From caa6a203ed978a8dfafd5fa09393267c81b7edad Mon Sep 17 00:00:00 2001
From: Cameron Gutman <aicommander@gmail.com>
Date: Sun, 29 Jun 2014 00:53:37 -0700
Subject: [PATCH] Start RTSP handshake work (pending RTSPLib integration)

---
 limelight-common/Connection.c                 | 20 +++---
 limelight-common/Limelight-internal.h         |  3 +
 limelight-common/Limelight.h                  |  2 +-
 limelight-common/RtspConnection.c             | 63 +++++++++++++++++++
 limelight-common/limelight-common.vcxproj     |  1 +
 .../limelight-common.vcxproj.filters          |  3 +
 6 files changed, 81 insertions(+), 11 deletions(-)
 create mode 100644 limelight-common/RtspConnection.c

diff --git a/limelight-common/Connection.c b/limelight-common/Connection.c
index e7655e8..45d1161 100644
--- a/limelight-common/Connection.c
+++ b/limelight-common/Connection.c
@@ -7,7 +7,7 @@ static CONNECTION_LISTENER_CALLBACKS ListenerCallbacks;
 static const char* stageNames[STAGE_MAX] = {
 	"none",
 	"platform initialization",
-	"handshake",
+	"RTSP handshake",
 	"control stream initialization",
 	"video stream initialization",
 	"audio stream initialization",
@@ -71,9 +71,9 @@ void LiStopConnection(void) {
 		stage--;
 		Limelog("done\n");
 	}
-	if (stage == STAGE_HANDSHAKE) {
-		Limelog("Terminating handshake...");
-		terminateHandshake();
+	if (stage == STAGE_RTSP_HANDSHAKE) {
+		Limelog("Terminating RTSP handshake...");
+		terminateRtspHandshake();
 		stage--;
 		Limelog("done\n");
 	}
@@ -112,17 +112,17 @@ int LiStartConnection(IP_ADDRESS host, PSTREAM_CONFIGURATION streamConfig, PCONN
 	ListenerCallbacks.stageComplete(STAGE_PLATFORM_INIT);
 	Limelog("done\n");
 
-	Limelog("Starting handshake...");
-	ListenerCallbacks.stageStarting(STAGE_HANDSHAKE);
-	err = performHandshake(host);
+	Limelog("Starting RTSP handshake...");
+	ListenerCallbacks.stageStarting(STAGE_RTSP_HANDSHAKE);
+	err = performRtspHandshake(host, streamConfig);
 	if (err != 0) {
 		Limelog("failed: %d\n", err);
-		ListenerCallbacks.stageFailed(STAGE_HANDSHAKE, err);
+		ListenerCallbacks.stageFailed(STAGE_RTSP_HANDSHAKE, err);
 		goto Cleanup;
 	}
 	stage++;
-	LC_ASSERT(stage == STAGE_HANDSHAKE);
-	ListenerCallbacks.stageComplete(STAGE_HANDSHAKE);
+	LC_ASSERT(stage == STAGE_RTSP_HANDSHAKE);
+	ListenerCallbacks.stageComplete(STAGE_RTSP_HANDSHAKE);
 	Limelog("done\n");
 
 	Limelog("Initializing control stream...");
diff --git a/limelight-common/Limelight-internal.h b/limelight-common/Limelight-internal.h
index b58dfef..28d536b 100644
--- a/limelight-common/Limelight-internal.h
+++ b/limelight-common/Limelight-internal.h
@@ -17,6 +17,9 @@ void connectionDetectedFrameLoss(int startFrame, int endFrame);
 void connectionReceivedFrame(int frameIndex);
 void connectionLostPackets(int lastReceivedPacket, int nextReceivedPacket);
 
+int performRtspHandshake(IP_ADDRESS addr, PSTREAM_CONFIGURATION streamConfigPtr);
+void terminateRtspHandshake(void);
+
 void initializeVideoDepacketizer(int pktSize);
 void destroyVideoDepacketizer(void);
 void processRtpPayload(PNV_VIDEO_PACKET videoPacket, int length);
diff --git a/limelight-common/Limelight.h b/limelight-common/Limelight.h
index b549057..d162cc5 100644
--- a/limelight-common/Limelight.h
+++ b/limelight-common/Limelight.h
@@ -55,7 +55,7 @@ typedef struct _AUDIO_RENDERER_CALLBACKS {
 // Use LiGetStageName() for stable stage names
 #define STAGE_NONE 0
 #define STAGE_PLATFORM_INIT 1
-#define STAGE_HANDSHAKE 2
+#define STAGE_RTSP_HANDSHAKE 2
 #define STAGE_CONTROL_STREAM_INIT 3
 #define STAGE_VIDEO_STREAM_INIT 4
 #define STAGE_AUDIO_STREAM_INIT 5
diff --git a/limelight-common/RtspConnection.c b/limelight-common/RtspConnection.c
new file mode 100644
index 0000000..7dcc300
--- /dev/null
+++ b/limelight-common/RtspConnection.c
@@ -0,0 +1,63 @@
+#include "Limelight-internal.h"
+
+static SOCKET sock = INVALID_SOCKET;
+
+#define RTSP_MAX_RESP_SIZE 1024
+
+// FIXME defs
+static void* transactRtspMessage(IP_ADDRESS addr, void* message) {
+	int err;
+	char responseBuffer[RTSP_MAX_RESP_SIZE];
+	int offset;
+	void* responseMsg = NULL;
+
+	sock = connectTcpSocket(addr, 48010);
+	if (sock == INVALID_SOCKET) {
+		return NULL;
+	}
+	enableNoDelay(sock);
+
+	char* serializedMessage = NULL; // FIXME
+	int messageLen = 0; // FIXME
+
+	// Send our message
+	err = send(sock, serializedMessage, messageLen, 0);
+	if (err == SOCKET_ERROR) {
+		goto Exit;
+	}
+
+	// Read the response until the server closes the connection
+	offset = 0;
+	for (;;) {
+		err = recv(sock, &responseBuffer[offset], RTSP_MAX_RESP_SIZE - offset, 0);
+		if (err <= 0) {
+			// Done reading
+			break;
+		}
+		offset += err;
+
+		// Warn if the RTSP message is too big
+		if (offset == RTSP_MAX_RESP_SIZE) {
+			Limelog("RTSP message too long");
+			goto Exit;
+		}
+	}
+
+	responseMsg = NULL; // FIXME
+
+Exit:
+	closesocket(sock);
+	sock = INVALID_SOCKET;
+	return responseMsg;
+}
+
+void terminateRtspHandshake(void) {
+	if (sock != INVALID_SOCKET) {
+		closesocket(sock);
+		sock = INVALID_SOCKET;
+	}
+}
+
+int performRtspHandshake(IP_ADDRESS addr, PSTREAM_CONFIGURATION streamConfigPtr) {
+	return 0;
+}
\ No newline at end of file
diff --git a/limelight-common/limelight-common.vcxproj b/limelight-common/limelight-common.vcxproj
index bcc43a2..d4eae93 100644
--- a/limelight-common/limelight-common.vcxproj
+++ b/limelight-common/limelight-common.vcxproj
@@ -135,6 +135,7 @@
     <ClCompile Include="LinkedBlockingQueue.c" />
     <ClCompile Include="PlatformSockets.c" />
     <ClCompile Include="PlatformThreads.c" />
+    <ClCompile Include="RtspConnection.c" />
     <ClCompile Include="SdpGenerator.c" />
     <ClCompile Include="VideoDepacketizer.c" />
     <ClCompile Include="VideoStream.c" />
diff --git a/limelight-common/limelight-common.vcxproj.filters b/limelight-common/limelight-common.vcxproj.filters
index 90f998a..bbb4231 100644
--- a/limelight-common/limelight-common.vcxproj.filters
+++ b/limelight-common/limelight-common.vcxproj.filters
@@ -48,6 +48,9 @@
     <ClCompile Include="SdpGenerator.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="RtspConnection.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="PlatformSockets.h">