Hi Simon,
thanks, i'll check the random number and/or live with the RTS ;-) But this was not the root problem … I've updated this in my port which I did 1.5h later ;-) " LwIP 1.4.1: Outgoing TCP connection does not work - not able to send data on nonblocking TCP connection!" Marco From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Thursday, December 20, 2012 9:13 AM To: Mailing list for lwIP users Subject: Re: [lwip-users] LwIP 1.4.1: Outgoing TCP connection does not work - LwIP sends RST, ACK a) Make the device use a different initial Seqno on every boot (i.e. random number). You can do that in lwIP by defining TCP_LOCAL_PORT_RANGE_START and TCP_LOCAL_PORT_RANGE_END yourself (see tcp.c). b) Just live with the RST once (now you know where it comes from) and open the connection a second time. The RST from packet 57 should ensure that the first connection is closed on the server as well. Simon
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