Re: [lwip-users] lwip_connect fails

[Heyu Zhu]

Thanks to Simon.

 

After trace into tcp_tmr, i find some problems in my porting

 

Regards

 

2010/5/12, address@hidden <address@hidden>:

Heyu Zhu wrote:

Hi everyone,
I set up a client using lwip-1.3.2 and both sever and client are connect by ethernet.
When i call "lwip_connect" the client do send a correct arp-request packet and the sever
give a correct arp-reply packet. But after that don't send any packet for a long time ,
then lwip_connect return with an error.
I don't know what shall i do to continue it.  What's wrong? Could you give me some advice?

Do you have ARP_QUEUEING enabled? If so, the SYN-packet should be queued in etharp.c and sent out when your device receives the ARP response. You might probably first check if your device receives the ARP response.
If ARP_QUEUEING is disabled, the SYN-packet should eventually be retransmitted (by a call to tcp_tmr, which I hope you call at the correct interval).

Simon

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