Refine the response for bad request.

webcc/http_connection.cc

@@ -75,8 +75,7 @@ void HttpConnection::OnRead(boost::system::error_code ec, std::size_t length) {
   if (!request_parser_.Parse(buffer_.data(), length)) {
     // Bad request.
     LOG_ERRO("Failed to parse HTTP request.");
-    response_ = HttpResponse::Fault(http::Status::kBadRequest);
-    DoWrite();
+    SendResponse(http::Status::kBadRequest);
     return;
   }
 
@@ -117,8 +116,8 @@ void HttpConnection::OnWrite(boost::system::error_code ec, std::size_t length) {
     LOG_INFO("Response has been sent back, length: %u.", length);
 
     if (request_->IsConnectionKeepAlive()) {
-      LOG_INFO("The client asked for keep-alive connection.");
-      LOG_INFO("Continue to read next request...");
+      LOG_INFO("The client asked for a keep-alive connection.");
+      LOG_INFO("Continue to read the next request...");
       Start();
     } else {
       Shutdown();

webcc/http_response.cc

@@ -66,17 +66,4 @@ bool HttpResponse::Prepare() {
   return true;
 }
 
-HttpResponsePtr HttpResponse::Fault(http::Status status) {
-  assert(status != http::Status::kOK);
-
-  auto response = std::make_shared<HttpResponse>(status);
-
-  // TODO
-  response->SetHeader(http::headers::kConnection, "Close");
-
-  //response->Prepare();
-
-  return response;
-}
-
 }  // namespace webcc

webcc/http_response.h

@@ -25,10 +25,7 @@ public:
 
   // Set start line according to status code.
   bool Prepare() final;
-
-  // Get a fault response when HTTP status is not OK.
-  static HttpResponsePtr Fault(http::Status status);
-
+  
 private:
   int status_;
 };