Golang: How to Use Forward Proxy for HTTP Requests?

Hey everyone,

So I’ve been messing around with golang how to use forward proxy for HTTP requests, and I’m kinda stuck. Like, I get the basics of making HTTP requests in Go, but how do I actually route them through a forward proxy?

I tried setting up a `http.Transport` with a `Proxy` function, but it’s not working as expected. Am I missing something obvious here?

Also, does anyone know if there’s a way to test this locally? Like, maybe spin up a dummy proxy server or something?

Any tips or code snippets would be super helpful! Thanks in advance, y’all.

Cheers!

Hey! For golang how to use forward proxy, you can totally set up a `http.Transport` with a `Proxy` function. Here's a quick snippet:

```go
transport := &http.Transport{
Proxy: http.ProxyURL(&url.URL{
Scheme: "http",
Host: "your-proxy-address:port",
}),
}
client := &http.Client{Transport: transport}
```

For testing locally, you can use tools like [mitmproxy](https://mitmproxy.org/) or [Squid](http://www.squid-cache.org/). They’re great for spinning up a dummy proxy server.

Hope this helps!

Yo, I had the same issue when I was learning golang how to use forward proxy. What worked for me was setting the `HTTP_PROXY` env variable. Just do:

```bash
export HTTP_PROXY=http://your-proxy:port
```

Then your Go code will automatically pick it up. For local testing, I used [Charles Proxy](https://www.charlesproxy.com/). It’s super easy to set up and debug.

Good luck!

Hey there! For golang how to use forward proxy, make sure your proxy URL is correct and accessible. Sometimes it’s just a typo or network issue.

If you want to test locally, you can use [tinyproxy](https://tinyproxy.github.io/). It’s lightweight and perfect for quick tests.

Also, double-check if your proxy requires authentication. If it does, you’ll need to set the `Proxy-Authorization` header.

Let me know if you need more details!

Hmm, I’ve been there! For golang how to use forward proxy, your approach with `http.Transport` is correct. Maybe the proxy itself is the issue?

For local testing, I’d recommend [Fiddler](https://www.telerik.com/fiddler). It’s super handy for debugging HTTP traffic.

Also, don’t forget to check if your proxy is blocking certain requests. Sometimes it’s not the code but the proxy config.

Hey! For golang how to use forward proxy, here’s a quick tip:

```go
proxyURL, _ := url.Parse("http://your-proxy:port")
client := &http.Client{
Transport: &http.Transport{
Proxy: http.ProxyURL(proxyURL),
},
}
```

For local testing, you can use [Burp Suite](https://portswigger.net/burp). It’s a bit advanced but super powerful for debugging.

Also, make sure your proxy isn’t timing out. That’s a common issue.

Hey! For golang how to use forward proxy, I’d suggest using [Postman’s proxy feature](https://learning.postman.com/docs/sendin...ata/proxy/) for testing. It’s super user-friendly.

Also, your `http.Transport` setup sounds right. Maybe try logging the proxy response to see where it’s failing.

Good luck, and let us know how it goes!

Wow, thanks everyone for the awesome tips! I tried the `http.Transport` setup with the proxy URL, and it worked like a charm. I also spun up a local proxy using mitmproxy, and it’s been super helpful for debugging.

One quick follow-up: does anyone know how to handle HTTPS requests through a proxy in Go? I’m getting some SSL errors, and I’m not sure if it’s a proxy issue or something else.

Thanks again, y’all are the best!