Hi again, Just spotted my typo in the query below. The question should read:
My application, when it comes to sending a packet, calls tcp_write() followed by tcp_output(). Does tcp_output() actually send the packet or does it just set it up ready to send? If it only sets it up ready to send what routine causes the packet to be sent? Thanks, Tony Anthony Carr Principal Electronics Engineer [cid:[email protected]] Unit D1, Grafton Way Basingstoke, Hampshire RG22 6HZ www.devlin.co.uk<http://www.devlin.co.uk/> T: +44 (0)1256 467367 F: +44 (0)1256 840048 M: E: [email protected] This email contains confidential and/or privileged information belonging to Devlin Electronics Limited, its affiliates and/or subsidiaries. If you are not the intended reciient you are hereby notified that any disclosure, copying, distribution and/or the taking of any action based upon relieance on the contents of this transmission is strictly forbidden. If you have received this message in error; please notify the sender by retirun email and delete it from your system, If you require assistance please contact our sales office on +44 (0)1256 467367 or visit our website www.devlin.co.uk<http://www.devlin.co.uk/>. From: [email protected] [mailto:[email protected]] On Behalf Of Carr, Anthony Sent: 27 February 2013 11:17 To: [email protected] Subject: [lwip-users] Multiple connection server issue Hi, I am having a problem with a TCP server with multiple connections to clients using TCP raw API. I am tracking through the code trying to see what is causing the problem but I need a bit of help in understanding how the TCP transmission system works. My application when it comes to sending a packet calls tcp_output() followed by tcp_write(). Does tcp_write() actually send the packet or does it just set it up ready to send? If it only sets it up ready to send what routine causes the packet to be sent? I am using lwIP version 1.3.2 with NO_SYS = 1. Thanks, Tony
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