Hello All: There's a problem i am facing. Is it a bug ? It's tcp connect socket, SYN will be send, but if before SYN ACK was received, the SYN will be retransmited, there'll be some problem. the restransmit is like this: move the snd_nxt to snd_una, and begin to sendout by tcp_output. after send the snd_nxt will return to normal just like below. before tcp_output after tcp output |--Seq--|--Seq+1--| |--Seq--|--Seq+1--| snd_una snd_una snd_nxt snd_nxt If the tcp_output just have some error, for example: when alloc mbuf, it returns NULL, and then the snd_nxt number will not be return to normal. If just in this time, SYN Ack arrives, freeBSD can't handle this situdition. Thanks!
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