From c0e012e4d26f2bc38ee5d34c3ee75e94cc799767 Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Sat, 29 Mar 2014 14:53:24 -0500
Subject: Add an example how to connect to an UltraVNC-style repeater

UltraVNC offers an add-on to connect clients and servers via IDs with
a so-called repeater (e.g. to bridge firewalled clients and servers):

	http://www.uvnc.com/products/uvnc-repeater.html

This example demonstrates how to use that feature with a
LibVNCServer-based server.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 examples/Makefile.am |  2 +-
 examples/repeater.c  | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+), 1 deletion(-)
 create mode 100644 examples/repeater.c

(limited to 'examples')

diff --git a/examples/Makefile.am b/examples/Makefile.am
index 29d3774..6a7d656 100644
--- a/examples/Makefile.am
+++ b/examples/Makefile.am
@@ -23,5 +23,5 @@ noinst_HEADERS=radon.h rotatetemplate.c
 noinst_PROGRAMS=example pnmshow regiontest pnmshow24 fontsel \
 	vncev storepasswd colourmaptest simple simple15 $(MAC) \
 	$(FILETRANSFER) backchannel $(BLOOPTEST) camera rotate \
-	zippy
+	zippy repeater
 
diff --git a/examples/repeater.c b/examples/repeater.c
new file mode 100644
index 0000000..ae65e25
--- /dev/null
+++ b/examples/repeater.c
@@ -0,0 +1,62 @@
+/* This example shows how to connect to an UltraVNC repeater. */
+
+#include <rfb/rfb.h>
+
+int main(int argc,char** argv)
+{
+  char *repeaterHost;
+  int repeaterPort, sock;
+  char id[250];
+  rfbClientPtr cl;
+
+  int i,j;
+  uint16_t* f;
+
+  /* Parse command-line arguments */
+  if (argc < 3) {
+    fprintf(stderr,
+      "Usage: %s <id> <repeater-host> [<repeater-port>]\n", argv[0]);
+    exit(1);
+  }
+  snprintf(id, sizeof(id) - 1, "ID:%s", argv[1]);
+  repeaterHost = argv[2];
+  repeaterPort = argc < 4 ? 5500 : atoi(argv[3]);
+
+  /* The initialization is identical to simple15.c */
+  rfbScreenInfoPtr server=rfbGetScreen(&argc,argv,400,300,5,3,2);
+  if(!server)
+    return 0;
+  server->frameBuffer=(char*)malloc(400*300*2);
+  f=(uint16_t*)server->frameBuffer;
+  for(j=0;j<300;j++)
+    for(i=0;i<400;i++)
+      f[j*400+i]=/* red */ ((j*32/300) << 10) |
+		 /* green */ (((j+400-i)*32/700) << 5) |
+		 /* blue */ ((i*32/400));
+
+  /* Now for the repeater-specific part: */
+  server->port = -1; /* do not listen on any port */
+  server->ipv6port = -1; /* do not listen on any port */
+
+  sock = rfbConnectToTcpAddr(repeaterHost, repeaterPort);
+  if (sock < 0) {
+    perror("connect to repeater");
+    return 1;
+  }
+  if (write(sock, id, sizeof(id)) != sizeof(id)) {
+    perror("writing id");
+    return 1;
+  }
+  cl = rfbNewClient(server, sock);
+  if (!cl) {
+    perror("new client");
+    return 1;
+  }
+  cl->reverseConnection = 0;
+
+  /* Run the server */
+  rfbInitServer(server);
+  rfbRunEventLoop(server,-1,FALSE);
+
+  return 0;
+}
-- 
cgit v1.2.3


From 71d0f9b06fd3f574d79dcf9593fb8b6299c6143d Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Sat, 29 Mar 2014 15:03:12 -0500
Subject: Repeater example: show how to shut down cleanly

Since we connected to the client through the repeater, chances are
that we want this server shut down once the client disconnected.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 examples/repeater.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'examples')

diff --git a/examples/repeater.c b/examples/repeater.c
index ae65e25..cf0350f 100644
--- a/examples/repeater.c
+++ b/examples/repeater.c
@@ -2,6 +2,11 @@
 
 #include <rfb/rfb.h>
 
+static void clientGone(rfbClientPtr cl)
+{
+  rfbShutdownServer(cl->screen, TRUE);
+}
+
 int main(int argc,char** argv)
 {
   char *repeaterHost;
@@ -53,6 +58,7 @@ int main(int argc,char** argv)
     return 1;
   }
   cl->reverseConnection = 0;
+  cl->clientGoneHook = clientGone;
 
   /* Run the server */
   rfbInitServer(server);
-- 
cgit v1.2.3