[lwip-users] accepts_pending overflow with pcb's stuck in ESTABLISHED state

[Weaver, Tyler [GCS]]

Hello,

 

accepts_pending never seems to decrement and connections get stuck in ESTABLISHED and never exit.  Eventually, the 256^th attempt to connect fails.  What could cause this? 

 

Our current workaround is to call tcp_shutdown in the EXTABLISHED state with TF_GOT_FIN in the switch statement in tcp_process.  Then in tcp_bcb_purge the if statement that checks for SYN_RCVD is removed so that code executes every time, decrementing accepts_pending.

 

Thank you.