gitee.com/ks-custle/core-gm@v0.0.0-20230922171213-b83bdd97b62c/grpc/internal/channelz/util_linux.go (about)

     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  }