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Re: [lwip-users] Data sending problem over TCP

From: Sanchayan
Subject: Re: [lwip-users] Data sending problem over TCP
Date: Thu, 23 Jun 2011 15:10:12 +0530


I have attached the wireshark .pcap file. And also a screenshot of wireshark.

Thanks & Best Regards,
Sanchayan Maity.

----- Original Message ----- From: "Kieran Mansley" <address@hidden>
To: "Mailing list for lwIP users" <address@hidden>
Sent: Thursday, June 23, 2011 14:49
Subject: Re: [lwip-users] Data sending problem over TCP

On Wed, 2011-06-22 at 14:24 +0530, Sanchayan wrote:

     err = tcp_connect( my_pcb, &ipaddr, 2101, NULL );

     write_error = tcp_write( my_pcb, buff, 6,
0 );                                     // I Get a return value of 0
for both err and write_error when i check in my Keil debugger for MCU

OK, so the connection is being established successfully, but then you
say you can't see any data packets in wireshark.  Do you see the TCP
connection being established in wireshark (i.e. the SYN, SYN-ACK, ACK
sequence)?  Perhaps you could show us an example wireshark capture?


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Attachment: TCP.pcap
Description: Binary data

Attachment: wireshark.JPG
Description: JPEG image

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