1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
| // Copyright 2009 The Go Authors. All rights reserved.
| // Use of this source code is governed by a BSD-style
| // license that can be found in the LICENSE file.
|
| package net
|
| import "syscall"
|
| func maxListenerBacklog() int {
| fd, err := open("/proc/sys/net/core/somaxconn")
| if err != nil {
| return syscall.SOMAXCONN
| }
| defer fd.close()
| l, ok := fd.readLine()
| if !ok {
| return syscall.SOMAXCONN
| }
| f := getFields(l)
| n, _, ok := dtoi(f[0])
| if n == 0 || !ok {
| return syscall.SOMAXCONN
| }
| // Linux stores the backlog in a uint16.
| // Truncate number to avoid wrapping.
| // See issue 5030.
| if n > 1<<16-1 {
| n = 1<<16 - 1
| }
| return n
| }
|
|
