LPC1768 with LWIP drops packages makes sockets not response

lpcware — Wed, 15 Jun 2016 18:06:43 GMT

Content originally posted in LPCWare by mcs-guy on Wed Jan 15 07:44:27 MST 2014
Supporty request.

I am currently implementing a Telnet server on a LPC1768. with LPCopen V1.03 and FreeRTOS.
The telnet server is working fine until the EMAC drops some packets due to heavy traffic on the ethernet link.

I can accept that some packages are dropped and data is lost but the socket locks up and never return from
       bytes_recv = lwip_recv(sockfd, &in_char, sizeof(in_char), 0);

With the EMAC-debug option enabled I can see that the pbuf are recovered.
But the recv function never return.
The lwip stacked seesm to hang up in the time out timers :
        stmf calling h=tcpip_tcp_timer arg=0
        stmf calling h=ip_reass_timer arg=0

The tcp_echo fucntion recovers fine from data loss.

I would like the lwip_recv called to return with the data send after the moment packages are lost. The missing data should not be a problem for my application.

Does somebidy know how to solve this problem?

LPC Microcontrollers中的主题 LPC1768 with LWIP drops packages makes sockets not response

LPC1768 with LWIP drops packages makes sockets not response