在我的开发环境中,我必须代理请求以及到相应后端服务的 websocket 连接。为此,我使用lite-server和http-proxy-middleware。
我的 lite 服务器配置文件如下所示:
var proxyMiddleware = require('http-proxy-middleware');
var oProxyOptions = {
target: 'http://localhost:3000/api',
ws: true,
pathRewrite: function (path, req) { return path.replace('/api', ''); },
changeOrigin: true
};
var oProxy = proxyMiddleware('/api', oProxyOptions);
module.exports = function(bs) {
return {
"port": 8000,
"files": ["./resources/**/*.{html,htm,css,js,xml}"],
"server": {
"baseDir": "./resources",
"middleware": {
1: oProxy
}
}
};
};
但是,我总是在控制台中收到此错误:
WebSocket connection to 'ws://localhost:8000/api/ws' failed: Connection closed before receiving a handshake response
在 lite-server 的控制台输出中,我执行以下条目:
[HPM] GET /api/ws ~> http://localhost:3000/api/ws
[HPM] Upgrading to WebSocket
当我看到控制台输出时,我什至看到连接通过了我的节点端点。端点实现如下:
var ws = require('ws').Server;
var wss = new ws({ server: server, path:'/api/ws' });
wss.on('connection', function connection(ws) {
var location = url.parse(ws.upgradeReq.url, true);
console.log("New WS connection");
}
此错误的原因可能是什么?我的配置有问题吗?