Expose http parse error codes

Currently http parse errors do not expose the error details available from http_parser. This patch exposes the error code as `err.code`.

Author: Smart Template

src/node_http_parser.cc

@@ -432,9 +432,12 @@ class Parser : public ObjectWrap {
  // If there was a parse error in one of the callbacks
  // TODO What if there is an error on EOF?
  if (!parser->parser_.upgrade && nparsed != len) {
+ enum http_errno err = HTTP_PARSER_ERRNO(&parser->parser_);
+
  Local<Value> e = Exception::Error(String::NewSymbol("Parse Error"));
  Local<Object> obj = e->ToObject();
  obj->Set(String::NewSymbol("bytesParsed"), nparsed_obj);
+ obj->Set(String::NewSymbol("code"), String::New(http_errno_name(err)));
  return scope.Close(e);
  } else {
  return scope.Close(nparsed_obj);
@@ -455,9 +458,12 @@ class Parser : public ObjectWrap {
  if (parser->got_exception_) return Local<Value>();
 
  if (rv != 0) {
+ enum http_errno err = HTTP_PARSER_ERRNO(&parser->parser_);
+
  Local<Value> e = Exception::Error(String::NewSymbol("Parse Error"));
  Local<Object> obj = e->ToObject();
  obj->Set(String::NewSymbol("bytesParsed"), Integer::New(0));
+ obj->Set(String::NewSymbol("code"), String::New(http_errno_name(err)));
  return scope.Close(e);
  }
 

test/simple/test-http-client-parse-error.js

@@ -48,6 +48,7 @@ srv.listen(common.PORT, '127.0.0.1', function() {
  console.log('got error from client');
  srv.close();
  assert.ok(e.message.indexOf('Parse Error') >= 0);
+ assert.equal(e.code, 'HPE_INVALID_CONSTANT');
  parseError = true;
  });
 });