从 docker 容器发送 udp 广播 [英] sending udp broadcast from a docker container

问题描述

我有几个 docker 容器(使用 docker-compose 和单个网络 - network-sol)

I'm having a few docker containers (Using docker-compose and a single network - network-sol)

其中一个容器是 Spring Boot 应用程序，它将 UDP 广播发送到本地网络.255.255.255.255 失败，因为它是 network-sol

One of the containers is a Spring Boot application that sends UDP broadcast to the local network. 255.255.255.255 fails because It's the local broadcast address of network-sol

我怎样才能广播UDP消息，例如顶级本地网络"会得到那些数据包?我必须为此使用定向广播地址吗?

How can I broadcast UDP messages such as the "top local network" Will get those packets? Do i have to use directed broadcast address for that?

附言

如果应用程序部署在 docker 之外(本地网络的一部分)，则广播可以工作

broadcast works if the application is deployed outside of docker (part of the local network

推荐答案

您应该使用 network_mode: host 运行 docker-compose.yml 文件中定义的服务.

You should either run the service defined in your docker-compose.yml file with network_mode: host.

或者，您可以使用以下配置发布要与之通信的容器的端口.请注意，UDP 通信需要 /udp 才能工作.

Alternatively you can publish the port of the container you intended to communicate with by publishing it using the following configuration. Note that the /udp is required for UDP communication to work.

service:
  ports:
    - "8080:8080/udp"

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