feat: add http client

[ZacHooper]

Noticed that someone else recently pushed a commit with an HTTP client. It looks like I've taken a slightly different approach, so making a PR so it's hopefully not wasted effort 😄. Might be able to merge them a bit or just close mine.

Mojo HTTP Client

• Added a HTTP client using only Mojo and libc external calls.
• Adds a fix for the addrinfo struct on Macos. Previously, making the getaddrinfo call would return ip address.
  • Thanks to @thatstoasty for the heads up on the fix for the issue.

Haven't really tested beyond get requests, but is working making requests to httpbin.org and google.com currently.

[thatstoasty]

I'm glad some of my work on mojo-http-client was able to help with this!

[saviorand]

Woah, great teamwork! Will review today, I think we can combine this with the other code that was already merged and get an even better implementation 💪

[saviorand]

@ZacHooper made a couple changes to bring this in line with latest state on main and merge with the other client implementation. What do you think? Love the create_connection function. I didn't compare the performance of two implementations though. But the current simple test is passing on both.

[ZacHooper]

Awesome looks good to me! 😄 Ran a couple requests against httpbin and working well.

Did notice one thing though. Not sure if I'm using the HTTPRequest/URI structs wrong but found I needed to add the port to the URL or it caused compiler error.

Good

var req = HTTPRequest(
        URI("http://www.httpbin.org:80/status/300"),
        req_str,
        RequestHeader(req_str),
    )

Bad

var req = HTTPRequest(
        URI("http://www.httpbin.org/status/300"),
        req_str,
        RequestHeader(req_str),
    )

[SchmittB]

The unified code from the two implementation looks good, it is more robust and better looking than my original PR for sure. Congrats !

[saviorand]

@ZacHooper just pushed a fix to properly handle URLs without a port and encode requests. Also added a simple test for external calls. Can you try again? The URI struct needs quite some improvement, haha. Also I realized a decode method for incoming responses would be helpful, not in scope of this PR though. If everything works I'll merge. Thanks a ton!

[ZacHooper]

Yep working great. Much easier to write the request now 😄.

[saviorand]

Perfect! Done merged.