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-rw-r--r--rfbserver.c35
1 files changed, 23 insertions, 12 deletions
diff --git a/rfbserver.c b/rfbserver.c
index 94533f3..b938d91 100644
--- a/rfbserver.c
+++ b/rfbserver.c
@@ -709,6 +709,15 @@ rfbProcessClientNormalMessage(cl)
cl->enableLastRectEncoding = TRUE;
}
break;
+#ifdef BACKCHANNEL
+ case rfbEncodingBackChannel:
+ if (!cl->enableBackChannel) {
+ rfbLog("Enabling BackChannel protocol extension for "
+ "client %s\n", cl->host);
+ cl->enableBackChannel = TRUE;
+ }
+ break;
+#endif
default:
if ( enc >= (CARD32)rfbEncodingCompressLevel0 &&
enc <= (CARD32)rfbEncodingCompressLevel9 ) {
@@ -1470,18 +1479,20 @@ void rfbSendBackChannel(rfbScreenInfoPtr rfbScreen,char* str,int len)
iterator = rfbGetClientIterator(rfbScreen);
while ((cl = rfbClientIteratorNext(iterator)) != NULL) {
- sct.type = rfbBackChannel;
- sct.length = Swap32IfLE(len);
- if (WriteExact(cl, (char *)&sct,
- sz_rfbServerCutTextMsg) < 0) {
- rfbLogPerror("rfbSendServerCutText: write");
- rfbCloseClient(cl);
- continue;
- }
- if (WriteExact(cl, str, len) < 0) {
- rfbLogPerror("rfbSendServerCutText: write");
- rfbCloseClient(cl);
- }
+ if (cl->enableBackChannel) {
+ sct.type = rfbBackChannel;
+ sct.length = Swap32IfLE(len);
+ if (WriteExact(cl, (char *)&sct,
+ sz_rfbBackChannelMsg) < 0) {
+ rfbLogPerror("rfbSendBackChannel: write");
+ rfbCloseClient(cl);
+ continue;
+ }
+ if (WriteExact(cl, str, len) < 0) {
+ rfbLogPerror("rfbSendBackChannel: write");
+ rfbCloseClient(cl);
+ }
+ }
}
rfbReleaseClientIterator(iterator);
}