How to establish a TCP connection

asked 2016-12-21 11:28:50 -0600

Cayero
41 ●7 ●8 ●11

updated 2016-12-21 11:30:52 -0600

I need to implement something that could send data from a not-ROS-running System(A) to a ROS-running System(Z) and later sending data from Z back to A using a TCP connection (using socket). I was looking for something on that page http://wiki.ros.org/ROS/TCPROS but it is not clear for me. Are there any tutorials/codes to launch a server on a ROS-running System and listening for clients? Are there any packages that allow to implement TCP communication?

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Hello, did you solve your problem? Now i have the same Problem. I really want to know what you have done. And i can not run the code from https://github.com/abhinavjain241/com... in ROS. I look forward to your answer.

bluesnow ( 2019-04-26 08:53:05 -0600 )edit

This is already answered. However, I would like to add my words here. The comment above refers to a code that creates and manages a socket all by itself. It would be better to do this low-level task by an external library. For example, ZeroMQ is a robust and famous library with bindings in many languages. Please feel free to check out ros_zeromq_tutorial.

ravijoshi ( 2022-08-09 22:35:10 -0600 )edit

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answered 2016-12-21 12:46:43 -0600

ahendrix

47576 ●179 ●367 ●662 http://namniart.com/

ROSTCP is an adapter that lets ROS send messages over TCP for topics; not for general use.

If you want a TCP socket, use the standard OS interface for creating a TCP socket.

There are many good tutorials about this online; here are a few:

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Thank you for your answer, I'll on that. I found some helpful code. But client_node cannot connect to the server. https://github.com/abhinavjain241/com...

Cayero ( 2016-12-21 13:26:37 -0600 )edit

I'm not familiar with that project, and I can't help you with it. I'd recommend that you ask a new question or open an issue on that repository. For either, I recommend that you include the specifics of your issue such as the exact commands and exact output.

ahendrix ( 2016-12-26 12:51:29 -0600 )edit

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answered 2022-08-09 13:33:35 -0600

akumar3.1428
61 ●21 ●52 ●54

updated 2022-08-09 13:34:35 -0600

I would like to suggest that you can use the following GitHub that can help you Link - https://github.com/adnanademovic/rosrust for using rust , however, there are different crates for different languages like roslibpy for python

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Please explain how your answer is at all related to the above question. This looks very much like spam to me.

Mike Scheutzow ( 2022-08-09 18:58:40 -0600 )edit

Greetings I was using ROS Neotic, initially using the example code from GitHub I was able to publish some data to ROS and also subscribe from it using the rust language. We can also use rospylib - https://roslibpy.readthedocs.io/en/la... if we are using python. Different languages have different ROS Bridge libraries that can attain the respective task of transmission data. I hope I am more clear now

akumar3.1428 ( 2022-08-09 19:08:15 -0600 )edit

Thank you for the clarification.

Mike Scheutzow ( 2022-08-09 19:14:14 -0600 )edit

Now the problem is that I can do it when ROS bridge and Publisher are working on the same machine, however when I am trying to run ROS on my laptop and publish data to it from raspberry pi I am not able to do it, do you have any suggestions ?

akumar3.1428 ( 2022-08-09 19:16:37 -0600 )edit

Don't hijack someone else's question. Instead, you should create a new question of your own. In your description, include a url back to this one if you think it helps explain your issue.

Mike Scheutzow ( 2022-08-10 07:05:07 -0600 )edit

I am sorry about it I am new to ROS community

akumar3.1428 ( 2022-08-10 07:35:42 -0600 )edit

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How to establish a TCP connection

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