# System.Net.Http

``` diff
 namespace System.Net.Http {
     [NullableAttribute((byte)0)]
     [NullableContextAttribute((byte)1)]
     public class HttpMethod : IEquatable<HttpMethod> {
+        public static HttpMethod Connect { get; }
     }
+    public sealed class HttpProtocolException : IOException {
+        [NullableContextAttribute((byte)2)]
+        public HttpProtocolException(long errorCode, string? message, Exception? innerException);
+        public long ErrorCode { get; }
+    }
 }
```

