I have an old legato app running fine with legato 19.2 and yocto 3.18. Now with new generations of wp7607-1 modules I have to use legato 21.05 and linux 4.14. I was able to compile and install yocto with additional progs (openvpn) as I did with last version of legato dist-source (version 02.37.10.0…

Hello, No it is not related to a specific port number. It seems to be a problem with my new compiled app with current legato and / or linux 4.14. I thought it could be a sandbox-problem but the app is currently not sandboxed.

Did you capture wireshark log for investigation? Does this application help? [image] Networking: TCP server Operation not permitted (errno -1) You can use my TCP echo server application which uses read() instead of recv(). Procedure: compile and download attached app…

Hello, I will add tcpdump to my system and try to capture packets.

You can also capture wireshark log on PC side Btw, you can also try this app [image] Networking: TCP server Operation not permitted (errno -1) You can use my TCP echo server application which uses read() instead of recv(). Procedure: compile and download attached ap…

With my older Wp7607-1 everything works fine. Also a server created with socat is responding. The tcp-server of my app does not even recognize a connection!

If the app above works, then you can port the app to your application

I started my apps tcpserver on port 9302 (and it is running): root 2417 0.0 0.7 3196 1216 pts/0 S 12:37 0:00 ./tcpserver -p 9302 -t 900 start I connected to a PC and used the local ecm0-interface for testing. I started socat with: socat -v -d -d TCP-LISTEN:9302,fork TCP:localhos…

I compiled and installed your app fwdownloader. It runs as expected. I can connect local with nc and see the echo of my messages.

Now i compared your server with mine: I used socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) you use socket(AF_INET, SOCK_STREAM, 0) I used if (listen(fd,0) < 0) … you use if (listen(fd,1) < 0) … I changed the 2 lines. Additionally I had to remove the build-Directory to recompile all code. After…

WP7607-1 with Legato 21.05, tcp-server not working as expected

jyijyi January 22, 2025, 11:03am 4

Did you capture wireshark log for investigation?

Does this application help?

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WP7607-1 with Legato 21.05, tcp-server not working as expected

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