Hugh， Sorry, I'm not familiar with 1.3.1, no more information can provided for you .
Regards Yafei 2013/10/31 Hugh Reynolds <[email protected]> > Yafei,**** > > ** ** > > Thanks for the input. I see that in 1.4.1. Unfortunately I am left > maintaining 1.3.1.**** > > Is there a guide for transitioning to 1.4.1?**** > > ** ** > > Regards**** > > ** ** > > Hugh**** > > ** ** > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Yafei > Yan > *Sent:* 31 October 2013 02:06 > *To:* [email protected]; Mailing list for lwIP users > *Subject:* Re: [lwip-users] Problem with tcp_bind()**** > > ** ** > > Hi,**** > > ** ** > > When you call tcp_close(), the socket is not close immediately. The tcp > connection will come into TCP_WAIT, after few minitues the connection will > close completely and free the socket.**** > > If you want to call tcp_bind() directly after call tcp_close, you can > configure the socket attribute "SO_REUSE" as follow:**** > > /****** > > * SO_REUSE==1: Enable SO_REUSEADDR option.**** > > */**** > > #ifndef SO_REUSE**** > > #define SO_REUSE 1**** > > #endif**** > > ** ** > > ** ** > > Yafei**** > > ** ** > > 2013/10/31 Hugh Reynolds <[email protected]>**** > > My application works fine but…**** > > **** > > I have LWIP running on my ARM platform and it talks to my PC application > just fine.**** > > I’m send the PC an unsolicited message every second.**** > > **** > > If my PC connection gets lost…i.e. I pull the network cable out of the PC* > *** > > I get the expected error next time I call tcp_write().**** > > I call tcp_close() and drop back to my loop listening for a connection > which is (simplified)**** > > **** > > err_t tcp_listen_init(void)**** > > {**** > > err_t error;**** > > struct tcp_pcb* ptel_pcb;**** > > **** > > ptel_pcb = tcp_new();**** > > if (ptel_pcb != NULL)**** > > {**** > > error = tcp_bind(ptel_pcb, IP_ADDR_ANY, PORT1);**** > > }**** > > if (error == ERR_OK)**** > > {**** > > ptel_pcb = tcp_listen(ptel_pcb);**** > > tcp_arg(ptel_pcb, ptel_pcb);**** > > tcp_accept(ptel_pcb, accept);**** > > printf("[Ttcp_listen_init started: PORT = %05d]\n", PORT1);**** > > }**** > > }**** > > else**** > > {**** > > //************************** > > printf("[TUnable to Bind for tcp_listen_init]\n”);**** > > tcp_close(ptel_pcb);**** > > }**** > > }**** > > else**** > > {**** > > error = ERR_MEM;**** > > printf("[TNo memory for tcp_listen_init]\n");**** > > }**** > > return error;**** > > }**** > > **** > > I get stuck in a loop allways hitting the statements below > //************************** > > tcp_bind() is reporting ERR_USE from the ‘address already is in use’ term* > *** > > **** > > Any idea how to close/abort/abandon the link if the cable is pulled out of > the PC without getting into this loop I am in?**** > > **** > > Regards**** > > **** > > Hugh**** > > **** > > > _______________________________________________ > lwip-users mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/lwip-users**** > > ** ** > > _______________________________________________ > lwip-users mailing list > [email protected] > https://lists.nongnu.org/mailman/listinfo/lwip-users >
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