internal void FallbackToHTTP1()
{
if (this.implementation == null)
{
return;
}
this.implementation = new OverHTTP1(this, this.implementation.Uri, this.implementation.Origin, this.implementation.Protocol);
this.implementation.StartOpen();
}
/// <summary>
/// Creates a WebSocket instance from the given uri, protocol and origin.
/// </summary>
/// <param name="uri">The uri of the WebSocket server</param>
/// <param name="origin">Servers that are not intended to process input from any web page but only for certain sites SHOULD verify the |Origin| field is an origin they expect.
/// If the origin indicated is unacceptable to the server, then it SHOULD respond to the WebSocket handshake with a reply containing HTTP 403 Forbidden status code.</param>
/// <param name="protocol">The application-level protocol that the client want to use(eg. "chat", "leaderboard", etc.). Can be null or empty string if not used.</param>
/// <param name="extensions">Optional IExtensions implementations</param>
public WebSocket(Uri uri, string origin, string protocol
#if !UNITY_WEBGL || UNITY_EDITOR
, params IExtension[] extensions
#endif
)
{
this.Context = new LoggingContext(this);
#if !UNITY_WEBGL || UNITY_EDITOR
this.Extensions = extensions;
#if !BESTHTTP_DISABLE_ALTERNATE_SSL && !BESTHTTP_DISABLE_HTTP2
if (HTTPManager.HTTP2Settings.WebSocketOverHTTP2Settings.EnableWebSocketOverHTTP2 && HTTPProtocolFactory.IsSecureProtocol(uri))
{
// Try to find a HTTP/2 connection that supports the connect protocol.
var con = BestHTTP.Core.HostManager.GetHost(uri.Host).GetHostDefinition(Core.HostDefinition.GetKeyFor(new UriBuilder("https", uri.Host, uri.Port).Uri
#if !BESTHTTP_DISABLE_PROXY
, GetProxy(uri)
#endif
)).Find(c => {
var httpConnection = c as HTTPConnection;
var http2Handler = httpConnection?.requestHandler as Connections.HTTP2.HTTP2Handler;
return(http2Handler != null && http2Handler.settings.RemoteSettings[Connections.HTTP2.HTTP2Settings.ENABLE_CONNECT_PROTOCOL] != 0);
});
if (con != null)
{
HTTPManager.Logger.Information("WebSocket", "Connection with enabled Connect Protocol found!", this.Context);
var httpConnection = con as HTTPConnection;
var http2Handler = httpConnection?.requestHandler as Connections.HTTP2.HTTP2Handler;
this.implementation = new OverHTTP2(this, http2Handler, uri, origin, protocol);
}
}
#endif
if (this.implementation == null)
{
this.implementation = new OverHTTP1(this, uri, origin, protocol);
}
#else
this.implementation = new WebGLBrowser(this, uri, origin, protocol);
#endif
// Under WebGL when only the WebSocket protocol is used Setup() isn't called, so we have to call it here.
HTTPManager.Setup();
}