functions fallible

Author: lukewagner

proxy.md

@@ -855,7 +855,7 @@ be used.</p>
 </ul>
 <h5>Return values</h5>
 <ul>
-<li><a name="new_outgoing_request.0"></a> <a href="#outgoing_request"><a href="#outgoing_request"><code>outgoing-request</code></a></a></li>
+<li><a name="new_outgoing_request.0"></a> result&lt;<a href="#outgoing_request"><a href="#outgoing_request"><code>outgoing-request</code></a></a>, <a href="#error"><a href="#error"><code>error</code></a></a>&gt;</li>
 </ul>
 <h4><a name="outgoing_request_write"><code>outgoing-request-write: func</code></a></h4>
 <h5>Params</h5>
@@ -926,7 +926,7 @@ be used.</p>
 </ul>
 <h5>Return values</h5>
 <ul>
-<li><a name="new_outgoing_response.0"></a> <a href="#outgoing_response"><a href="#outgoing_response"><code>outgoing-response</code></a></a></li>
+<li><a name="new_outgoing_response.0"></a> result&lt;<a href="#outgoing_response"><a href="#outgoing_response"><code>outgoing-response</code></a></a>, <a href="#error"><a href="#error"><code>error</code></a></a>&gt;</li>
 </ul>
 <h4><a name="outgoing_response_write"><code>outgoing-response-write: func</code></a></h4>
 <h5>Params</h5>

wit/types.wit

@@ -111,7 +111,7 @@ interface types {
     scheme: option<scheme>,
     authority: option<string>,
     headers: headers
-  ) -> outgoing-request
+  ) -> result<outgoing-request, error>
   outgoing-request-write: func(request: outgoing-request) -> result<outgoing-stream>
 
   // Additional optional parameters that can be set when making a request.
@@ -164,7 +164,7 @@ interface types {
   new-outgoing-response: func(
     status-code: status-code,
     headers: headers
-  ) -> outgoing-response
+  ) -> result<outgoing-response, error>
   outgoing-response-write: func(response: outgoing-response) -> result<outgoing-stream>
 
   // The following block defines a special resource type used by the