diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-05-22 22:20:31 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2019-05-22 22:20:31 +0200 |
| commit | 197ff3ac2f4fe9be7eefc9c8409cee04e267b04a (patch) | |
| tree | a4a8231976ee82ed315c7f3a3f754b96e487adef /sys/src/9/ip | |
| parent | d7aa56c073abea325fb52821b49fa453bacd3922 (diff) | |
devip: if the server does not support TCP ws option, disable window scaling (thanks joe9)
if the server responds without a window scale option in
its syn-ack, disable window scaling alltogether as both
sides need to understand the option.
Diffstat (limited to 'sys/src/9/ip')
| -rw-r--r-- | sys/src/9/ip/tcp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sys/src/9/ip/tcp.c b/sys/src/9/ip/tcp.c index 775d1b1ce..8d0195ac3 100644 --- a/sys/src/9/ip/tcp.c +++ b/sys/src/9/ip/tcp.c @@ -3031,6 +3031,12 @@ procsyn(Conv *s, Tcp *seg) tpriv->stats[Mss] = tcb->mss; } + /* if the server does not support ws option, disable window scaling */ + if(seg->ws == 0){ + tcb->scale = 0; + tcb->snd.scale = 0; + } + tcb->snd.wnd = seg->wnd; initialwindow(tcb); } |