No 'Access-Control-Allow-Origin' header is present on the requested resource. on 1.7.7

[ghost]

No description provided.

[kanion]

I think I have similar problem.

When I used http:// everything worked fine. When I added SSL support I have errors.

When I am using xhr-pooling I get message about blocking content from other origin:

 Zablokowano żądanie do zasobu innego pochodzenia: zasady „Same Origin Policy” nie pozwalają wczytywać zdalnych zasobów z „https://127.0.0.1:10000/socket.io/?EIO=3&transport=polling&t=1433329575886-4”. (nieudane żądanie CORS)
 engine.io-client:socket socket error {"type":"TransportError","description":0} +151ms

and in server:

 [nioEventLoopGroup-3-1] WARN com.corundumstudio.socketio.handler.AuthorizeHandler - Blocked wrong request! url: /bad-request, ip: /127.0.0.1:18646

I have apache on wamp using https on port 443 and Netty Socket.io server running on port 10000.
When I tried change https:// to wss:// then I have the same error on server and folowing on client:

socket.io-client:manager attempting reconnect +2s                                                       socket.io.js (wiersz 1284)
socket.io-client:manager readyState closed +2ms                                                         socket.io.js (wiersz 1284)
socket.io-client:manager opening wss://localhost:10541 +3ms                                                 socket.io.js (wiersz 1284)
engine.io-client:socket creating transport "websocket" +2s                                              socket.io.js (wiersz 3524)
engine.io-client:socket setting transport websocket +8ms                                                socket.io.js (wiersz 3524)
socket.io-client:manager connect attempt will timeout after 20000 +18ms                                 socket.io.js (wiersz 1284)
engine.io-client:socket socket error {"type":"TransportError","description":{"isTrusted":true}} +73ms   socket.io.js (wiersz 3524)
socket.io-client:manager connect_error +75ms                                                            socket.io.js (wiersz 1284)
socket.io-client:manager reconnect attempt error +3ms                                                   socket.io.js (wiersz 1284)
socket.io-client:manager will wait 3000ms before reconnect attempt +3ms                                 socket.io.js (wiersz 1284)
engine.io-client:socket socket close with reason: "transport error" +19ms                               socket.io.js (wiersz 3524)

Firefox nie może nawiązać połączenia z serwerem wss://localhost:10541/socket.io/?EIO=3&transport=websocket.
instance = new WebSocket(uri);

It writes that Firefox cannot connect to server wss:// but server is logging message about bad request.

I tried change Access-Control-Allow-Origin parameter to "", ":*", "127.0.0.1", "localhost" and It didin't changed anthing. Any ideas?

[ghost]

Maybe change the configuration's property--'origin' to hostname can be fix

need the same host

If the host is 'www.abc.com',the origin must be 'xxx.abc.com'

[SooLiD]

We just tried this with @kanion . It's doesn't fix our problem. @380099106 thanks for help !

Anyone other ideas ?

[1TTT9]

Hi, I met the same problem yesterday and fixed it mostly. from my experience, did you try to append prefix 'http://' to your hostname? sth like 'http://' + hostname. Hope it help and good luck.

[kanion]

When we added http:// to hostname socket.io server dont started.

We have folowing errors:

Firefox:

Zablokowano żądanie do zasobu innego pochodzenia: zasady „Same Origin Policy” nie pozwalają wczytywać zdalnych zasobów z „https://ssijpsu.org:10541/socket.io/?EIO=3&transport=polling&t=1437643425392-5”

Podczas łączenia z serwerem ssijpsu.org:10541 wystąpił błąd. SSL otrzymał rekord przekraczający największą dozwoloną długość. (Kod błędu: ssl_error_rx_record_too_long

Chrome:

GET https://ssijpsu.org:10541/socket.io/?EIO=3&transport=polling&t=1437643539387-1 net::ERR_SSL_PROTOCOL_ERROR16.Request.create @ socket.io.js:2739Request @ socket.io.js:267316.XHR.request @ socket.io.js:261416.XHR.doPoll @ socket.io.js:264417.Polling.poll @ socket.io.js:301017.Polling.doOpen @ socket.io.js:295413.Transport.open @ socket.io.js:216412.Socket.open @ socket.io.js:1603Socket @ socket.io.js:1490Socket @ socket.io.js:14423.Manager.open.Manager.connect @ socket.io.js:273(anonymous function) @ socket.io.js:535

[ryanChina]

while your server's AuthorizationListener return false,it also will happened