[英]Unable to receive json at client
我的服务器如下:
var http = require('http');
//Lets define a port we want to listen to
const PORT=8092;
//We need a function which handles requests and send response
function handleRequest(request, response){
response.statusCode = 200;
response.setHeader('Content-Type', 'application/json');
response.setHeader('Access-Control-Allow-Origin', 'http://localhost:3000');
response.setHeader('Access-Control-Request-Method', '*');
response.setHeader('Access-Control-Allow-Methods', 'OPTIONS, GET');
response.setHeader('Access-Control-Allow-Headers', '*');
response.setHeader('Access-Control-Allow-Credentials', 'true');
var responseBody = {
'foo': 'bar'
};
response.write(JSON.stringify(responseBody));
response.end();
}
//Create a server
var server = http.createServer(handleRequest);
//Lets start our server
server.listen(PORT, function(){
//Callback triggered when server is successfully listening. Hurray!
console.log("Server listening on: http://localhost:%s", PORT);
});
在客户端,我使用以下方法收听:
const socket = io('http://localhost:8092');
socket.on('foo', function(msg){
console.log(msg);
});
但是,没有任何内容输出到控制台。 我可以看到以下连续在网络上发送:
localhost resource-type-xhr POST HTTP 200
localhost resource-type-xhr GET HTTP 200
并且http:// localhost:8092 / socket.io /?EIO = 3&transport = polling&t = LRMGBeD返回: {"foo":"bar"}
我究竟做错了什么?
请emit
事件foo @server,以便您可以on
事件@client上使用
您需要在两端(服务器和客户端)使用socket.io。
服务器:
var io = require('socket.io').listen(server);
io.socket.emit('foo',{"foo":"bar"});
客户:
socket.on('foo', function(msg){
console.log(msg);
});
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