Hiya, I’m looking at using Legato to implement a socket server, but I’m not clear on how to ‘unroll’ the ‘listen()’ call from a blocking call in COMPONENT_INIT() - which is bad. Conventionally, I would: fd = socket(...); // open a socket bind(fd, ...); // bind the socket to an address listen(f…

Hi @lotam , Excellent example. Thanks. Have socket server application running now. ciao, Dave

Is le_fdMonitor API good for this? File Descriptor Monitor API - Legato Docs legato™ is an open source Linux-based embedded platform designed to simplify connected IoT application development

Hi @lotam , I’m familiar with fdMonitor - I’ve used it for serial and socket clients. What I can’t see how to do is to work the blocking listen() call into the fdMonitor scheme of things. Ta, Dave

Hi David, Thanks reply, is below sample code a good reference for TCP server without blocking? https://github.com/legatoproject/legato-af/blob/master/apps/sample/fwupdateDownloader/server/fwupdateDownloader.c Thx

Hi lotam, Thanks. Homework for tomorrow and I’ll let you know how I get on. ciao, Dave

Another way around it is to start a new thread for the binding and then use yet another thread for each of the incoming connections. This trick I have used with great success. Remember that when you make a new thread you need to connect to all the legato interfaces you which to use in that thread.

Hi @andcor Ta. I’ve done that before too … I only need a single threaded server and I’m trying to do it without using threads. ciao, Dave

Thanks David! Would you please mark this thread as solved? Thanks!

@lotam I am using the same app and it works well when sending data to the ecm0 interface (using wp7702 on FX30) but it doesnt when I try to connect trough eth0 (which I have set to static IP). so the ecm0 has IP 192.168.2.2 while eth0 is 192.168.0.31 telnet 192.168.2.2 8999 works telnet 192.168.0.31…

you might give a try on setting default network interface: [Mike Cooper] How to set the preferred network interface in linux linux, networking, routing, tcpip asked by Mike Cooper on 07:55PM - 17 Mar 10 UTC

I want to use the cellular interface as default network interface, but I also thought that socket should get messages from any network interface by default

Use legato for a socket server

Uncategorized

jyijyi May 19, 2021, 1:54am 16

You can run the init script in startlegato.sh

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Use legato for a socket server

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