Spring-Boot-WebSocket | chat application using Spring Boot and Web Socket | Websocket library
kandi X-RAY | Spring-Boot-WebSocket Summary
kandi X-RAY | Spring-Boot-WebSocket Summary
Building a chat application using Spring Boot and Web Socket
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QUESTION
I am trying to build a gitlab pipeline to build a docker image from a java app. I have two artifacts, that I would like to pass between the build stages... One file (build_result.txt) is found an uploaded, but the other, (chat.jar) cannot be found. But, both files are in the same directory. Is there a size or extension limit for uploading files as artifacts?
...ANSWER
Answered 2020-Sep-24 at 21:11You are creating a docker_build.txt
file with the content of
echo "building app..."| tee -a build_result.txt
but then you are changing the directory to /app
and then you create another docker_build.txt
and finally you build your artifact.
But you see your first docker_build.txt
not with your ls
command because your starting directory is not /
but the a dynamic path provided by the CI_PROJECT_DIR
predefined variable
Further all artifact defintions are also relativ to this path, therefore after moving your docker_build.txt
command this should work:
QUESTION
I don’t feel comfortable using WebSocket with Codename One and Spring Boot. Maybe my “error” was the implementation of one my own communication protocol over websocket, featuring ack and other hard to implements things. My protocol have issues that I wasn’t able to fix... I spent a lot of time creating it, but there are too much complexities for me.
Today I discovered that I tried to reinvent the wheel... since there are protocols over websocket like STUMP:
https://www.toptal.com/java/stomp-spring-boot-websocket
STOMP is a simple text-based messaging protocol that was initially created for scripting languages such as Ruby, Python, and Perl to connect to enterprise message brokers. Thanks to STOMP, clients and brokers developed in different languages can send and receive messages to and from each other. The WebSocket protocol is sometimes called TCP for Web. Analogically, STOMP is called HTTP for Web. It defines a handful of frame types that are mapped onto WebSockets frames, e.g., CONNECT, SUBSCRIBE, UNSUBSCRIBE, ACK, or SEND. On one hand, these commands are very handy to manage communication while, on the other, they allow us to implement solutions with more sophisticated features like message acknowledgment.
Is there any Stomp implementation for Codename One? Or the implementation of any other protocol over websocket? Thank you
...ANSWER
Answered 2020-May-08 at 05:39I'm afraid not at this time. I also tried looking for implementations in Java but couldn't find any. It would actually be really nice if we had something like that.
I found an implementation for Android but I didn't get the chance to look at the complexity of porting it to Codename One.
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