wsd: http: support sending http::Response directly to the socket

The Socket now accepts http::Response and
serializes it before sending it.

Change-Id: Id36e2d91b21d168da72ccdbd7e509ec08021b78e
Signed-off-by: Ashod Nakashian <ashod.nakashian@collabora.co.uk>

net/Socket.cpp

@@ -38,6 +38,7 @@
 #include <net/SslSocket.hpp>
 #endif
 #include "WebSocketHandler.hpp"
+#include <net/HttpRequest.hpp>
 
 // Bug in pre C++17 where static constexpr must be defined. Fixed in C++17.
 constexpr std::chrono::microseconds SocketPoll::DefaultPollTimeoutMicroS;
@@ -596,6 +597,12 @@ void StreamSocket::send(Poco::Net::HTTPResponse& response)
     send(oss.str());
 }
 
+void StreamSocket::send(const http::Response& response)
+{
+    response.writeData(_outBuffer);
+    flush();
+}
+
 void SocketPoll::dumpState(std::ostream& os)
 {
     // FIXME: NOT thread-safe! _pollSockets is modified from the polling thread!

net/Socket.hpp

@@ -39,6 +39,10 @@
 
 #define LOG_SOCKET_DATA
 
+namespace http
+{
+class Response;
+}
 namespace Poco
 {
     class MemoryInputStream;
@@ -946,6 +950,10 @@ public:
     /// Adds Date and User-Agent.
     void send(Poco::Net::HTTPResponse& response);
 
+    /// Send an http::Response and flush.
+    /// Does not add any fields to the header.
+    void send(const http::Response& response);
+
     /// Safely flush any outgoing data.
     inline void flush()
     {