asp.netiiswebsocketsignalrsignalr.client
SignalR Client returns HTTP error 400 Bad request when websocket is used
I am using a SignalR Client connection using HubConnection. When calling Start(), an System.Net.WebException is thrown with the following message:
The remote server returned an error: (400) Bad Request.
The server response is:
Not a valid web socket request.
I am running Windows Server 2012 R2 with IIS 8.5
What could be the problem?
Solution
The problem was with the configuration of IIS.
You have to install the WebSocket Protocol support in order to connect to SignalR using WebSockets.
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