wt/mongoose
1
0 Fork 0
mirror of https://github.com/cesanta/mongoose.git synced 2026-10-21 11:30:01 +00:00
Code Issues Packages Projects Releases Wiki Activity

implemented tcp retransmission

Browse Source
This commit is contained in:
robert committed 2023-07-11 06:20:47 -04:00
1 parent 8114443e97
commit 320da5e84c
3 files changed
+137 -10
Download Patch File Download Diff File Expand all files Collapse all files

No files matched your search

src/tcpip/tcpip.c
+9 -5
View File
@@ -579,9 +579,11 @@ static void read_conn(struct mg_connection *c, struct pkt *pkt) {
if (s->ack == ack) {
MG_VERBOSE(("ignoring duplicate pkt"));
} else {
// TODO(cpq): peer sent us SEQ which we don't expect. Retransmit
// rather than close this connection
mg_error(c, "SEQ != ACK: %x %x %x", seq, s->ack, ack);
uint32_t rem_ip;
memcpy(&rem_ip, c->rem.ip, sizeof(uint32_t));
MG_DEBUG(("SEQ != ACK: %x %x %x", seq, s->ack, ack));
tx_tcp((struct mg_tcpip_if *) c->mgr->priv, s->mac, rem_ip, TH_ACK, c->loc.port,
c->rem.port, mg_htonl(s->seq), mg_htonl(s->ack), "", 0);
}
} else if (io->size - io->len < pkt->pay.len &&
!mg_iobuf_resize(io, io->len + pkt->pay.len)) {
@@ -598,10 +600,12 @@ static void read_conn(struct mg_connection *c, struct pkt *pkt) {
MG_DEBUG(("%lu SEQ %x -> %x", c->id, mg_htonl(pkt->tcp->seq), s->ack));
// Advance ACK counter
s->ack = (uint32_t) (mg_htonl(pkt->tcp->seq) + pkt->pay.len);
#if 0
#ifdef MIP_TEST
// Send ACK immediately
uint32_t rem_ip;
memcpy(&rem_ip, c->rem.ip, sizeof(uint32_t));
MG_DEBUG((" imm ACK", c->id, mg_htonl(pkt->tcp->seq), s->ack));
tx_tcp((struct mg_tcpip_if *) c->mgr->priv, c->rem.ip, TH_ACK, c->loc.port,
tx_tcp((struct mg_tcpip_if *) c->mgr->priv, s->mac, rem_ip, TH_ACK, c->loc.port,
c->rem.port, mg_htonl(s->seq), mg_htonl(s->ack), "", 0);
#else
// if not already running, setup a timer to send an ACK later