channels: added sample server code for skel

channels/skel/readme.txt

@@ -4,4 +4,8 @@ To create your own virtual channel plugin, copy this directory
 then change all references of "skel" to your plugin name
 remember, plugin name are 7 chars or less, no spaces or funny chars
 
+server_chan_test.cpp is an example of how to open a channel to the client
+this code needs to be compiled and run on the server in an rdp session
+when connect with a client that has the "skel" plugin loaded
+
 Jay

channels/skel/server_chan_test.cpp

@@ -0,0 +1,60 @@
+// xrdp_chan_test.cpp : Basic test for virtual channel use.
+
+// These headers are required for the windows terminal service calls.
+#include "windows.h"
+#include "wtsapi32.h"
+#include <string>
+
+#define DSIZE 1024
+
+int main()
+{
+	// Initialize the data for send/receive
+	char* data;
+	char* data1;
+	data = (char*)malloc(DSIZE);
+	data1 = (char*)malloc(DSIZE);
+	memset(data, 0xca, DSIZE);
+	memset(data1, 0, DSIZE);
+
+	// Open the skel channel in current session
+	void* channel = WTSVirtualChannelOpenEx(WTS_CURRENT_SESSION, "skel", 0);
+
+	unsigned long written = 0;
+	// Write the data to the channel
+	bool ret = WTSVirtualChannelWrite(channel, data, DSIZE, &written);
+	if (!ret)
+	{
+		long err = GetLastError();
+		printf("error 0x%8.8x\n", err);
+		return 1;
+	}
+
+	ret = WTSVirtualChannelRead(channel, 100, data1, DSIZE, &written);
+	if (!ret)
+	{
+		long err = GetLastError();
+		printf("error 0x%8.8x\n", err);
+		return 1;
+	}
+	if (written != DSIZE)
+	{
+		printf("error read %d\n", written);
+		return 1;
+	}
+
+	ret = WTSVirtualChannelClose(channel);
+	if (memcmp(data, data1, DSIZE) == 0)
+	{
+	}
+	else
+	{
+		printf("error data no match\n");
+		return 1;
+	}
+
+	printf("Success!\n");
+
+	Sleep(2000);
+	return 0;
+}