WIP SOCKS5 proxy

internal/utils/pipe.go

@@ -25,3 +25,15 @@ func Pipe(src, dst io.ReadWriter, atomicCounter *uint64) error {
 		}
 	}
 }
+
+func PipePair(rw1, rw2 io.ReadWriter, rw1WriteCounter, rw2WriteCounter *uint64) error {
+	errChan := make(chan error, 2)
+	go func() {
+		errChan <- Pipe(rw2, rw1, rw1WriteCounter)
+	}()
+	go func() {
+		errChan <- Pipe(rw1, rw2, rw2WriteCounter)
+	}()
+	// We only need the first error
+	return <-errChan
+}