Avoid enforing Socks4 VN value

MihaZupan · MihaZupan · commit 95400e21568c · 2021-04-16T10:42:18.000+02:00
diff --git a/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/SocksHelper.cs b/src/libraries/System.Net.Http/src/System/Net/Http/SocketsHttpHandler/SocksHelper.cs
@@ -298,7 +298,6 @@ private static async ValueTask EstablishSocks4TunnelAsync(Stream stream, bool is
                 // +----+----+----+----+----+----+----+----+
                 //    1    1      2              4
                 await ReadToFillAsync(stream, buffer.AsMemory(0, 8), async).ConfigureAwait(false);
-                VerifyProtocolVersion(ProtocolVersion4, buffer[0]);
 
                 switch (buffer[1])
                 {

Original file line number	Diff line number	Diff line change
`@@ -298,7 +298,6 @@ private static async ValueTask EstablishSocks4TunnelAsync(Stream stream, bool is`
`298`	`298`	`// +----+----+----+----+----+----+----+----+`
`299`	`299`	`// 1 1 2 4`
`300`	`300`	`await ReadToFillAsync(stream, buffer.AsMemory(0, 8), async).ConfigureAwait(false);`
`301`		`- VerifyProtocolVersion(ProtocolVersion4, buffer[0]);`
`302`	`301`
`303`	`302`	`switch (buffer[1])`
`304`	`303`	`{`