experimental pluggable transport support (#436)

this change adds a `--http=plugin` mode where we support pluggable transports. Currently this defaults to a barebones blocking winsock implementation but there is also support for dynamic loading of transport plugins, which will be further developed in the near future.

1 files changed, 34 insertions, 1 deletions

diff --git a/src/zenhttp/httpserver.cpp b/src/zenhttp/httpserver.cpp
index a98a3c9bb..523befa72 100644
--- a/src/zenhttp/httpserver.cpp
+++ b/src/zenhttp/httpserver.cpp
@@ -6,6 +6,13 @@
 #include "httpnull.h"
 #include "httpsys.h"
 
+#include "zenhttp/httpplugin.h"
+
+#if ZEN_WITH_PLUGINS
+#	include "dlltransport.h"
+#	include "winsocktransport.h"
+#endif
+
 #include <zencore/compactbinary.h>
 #include <zencore/compactbinarybuilder.h>
 #include <zencore/compactbinarypackage.h>
@@ -711,6 +718,7 @@ enum class HttpServerClass
 {
 	kHttpAsio,
 	kHttpSys,
+	kHttpPlugin,
 	kHttpNull
 };
 
@@ -723,7 +731,7 @@ CreateHttpServer(const HttpServerConfig& Config)
 
 #if ZEN_WITH_HTTPSYS
 	Class = HttpServerClass::kHttpSys;
-#elif 1
+#else
 	Class = HttpServerClass::kHttpAsio;
 #endif
 
@@ -735,6 +743,10 @@ CreateHttpServer(const HttpServerConfig& Config)
 	{
 		Class = HttpServerClass::kHttpSys;
 	}
+	else if (Config.ServerClass == "plugin"sv)
+	{
+		Class = HttpServerClass::kHttpPlugin;
+	}
 	else if (Config.ServerClass == "null"sv)
 	{
 		Class = HttpServerClass::kHttpNull;
@@ -747,6 +759,27 @@ CreateHttpServer(const HttpServerConfig& Config)
 			ZEN_INFO("using asio HTTP server implementation");
 			return Ref<HttpServer>(new HttpAsioServer(Config.ThreadCount));
 
+#if ZEN_WITH_PLUGINS
+		case HttpServerClass::kHttpPlugin:
+			{
+				ZEN_INFO("using plugin HTTP server implementation");
+				Ref<HttpPluginServer> Server{new HttpPluginServer(Config.ThreadCount)};
+
+#	if 1
+				Ref<TransportPluginInterface> WinsockPlugin{CreateSocketTransportPlugin(1337, Config.ThreadCount)};
+				Server->AddPlugin(WinsockPlugin);
+#	endif
+
+#	if 0
+				Ref<DllTransportPlugin> DllPlugin{new DllTransportPlugin(1337, Config.ThreadCount)};
+				DllPlugin->LoadDll("winsock");
+				Server->AddPlugin(DllPlugin);
+#	endif
+
+				return Server;
+			}
+#endif
+
 #if ZEN_WITH_HTTPSYS
 		case HttpServerClass::kHttpSys:
 			ZEN_INFO("using http.sys server implementation");