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Eliminate extra 'ping' message when server sends data to client which generates a reply
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parent
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commit
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@ -12,6 +12,8 @@ CHANGES:
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- The server now replies to all received queries.
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- Fixed segfault in server when sending version reject.
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- The interval between "pings" from clients is now 5 seconds.
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- Eliminited extra "ping" messages from client to server when server
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sends data and gets data back directly.
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2008-08-06: 0.4.2 "Opened Zone"
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- Applied a few small patches from Maxim Bourmistrov and Gregor Herrmann
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24
src/iodine.c
24
src/iodine.c
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@ -233,10 +233,6 @@ tunnel_dns(int tun_fd, int dns_fd)
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write_tun(tun_fd, out, outlen);
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/* Server may have more data to send me, ask for it */
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if (!is_sending())
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send_ping(dns_fd);
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return read;
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}
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@ -247,12 +243,20 @@ tunnel(int tun_fd, int dns_fd)
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fd_set fds;
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int rv;
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int i;
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int short_ping;
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rv = 0;
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short_ping = 0;
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while (running) {
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tv.tv_sec = 5;
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tv.tv_usec = 0;
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if (short_ping) {
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tv.tv_sec = 0;
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tv.tv_usec = 5000;
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short_ping = 0;
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} else {
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tv.tv_sec = 5;
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tv.tv_usec = 0;
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}
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FD_ZERO(&fds);
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if (!is_sending())
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@ -267,9 +271,9 @@ tunnel(int tun_fd, int dns_fd)
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if (i < 0)
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err(1, "select");
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if (i == 0) /* timeout */
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if (i == 0) { /* timeout */
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send_ping(dns_fd);
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else {
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} else {
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if (FD_ISSET(tun_fd, &fds)) {
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if (tunnel_tun(tun_fd, dns_fd) <= 0)
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continue;
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@ -277,6 +281,10 @@ tunnel(int tun_fd, int dns_fd)
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if (FD_ISSET(dns_fd, &fds)) {
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if (tunnel_dns(tun_fd, dns_fd) <= 0)
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continue;
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/* If we have nothing to send within x ms, send a ping
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* to get more data from server */
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if (!is_sending())
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short_ping = 1;
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}
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}
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}
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