我正在写一个web应用程序,我想通过SSL在Tornado WebSockets上从客户端向服务器端发送JSON-Code.当我想建立连接时,Google Chrome会在控制台日志中显示错误：
Uncaught InvalidStateError: Failed to execute 'send' on 'WebSocket': Still in CONNECTING State.
我的python服务器看起来像这样：
from tornado import websocket,web,ioloop
import json
from sqlite3functions import *
class SocketHandler(websocket.WebSocketHandler):
def on_message(self,message):
handleRequest(self,json.loads(message),True)
print(message)
def handleRequest(obj,message,isWebsock):
...
def writeResponse(obj,isWebsock):
if (isWebsock):
obj.write_message(message)
else:
print(message)
obj.write(message)
print('msg sent')
app = web.Application([
(r'/w',SocketHandler)
])
if __name__ == "__main__":
app.listen(8888)
ioloop.IOLoop.instance().start()
我的客户：
var ws;
function connect() {
ws = new WebSocket('wss://127.0.0.1:8888/w');
ws.onopen = function()
{
ws.send("Message to send");
};
}
$(document).ready(function() {
connect();
$("#Button").on('click',function() {
...
ws.send(data);
});
});
谢谢
最佳答案
在连接就绪状态之前,不要让套接字发送数据.
这些功能可能有助于：
function sendMessage(msg) {
waitForSocketConnection(nvWS,function() {
ws.send(msg);
});
};
function waitForSocketConnection(socket,callback){
setTimeout(
function(){
if (socket.readyState === 1) {
if(callback !== undefined){
callback();
}
return;
} else {
waitForSocketConnection(socket,callback);
}
},5);
};