英文:
Can you target a specific port using icmp?
问题
我相信标题已经很明确了，但以防万一，我会进一步解释。
我正在使用Go编写一个函数，该函数使用icmp来检查特定服务是否正在运行。我从Go中实现的ping命令得到了这个想法。当我尝试使用命令行ping时，它无法解析127.0.0.1:8080，而函数也遵循相同的规则，这是有道理的。但是我是否可以使用icmp来检查该地址和端口，还是应该使用类似tcp的东西来定位一个端口？
现在我有这个简单的函数，我可以使用tcp，但我想知道是否可以使用icmp之类的东西。
func (c *Controller) Ping() error {
conn, connErr := net.Dial("ip4:icmp", c.APIServerIP)
if connErr != nil {
return connErr
}
conn.SetDeadline(time.Now().Add(3 * time.Second))
defer conn.Close()
return nil
}
英文:
I believe the title is pretty self explanatory, but just in case, I'll explain further.
I am writing a function in Go that uses icmp to check if a particular service is running. I got this idea from ping implemented in Go. When I try command line ping, it can not resolve 127.0.0.1:8080, and the function follows suit, which makes sense. But can I use icmp to check that address and port with something I missing? Or should I just stick something like tcp to target a port?
Right now I have this simple function, and I could just use tcp, but I'm curious if I could use something like icmp.
func (c *Controller) Ping() error {
conn, connErr := net.Dial("ip4:icmp", c.APIServerIP)
if connErr != nil {
return connErr
}
conn.SetDeadline(time.Now().Add(3 * time.Second))
defer conn.Close()
return nil
}
答案1
得分: 4
不。ICMP中没有端口。
如果你想知道特定的TCP服务器是否正在运行，尝试连接到它。
英文:
No. There are no ports in ICMP.
If you want to know whether a specific TCP server is running, try to connect to it.
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