將命令行封裝成WebSocket可以訪問的工具：websocketd

jopen 10年前發布 | 39K 次閱讀 websocketd

websocketd是一個小的命令行工具，將已有的命令行接口程序進行包裝，并允許通過WebSocket訪問它。

例如這樣一個命令行程序 count.sh:

 #!/bin/bash
for COUNT in $(seq 1 10); do
  echo $COUNT
  sleep 1
done

可通過如下命令進行封裝：

$ websocketd --port=8080 ./count.sh

然后你可以創建一個網頁來測試 count.html:

<!DOCTYPE html>
<pre id="log"></pre>
<script>
  // helper function: log message to screen
  function log(msg) {
    document.getElementById('log').textContent += msg + '\n';
  }

  // setup websocket with callbacks
  var ws = new WebSocket('ws://localhost:8080/');
  ws.onopen = function() {
    log('CONNECT');
  };
  ws.onclose = function() {
    log('DISCONNECT');
  };
  ws.onmessage = function(event) {
    log('MESSAGE: ' + event.data);
  };
</script>

特性

  • Very simple install. Just download the single executable for Linux, Mac or Windows and run it. No dependencies, no installers, no package managers, no external libraries. Suitable for development and production servers.
  • Server side scripts can access details about the WebSocket HTTP request (e.g. remote host, query parameters, cookies, path, etc) via standard CGI environment variables.
  • As well as serving websocket daemons it also includes a static file server and classic CGI server for convenience.
  • Command line help available via websocketd --help.
  • Includes WebSocket developer console to make it easy to test your scripts before you've built a JavaScript frontend.
  • Examples in many programming languages are available to help you getting started.

項目主頁：http://www.baiduhome.net/lib/view/home/1402819990403

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