example http server对我不起作用。源代码:

package main

import (
    "fmt"
    "net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hi there, I love %s!", r.URL.Path[1:])
}

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe("127.0.0.1:8080", nil)
}

当我尝试连接时，我得到的只是:

$ curl 127.0.0.1:8080
curl: (7) Failed to connect to 127.0.0.1 port 8080: Operation timed out
$ nc -v -G 5 127.0.0.1 8080
nc: connectx to 127.0.0.1 port 8080 (tcp) failed: Operation timed out

当 nc 尝试连​​接时，tcpdump 只显示 SYN 数据包:

$ tcpdump -i lo0 port 8080
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on lo0, link-type NULL (BSD loopback), capture size 262144 bytes
18:21:30.906638 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118569352 ecr 0,sackOK,eol], length 0
18:21:31.006824 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118569452 ecr 0,sackOK,eol], length 0
18:21:31.106989 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118569552 ecr 0,sackOK,eol], length 0
18:21:31.208141 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118569653 ecr 0,sackOK,eol], length 0
18:21:31.308288 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118569753 ecr 0,sackOK,eol], length 0
18:21:31.408336 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118569853 ecr 0,sackOK,eol], length 0
18:21:31.609143 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118570053 ecr 0,sackOK,eol], length 0
18:21:32.011215 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118570453 ecr 0,sackOK,eol], length 0
18:21:32.812512 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118571253 ecr 0,sackOK,eol], length 0
18:21:34.414686 IP localhost.52799 > localhost.http-alt: Flags [S], seq 3375761924, win 65535, options [mss 16344,nop,wscale 5,nop,nop,TS val 118572853 ecr 0,sackOK,eol], length 0

这是服务器端 dtruss 输出的最后一部分(从套接字调用开始):

socket(0x2, 0x1, 0x0)            = 3 0
fcntl(0x3, 0x2, 0x1)             = 0 0
fcntl(0x3, 0x3, 0x0)             = 2 0
fcntl(0x3, 0x4, 0x6)             = 0 0
setsockopt(0x3, 0xFFFF, 0x20)            = 0 0
setsockopt(0x3, 0xFFFF, 0x4)             = 0 0
bind(0x3, 0xC8200BA6AC, 0x10)            = 0 0
listen(0x3, 0xFDE8, 0x10)                = 0 0
kqueue(0x3, 0xFDE8, 0x10)                = 4 0
fcntl(0x4, 0x2, 0x1)             = 0 0
kevent(0x4, 0xC8200558C0, 0x2)           = 0 0
getsockname(0x3, 0xC82005592C, 0xC820055928)             = 0 0
accept(0x3, 0xC820055AA4, 0xC820055A94)          = -1 Err#35
kevent(0x4, 0x0, 0x0)            = 0 0
select(0x0, 0x0, 0x0, 0x0, 0x700000080DE8)               = 0 0

当我运行 nc 时什么都没有出现，所以它甚至没有注意到连接尝试。

我没有启用防火墙，其他一切正常，只有 Go 程序有这个问题(特别是我不能使用 docker-machine)

我该如何解决？

编辑: 我假设 #Err35 是:

#define EDEADLK     35  /* Resource deadlock would occur */

...哇？

编辑2:

• go:版本 go1.6 darwin/amd64
• OSX:10.11.4

服务器没有退出，它无限期地监听。

编辑3:

我尝试了“go build”和“go run - 没有区别

使用 localhost 而不是 127.0.0.1 - 没有区别

使用 w.Write([]byte(fmt.Sprintf("Hi there, I love %s!", r.URL.Path[1:])) 代替 - 没有区别。顺便说一句 - 它说 nc: connectx to 127.0.0.1 port 8080 (tcp) failed: Operation timed out，所以连接尝试超时，而不是读取

ifconfig -a 和 netstat -r 输出:https://gist.github.com/mabn/ed171f180725b563d32bb86d5ec61988

最佳答案

我想看看 'ifconfig -a' 的输出。

这听起来像是本地配置问题；我无法在 OS X 10.11.4、Go 1.6 上重现此内容

我的 W.A.G 是隧道设备实际上使用的是 127.0.0.1 而不是环回设备。

关于macos - go: http 服务器在 osx 上不工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36532359/