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RobotWebTools / ros2-web-bridge

Bridging your browser to the ROS 2.0
Apache License 2.0
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Header Timestamp automatically #149

Closed M-Redel closed 3 years ago

M-Redel commented 4 years ago

hi guys, if I omit the header timestamp, according to this description it should read: "Alternatively, just the timestamp field can be omitted, and then the current time will be automatically inserted. "But if I omit the timestamp then I won't get any messages in ROS2.

minggangw commented 4 years ago

You could enable the debug to see the detailed information, e.g.

DEBUG=ros2-web-bridge* node bin/rosbridge.js
M-Redel commented 4 years ago

Hello, I have bent it and I have received the following message. But the question was if I can omit the timestamp in the json transfer and have it added automatically when the message is received in ROS2.
This worked in ROS 1. debug

minggangw commented 4 years ago

But the question was if I can omit the timestamp in the json transfer and have it added automatically when the message is received in ROS2.

Currently, the rclnodejs, as the back-end of the bridge, will not assign a default value to a key (e.g. timestamp) if it's not been explicitly assigned to. Further, the rclnodejs will validate the message/topic when it's being published, so an error will be reported which I think it's what you meet.