套接字 io 的奇怪 cors 问题

Question

我正在使用 btford.socket-io，并尝试与 node 对话。

一切正常，但在我从 localhost:5000 更改为 example.org 之后就不行了，如下所示：

.factory('socket',function(socketFactory){
     //working
     var myIoSocket = io.connect('http://localhost:5000');
     //not working
     var myIoSocket = io.connect('http://example.org:5000');

      mySocket = socketFactory({
        ioSocket: myIoSocket
      });

    return mySocket;
})

我的控制台出现了这个错误

XMLHttpRequest cannot load http://example.com:5000/socket.io/?EIO=3&transport=polling&t=LIGH5VO. A wildcard '*' cannot be used in the 'Access-Control-Allow-Origin' header when the credentials flag is true. Origin 'http://localhost:8100' is therefore not allowed access. The credentials mode of an XMLHttpRequest is controlled by the withCredentials attribute.
:8100/#/app/completed:1 XMLHttpRequest cannot load http://example.com:5000/socket.io/?EIO=3&transport=polling&t=LIGH7BS. A wildcard '*' cannot be used in the 'Access-Control-Allow-Origin' header when the credentials flag is true. Origin 'http://localhost:8100' is therefore not allowed access. The credentials mode of an XMLHttpRequest is controlled by the withCredentials attribute.

我还尝试在我的快递中使用this npm 设置cors({origin:"*"})，但没有运气。

Answer 1

关于这个A wildcard '*' cannot be used in the 'Access-Control-Allow-Origin' header when the credentials flag is true.

将允许来源设置为固定域将解决此问题，目前，如果我没记错的话，http://example.org:5000。我认为您应该包括端口号。

我不明白的是为什么你有标题凭据。