Am 11. April 2022 22:43:59 MESZ schrieb Grant Edwards <grant.b.edwa...@gmail.com>: >On 2022-01-20, Grant Edwards <grant.b.edwa...@gmail.com> wrote: > >> I'm running into a problem where netconn_connect always returns OK >> immediately, even when the connection was refused by the server (it >> replies to the SYN with a RST). Subsequent attempts to write to the >> connection return -14 (ERR_RST) or -11 (ERR_CONN). > >> Shouldn't netconn_connect() return an error if the connection was >> refused? If the server accepts the conneciton, it seems to work OK. >> >> Here's the relevent code: >> >> >> conn = netconn_new(NETCONN_TCP); >> if (!conn) >> { >> printf("conn NULL\n"); >> return; >> } >> e = netconn_connect(conn, &ip, 7000); >> if (e != ERR_OK) >> { >> printf("%s[%d] netconn_connect e=%d\n",__func__,exinf,e); >> netconn_delete(conn); >> return; >> } >> printf("connected\n"); >> ... >> e = netconn_write_partly(conn, data, dsize, NETCONN_COPY, >> &written); >> if (e != ERR_OK) >> printf("%s[%d] netconn_write e=%d\n",__func__,exinf,e); > >I'm still stumped by this. It's 100% reliable: netconn_connect() >returns ERR_OK even though the server responded to the SYN >with a RST. Subsequent writes to that connection fail. > >I get the same resutls using the socket api. The call to connect() >returns 0, but then send() fails. > >Nobody else has seen this?
No, but if you think this is a bug, please file a bug report! Regards, Simon > > > >_______________________________________________ >lwip-users mailing list >lwip-users@nongnu.org >https://lists.nongnu.org/mailman/listinfo/lwip-users _______________________________________________ lwip-users mailing list lwip-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/lwip-users