Fix all lint errors

proxy/timeoutrwc.go

@@ -6,22 +6,27 @@ import (
 	"time"
 )
 
+// TimeoutReadWriteCloser sets timeouts for read/write into underlying
+// network connection.
 type TimeoutReadWriteCloser struct {
 	conn         net.Conn
 	readTimeout  time.Duration
 	writeTimeout time.Duration
 }
 
+// Read reads from connection
 func (t *TimeoutReadWriteCloser) Read(p []byte) (int, error) {
-	t.conn.SetReadDeadline(time.Now().Add(t.readTimeout))
+	t.conn.SetReadDeadline(time.Now().Add(t.readTimeout)) // nolint: errcheck, gas
 	return t.conn.Read(p)
 }
 
+// Write writes into connection.
 func (t *TimeoutReadWriteCloser) Write(p []byte) (int, error) {
-	t.conn.SetWriteDeadline(time.Now().Add(t.writeTimeout))
+	t.conn.SetWriteDeadline(time.Now().Add(t.writeTimeout)) // nolint: errcheck, gas
 	return t.conn.Write(p)
 }
 
+// Close closes underlying connection.
 func (t *TimeoutReadWriteCloser) Close() error {
 	return t.conn.Close()
 }