Have you tried with LWIP_TCP_SACK_OUT option enabled ? This option alone solves quite a number of issues on some low-mem devices.
To use it you would need to upgrade to lwIP-2.1.2. I must take this opportunity to thank all lwIP devs for their work, this is much appreciated (I'm speaking from esp8266/arduino community). david On Mon, Dec 17, 2018 at 09:26:55AM -0200, Norberto R. de Goes Jr. wrote: > Please, anybody could help me in this my issue? > Thanks! > Norberto Goes > > > > Em dom, 9 de dez de 2018 às 19:18, Norberto R. de Goes Jr. < > [email protected]> escreveu: > > > Hi, how are you? > > > > I have been used the LWIP library for several years already. > > Now I developed a new application that exchange larger packets, like 2K > > bytes. > > > > Commits in use (SHA-1) : > > - lwip : d70d9bf8660827e2919d5fc9c9469532196225e1 > > - lwip-contrib: 4e553f7b3d3af4ac1f3f6c70f38371e4395fdccd > > > > To simulate my real scenario and you can try to reproduce the problem I > > am facing, I have made alterations in the "simhost.c", "lwipopts.h" and > > "tcpecho.c" from lwip-contrib. The ethernet data for teh netif is provided > > by a socket-raw driver (Linux). The tcpecho just consume the data, no > > reply (no echo). The "simhost" (server) is generated with the own Makefile > > associated avaliable in the "lwip-contrib" git. > > > > In addition, I wrote a small "client" (use the TCP-IP/Linux stack). > > When the "client" sends small packets, all works fine. But when it sends > > larger packets (for instance, 2048 bytes), just the first are sent fast > > (normal) but just after the locking occurs. > > > > Summary: > > a) 02 Oracle VMBox (VM#1 and #2) - Linux host > > > > b) Sequence to run: > > - VM#1 (server): > > > sudo your_path1/simhost > > - VM#2 (client): > > > your_path2/client ip_netif port size_data > > - example: > ./client 10.0.2.121 5124 2065 /* block */ > > - example: > ./client 10.0.2.121 5124 1000 /* no block */ > > > > c) Altered files (from lwip-contrib), attacheds: > > - .../apps/tcpecho/tcpecho.c > > - .../ports/unix/proj/unixsim/lwipopts.h > > - .../ ports/unix/proj/unixsim/simhost.c > > > > d) Client app (attacheds files) > > > > Just to compare, when I use another server with TCP-IP/Linux, not LWIP > > stack, but the same attached client, no problem found, including larger > > packets. > > > > Please, what I am doing or configuring wrong ? > > Thank you very much. _______________________________________________ lwip-users mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/lwip-users
