Merge branch 'main' into auth

1 files changed, 17 insertions, 0 deletions

diff --git a/zenhttp/httpasio.cpp b/zenhttp/httpasio.cpp
index f2d48200e..55ce867a4 100644
--- a/zenhttp/httpasio.cpp
+++ b/zenhttp/httpasio.cpp
@@ -12,6 +12,7 @@
 ZEN_THIRD_PARTY_INCLUDES_START
 #if ZEN_PLATFORM_WINDOWS
 #	include <conio.h>
+#	include <mstcpip.h>
 #endif
 #include <http_parser.h>
 #include <asio.hpp>
@@ -934,12 +935,26 @@ struct HttpAcceptor
 		m_Acceptor.set_option(asio::ip::v6_only(false));
 		m_Acceptor.set_option(asio::socket_base::reuse_address(true));
 		m_Acceptor.set_option(asio::ip::tcp::no_delay(true));
+		m_Acceptor.set_option(asio::socket_base::receive_buffer_size(128 * 1024));
+		m_Acceptor.set_option(asio::socket_base::send_buffer_size(256 * 1024));
+
 		asio::error_code BindErrorCode;
 		m_Acceptor.bind(asio::ip::tcp::endpoint(asio::ip::address_v6::any(), Port), BindErrorCode);
 		if (BindErrorCode == asio::error::access_denied)
 		{
 			m_Acceptor.bind(asio::ip::tcp::endpoint(asio::ip::address_v6::any(), 0));
 		}
+
+#if ZEN_PLATFORM_WINDOWS
+		// On Windows, loopback connections can take advantage of a faster code path optionally with this flag.
+		// This must be used by both the client and server side, and is only effective in the absence of
+		// Windows Filtering Platform (WFP) callouts which can be installed by security software.
+		// https://docs.microsoft.com/en-us/windows/win32/winsock/sio-loopback-fast-path
+		SOCKET NativeSocket = m_Acceptor.native_handle();
+		int LoopbackOptionValue = 1;
+		DWORD OptionNumberOfBytesReturned = 0;
+		WSAIoctl(NativeSocket, SIO_LOOPBACK_FAST_PATH, &LoopbackOptionValue, sizeof(LoopbackOptionValue), NULL, 0, &OptionNumberOfBytesReturned, 0, 0);
+#endif
 		m_Acceptor.listen();
 	}
 
@@ -969,6 +984,8 @@ struct HttpAcceptor
 				// reference to the callbacks.
 
 				Socket->set_option(asio::ip::tcp::no_delay(true));
+				Socket->set_option(asio::socket_base::receive_buffer_size(128*1024));
+				Socket->set_option(asio::socket_base::send_buffer_size(256*1024));
 
 				auto Conn = std::make_shared<HttpServerConnection>(m_Server, std::move(Socket));
 				Conn->HandleNewRequest();