[riot-notifications] [RIOT-OS/RIOT] tests/gnrc_tcp_*: #2 not working on 6Lo-based boards (#10956)

Simon Brummer notifications at github.com
Wed Feb 6 16:08:09 CET 2019


> > @brummer-simon check [this pcap](https://owncloud.inet.haw-hamburg.de/index.php/s/ZWVbzFB4NE7KIel). As you can see, handshake seems somewhat ok but then weird stuff happens. However, I'd prefer **not** to analyze remotely and maybe wait for the next Hack'n'ACK.
> 
> That would play into the fragmentation theory. The handshake has no payload.
> 
> @Martine - I have some vague memory that the TCP inspection view was somewhat broken in wireshark when to comes to using TCP over 6LoPAN. This was few years back but it could is still not fixed.
> 
> @PeterKietzmann - To be really sure if this is fragmentation on 6LoPAN or really entire TCP Packets, you could add a debug print in "sys/net/gnrc/transport_layer/tcp/gnrc_tcp_eventloop.c".
> Every Packet entering and leaving the TCB comes through there including retransmits. Could you check that for me?



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