Allow timers to be reset.

The function utcp_reset_timers() will reset the retransmit timers of all
connections to zero, so they will fire immediately. The connection timeout will
be reset to the user timeout value, and if the RTO is larger than the
starting RTO, it will be set to the starting RTO.

diff --git a/utcp.c b/utcp.c
index bfd9921f56a23e24c25078e7b73d53768456ca88..02d3c983ba75d3ad1dc9ea1447ebaa64588bf9b5 100644 (file)
--- a/utcp.c
+++ b/utcp.c
@@ -1512,6 +1512,22 @@ void utcp_set_mtu(struct utcp *utcp, uint16_t mtu) {
                utcp->mtu = mtu;
 }
 
+void utcp_reset_timers(struct utcp *utcp) {
+       if(!utcp)
+               return;
+       struct timeval now, then;
+       gettimeofday(&now, NULL);
+       then = now;
+       then.tv_sec += utcp->timeout;
+       for(int i = 0; i < utcp->nconnections; i++) {
+               utcp->connections[i]->rtrx_timeout = now;
+               utcp->connections[i]->conn_timeout = then;
+               utcp->connections[i]->rtt_start.tv_sec = 0;
+       }
+       if(utcp->rto > START_RTO)
+               utcp->rto = START_RTO;
+}
+
 int utcp_get_user_timeout(struct utcp *u) {
        return u ? u->timeout : 0;
 }

diff --git a/utcp.h b/utcp.h
index 8fcb28a0227a26086f574ecfaec185992f23f142..f8fad0c67e3a45b557847ab4f967d1d857070151 100644 (file)
--- a/utcp.h
+++ b/utcp.h
@@ -86,6 +86,8 @@ extern void utcp_set_user_timeout(struct utcp *utcp, int seconds);
 extern uint16_t utcp_get_mtu(struct utcp *utcp);
 extern void utcp_set_mtu(struct utcp *utcp, uint16_t mtu);
 
+extern void utcp_reset_timers(struct utcp *utcp);
+
 // Per-socket options
 
 extern size_t utcp_get_sndbuf(struct utcp_connection *connection);