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diff -ur libvncserver-LibVNCServer-0.9.11/libvncserver/main.c libvncserver-LibVNCServer-0.9.11+iPhone/libvncserver/main.c
--- libvncserver-LibVNCServer-0.9.11/libvncserver/main.c 2016-12-30 03:01:28.000000000 -1000
+++ libvncserver-LibVNCServer-0.9.11+iPhone/libvncserver/main.c 2018-08-29 11:20:52.000000000 -1000
@@ -517,24 +517,26 @@
struct timeval tv;
int n;
- if (cl->sock == -1) {
+ int sock = cl->sock;
+
+ if (sock == -1) {
/* Client has disconnected. */
break;
}
FD_ZERO(&rfds);
- FD_SET(cl->sock, &rfds);
+ FD_SET(sock, &rfds);
FD_ZERO(&efds);
- FD_SET(cl->sock, &efds);
+ FD_SET(sock, &efds);
/* Are we transferring a file in the background? */
FD_ZERO(&wfds);
if ((cl->fileTransfer.fd!=-1) && (cl->fileTransfer.sending==1))
- FD_SET(cl->sock, &wfds);
+ FD_SET(sock, &wfds);
tv.tv_sec = 60; /* 1 minute */
tv.tv_usec = 0;
- n = select(cl->sock + 1, &rfds, &wfds, &efds, &tv);
+ n = select(sock + 1, &rfds, &wfds, &efds, &tv);
if (n < 0) {
rfbLogPerror("ReadExact: select");
break;
@@ -546,10 +548,10 @@
}
/* We have some space on the transmit queue, send some data */
- if (FD_ISSET(cl->sock, &wfds))
+ if (FD_ISSET(sock, &wfds))
rfbSendFileTransferChunk(cl);
- if (FD_ISSET(cl->sock, &rfds) || FD_ISSET(cl->sock, &efds))
+ if (FD_ISSET(sock, &rfds) || FD_ISSET(cl->sock, &efds))
{
#ifdef LIBVNCSERVER_WITH_WEBSOCKETS
do {
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