Setting up proxy for HTTP client

http proxy request go
laurent picture laurent · Feb 2, 2013 · Viewed 62.1k times · Source

I'm trying to setup the HTTP client so that it uses a proxy, however I cannot quite understand how to do it. The documentation has multiple reference to "proxy" but none of the functions seem to allow to define the proxy. What I need is something like this:

client := &http.Client{}
client.SetProxy("someip:someport") // pseudo code
resp, err := client.Get("http://example.com") // do request through proxy

Any idea how to do this in Go?

Answer

voidlogic picture voidlogic · Feb 2, 2013

lukad is correct, you could set the HTTP_PROXY environment variable, if you do this Go will use it by default.

Bash:

export HTTP_PROXY="http://proxyIp:proxyPort"

Go:

os.Setenv("HTTP_PROXY", "http://proxyIp:proxyPort")

You could also construct your own http.Client that MUST use a proxy regardless of the environment's configuration:

proxyUrl, err := url.Parse("http://proxyIp:proxyPort")
myClient := &http.Client{Transport: &http.Transport{Proxy: http.ProxyURL(proxyUrl)}}

This is useful if you can not depend on the environment's configuration, or do not want to modify it.

You could also modify the default transport used by the "net/http" package. This would affect your entire program (including the default HTTP client).

proxyUrl, err := url.Parse("http://proxyIp:proxyPort")
http.DefaultTransport = &http.Transport{Proxy: http.ProxyURL(proxyUrl)}

Related questions

How do I make HttpURLConnection use a proxy?

If I do this... conn = new URL(urlString).openConnection(); System.out.println("Proxy? " + conn.usingProxy()); it prints Proxy? false The problem is, I am behind a proxy. Where does the JVM get its proxy information from on Windows? How do …

Read More
How can I use an http proxy with node.js http.Client?

I want to make an outgoing HTTP call from node.js, using the standard http.Client. But I cannot reach the remote server directly from my network and need to go through a proxy. How do I tell node.js …

Read More
Using an HTTP PROXY - Python

I familiar with the fact that I should set the HTTP_RPOXY environment variable to the proxy address. Generally urllib works fine, the problem is dealing with urllib2. >>> urllib2.urlopen("http://www.google.com").read() returns urllib2.…

Read More