Are you sure you don't try to write on the listen pcb, and not on the "accepted" pcb ? Do you have read "18.2 Directly interfacing the stack" in the old "Design and Implementation of the lwIP TCP/IP Stack" pdf file? ==================================== Frédéric BERNON HYMATOM SA Chef de projet informatique Microsoft Certified Professional Tél. : +33 (0)4-67-87-61-10 Fax. : +33 (0)4-67-70-85-44 Email : [EMAIL PROTECTED] Web Site : http://www.hymatom.fr ==================================== P Avant d'imprimer, penser à l'environnement
-----Message d'origine----- De : [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] De la part de Yann Suisini Envoyé : jeudi 5 avril 2007 15:46 À : [email protected] Objet : Re: [lwip-users] RE : tcp_write() problem from outside callbacksfunctions Hello , I had just get the tcp_pcb state just before the tcp_write in my main loop and in the callback function. In the main : state=1 (LISTEN) in the callback : state=4 (ESTABLISHED) It seems more and more strange to me ... Frédéric BERNON wrote: > > It seems that only possible ERR_CONN cause is you call tcp_write with > a connection in a invalid state. Can you tell us what is the > "tcpweb->state" value when you call tcp_write ? > > ==================================== > Frédéric BERNON > HYMATOM SA > Chef de projet informatique > Microsoft Certified Professional > Tél. : +33 (0)4-67-87-61-10 > Fax. : +33 (0)4-67-70-85-44 > Email : [EMAIL PROTECTED] > Web Site : http://www.hymatom.fr > ==================================== > P Avant d'imprimer, penser à l'environnement > > > > -----Message d'origine----- > De : [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] De > la part de Yann Suisini Envoyé : jeudi 5 avril 2007 14:51 > À : [email protected] > Objet : Re: [lwip-users] tcp_write() problem from outside callbacks > functions > > > > In fact I didn't put the connection part in the previous mail but the > connection is ok :) (the tcp_new/tcp_bind:tcp_listen/tcp_accept > sequence). Once the connection is established the tcp_write data frome > the callbacks are sent well . But the tcp_write from the main loop > that you can see in the source always return the ERR_CON . I read 2 > or 3 times the rawapi.txt . But I probably missed something :( > > > > > Kieran Mansley wrote: >> >> On Thu, 2007-04-05 at 09:57 +0000, Yann Suisini wrote: >>> At the first tcp_write , it's right that I'm not connected soe >>> ERR_CON is ok . But even when I'm connected after, the ERR_CON is >>> always returned . I really don't know what I'm doing wrong. >> >> When do you establish the connection? I can only see calls to >> tcp_write (), not to >> tcp_new()/tcp_bind()/tcp_listen()/tcp_accept()/tcp_connect() >> - at least some of these are required. I suggest having a read of >> lwip/doc/rawapi.txt >> >> Kieran >> >> >> >> _______________________________________________ >> lwip-users mailing list >> [email protected] >> http://lists.nongnu.org/mailman/listinfo/lwip-users >> >> > > -- > View this message in context: > http://www.nabble.com/tcp_write%28%29-problem-from-outside-callbacks-functions-tf3530647.html#a9855171 > Sent from the lwip-users mailing list archive at Nabble.com. > > > > _______________________________________________ > lwip-users mailing list > [email protected] > http://lists.nongnu.org/mailman/listinfo/lwip-users > > BEGIN:VCARD > VERSION:2.1 > N:BERNON;Frédéric;;M. > FN:Frédéric BERNON > ORG:HYMATOM SA;Recherche et Développement > TITLE:Chef de projet informatique TEL;WORK;VOICE:04-67-87-61-10 > TEL;WORK;FAX:04-67-70-85-44 > ADR;WORK;ENCODING=QUOTED-PRINTABLE:;23;Zone Industrielle=0D=0A175 rue de > Massacan;VENDARGUES;;34740;FRANCE; > LABEL;WORK;ENCODING=QUOTED-PRINTABLE:23=0D=0AZone Industrielle=0D=0A175 > rue de Massacan=0D=0AVENDARGUES 34740=0D= > =0AFrance > URL;WORK:http://www.hymatom.fr > ROLE:Chef de projet informatique > EMAIL;PREF;INTERNET:[EMAIL PROTECTED] > REV:20020404T083210Z > END:VCARD > > _______________________________________________ > lwip-users mailing list > [email protected] > http://lists.nongnu.org/mailman/listinfo/lwip-users > -- View this message in context: http://www.nabble.com/tcp_write%28%29-problem-from-outside-callbacks-functions-tf3530647.html#a9856072 Sent from the lwip-users mailing list archive at Nabble.com. _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
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