common: remove unnecessary logs

common/conn/conn.go

@@ -5,8 +5,6 @@ import (
 	"io"
 	"net"
 	"time"
-
-	"github.com/nadoo/glider/common/log"
 )
 
 // UDPBufSize is the size of udp buffer
@@ -85,7 +83,6 @@ func TimedCopy(dst net.PacketConn, target net.Addr, src net.PacketConn, timeout
 func OutboundIP() string {
 	conn, err := net.Dial("udp", "8.8.8.8:80")
 	if err != nil {
-		log.F("get outbound ip error: %s", err)
 		return ""
 	}
 	defer conn.Close()

dns/client.go

@@ -90,7 +90,7 @@ func (c *Client) Exchange(reqBytes []byte, clientAddr string, preferTCP bool) ([
 		}
 	}
 
-	// add to cache
+	// add to cache only when there's a valid ip address
 	if len(ips) != 0 {
 		c.cache.Put(getKey(resp.Question), respBytes, ttl)
 	}

proxy/http/http.go

@@ -195,7 +195,7 @@ func (s *HTTP) servHTTPS(method, requestURI, proto string, c net.Conn) {
 		return
 	}
 
-	c.Write([]byte("HTTP/1.0 200 Connection established\r\n\r\n"))
+	c.Write([]byte("HTTP/1.1 200 Connection established\r\n\r\n"))
 
 	log.F("[http] %s <-> %s [c]", c.RemoteAddr(), requestURI)