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Initialize acknowledgment number on establishment of outgoing TCP connection.

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Ported change 2432a8ee7d (set expected reception sequence no to zero - to get initial connection to avoid having ack-number other than zero) from uIPv6 to uIPv4.
This commit is contained in:
Oliver Schmidt 2015-10-10 17:41:56 +02:00
parent 43ac818dd2
commit 7d38c48a8b
2 changed files with 11 additions and 6 deletions
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11
core/net/ipv4/uip.c
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@ -436,6 +436,11 @@ uip_connect(const uip_ipaddr_t *ripaddr, uint16_t rport)
conn->snd_nxt[2] = iss[2];
conn->snd_nxt[3] = iss[3];
conn->rcv_nxt[0] = 0;
conn->rcv_nxt[1] = 0;
conn->rcv_nxt[2] = 0;
conn->rcv_nxt[3] = 0;
conn->initialmss = conn->mss = UIP_TCP_MSS;
conn->len = 1; /* TCP length of the SYN is one. */
@ -1367,10 +1372,10 @@ uip_process(uint8_t flag)
uip_connr->len = 1;
/* rcv_nxt should be the seqno from the incoming packet + 1. */
uip_connr->rcv_nxt[3] = BUF->seqno[3];
uip_connr->rcv_nxt[2] = BUF->seqno[2];
uip_connr->rcv_nxt[1] = BUF->seqno[1];
uip_connr->rcv_nxt[0] = BUF->seqno[0];
uip_connr->rcv_nxt[1] = BUF->seqno[1];
uip_connr->rcv_nxt[2] = BUF->seqno[2];
uip_connr->rcv_nxt[3] = BUF->seqno[3];
uip_add_rcv_nxt(1);
/* Parse the TCP MSS option, if present. */

6
core/net/ipv6/uip6.c
View File

@ -1747,10 +1747,10 @@ uip_process(uint8_t flag)
uip_connr->len = 1;
/* rcv_nxt should be the seqno from the incoming packet + 1. */
uip_connr->rcv_nxt[3] = UIP_TCP_BUF->seqno[3];
uip_connr->rcv_nxt[2] = UIP_TCP_BUF->seqno[2];
uip_connr->rcv_nxt[1] = UIP_TCP_BUF->seqno[1];
uip_connr->rcv_nxt[0] = UIP_TCP_BUF->seqno[0];
uip_connr->rcv_nxt[1] = UIP_TCP_BUF->seqno[1];
uip_connr->rcv_nxt[2] = UIP_TCP_BUF->seqno[2];
uip_connr->rcv_nxt[3] = UIP_TCP_BUF->seqno[3];
uip_add_rcv_nxt(1);
/* Parse the TCP MSS option, if present. */