gtsocial-umbx

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util_linux.go (969B)

      1 /*
      2  *
      3  * Copyright 2018 gRPC authors.
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *     http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  *
     17  */
     18 
     19 package channelz
     20 
     21 import (
     22 	"syscall"
     23 )
     24 
     25 // GetSocketOption gets the socket option info of the conn.
     26 func GetSocketOption(socket interface{}) *SocketOptionData {
     27 	c, ok := socket.(syscall.Conn)
     28 	if !ok {
     29 		return nil
     30 	}
     31 	data := &SocketOptionData{}
     32 	if rawConn, err := c.SyscallConn(); err == nil {
     33 		rawConn.Control(data.Getsockopt)
     34 		return data
     35 	}
     36 	return nil
     37 }