How to send a POST request from a specific IP address?

Question

PHP

There are several external ip, how to send a request from a specific one?

Answer 1

You need to create a client with a specific dialer

localAddr, err := net.ResolveIPAddr("ip", "192.168.1.2")
if err != nil {
  panic(err)
}
 
localTCPAddr := net.TCPAddr{
    IP: localAddr.IP,
}
 
client := &http.Client{
  Transport: &http.Transport{
    Dial: (&net.Dialer{
      LocalAddr: localTCPAddr,
    }).Dial,
  },
}

Then send a request through the client

Answer 2

Raise the proxy which specify the desired address to the outside and send through it :)