Hi All,
I use lwIP + PPP in GPRS environement.
The connect could success in sometime, but could failure for 40%. Here is my
log
...
22 22:46:14.774823 192.168.0.104 10.9.0.1 TCP
8080 > 16550 [ACK] Seq=329 Ack=273 Win=65264 Len=0
23 22:46:14.775386 192.168.0.104 10.9.0.1 TCP
8080 > 16550 [FIN, ACK] Seq=329 Ack=273 Win=65264 Len=0
24 22:46:15.750435 10.9.0.1 192.168.0.104 TCP
16550 > 8080 [ACK] Seq=273 Ack=330 Win=2919 Len=0
25 22:46:54.623132 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
26 22:46:54.623541 192.168.0.104 10.9.0.1 TCP
8080 > 17357 [SYN, ACK] Seq=0 Ack=1 Win=16384 Len=0 MSS=1460
27 22:46:54.663688 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
28 22:46:54.700646 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
29 22:46:54.743165 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
30 22:46:54.780492 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
31 22:46:54.799406 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
32 22:46:55.014573 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
33 22:46:55.074610 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
34 22:46:55.131491 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [SYN] Seq=0 Len=0 MSS=1452
35 22:46:55.819626 10.9.0.1 192.168.0.104 TCP
17357 > 8080 [RST, ACK] Seq=1 Ack=1 Win=2920 Len=0
...
70 22:48:47.710393 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
71 22:48:47.710422 192.168.0.104 10.9.0.1 TCP
8080 > 19881 [SYN, ACK] Seq=0 Ack=1 Win=16384 Len=0 MSS=1460
72 22:48:47.723735 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
73 22:48:47.761691 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
74 22:48:47.802748 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
75 22:48:47.870328 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
76 22:48:47.879713 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
77 22:48:47.898218 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
78 22:48:48.095996 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
79 22:48:48.174374 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [SYN] Seq=0 Len=0 MSS=1452
80 22:48:48.879282 10.9.0.1 192.168.0.104 TCP
19881 > 8080 [RST, ACK] Seq=1 Ack=1 Win=2920 Len=0
>From the log, I feel GPRS network has extremely long delay. (Data is hold in
sometime, and then data will be transfered in certain time.) If this case
happen, RST will be send, so the connection failure.
Is this the normal case in GPRS network? Is there suggest configured
parameter for GPRS network?
Thanks
Lee
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