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go-frameproto
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@ -8,6 +8,70 @@ Online documentation, which includes examples, can be found at: http://godoc.org
[![GoDoc](https://godoc.org/sourcecode.social/reiver/go-frameproto?status.svg)](https://godoc.org/sourcecode.social/reiver/go-frameproto)
## Explanation
The **Frames Protocol**, also known **Farcaster Frames**, is a simple web-based technology used for making applications.
It uses HTML without really using HTML, so that **Frames Protocol** applications work with clients that don't support the **Frames Protocol**.
The fall-back being OpenGraph.
Really, a **Frames Protocol** application is mostly made up of **images** and **buttons** on the client-side (that are specified using HTML `<meta>` element) with a back-end that gets HTTP `POST`ed to, which can return a new "page" with an **image** and **buttons**, and so on and so on.
This choice of just being mostly **images** and **buttons** actually makes the **Frames Protocol** simpler to create a viewer from scatch.
No need to implement all Web technologies.
No need to worry about security and privacy holes that Web technologies introduce.
Although the **Frames Protocol** _could_ be used outside of **Farcaster**, at the time of writing, **Farcaster** clients (such as **Warpcast**) are the only major (client-side) platform to support it.
(The server-side of the <strong>Frames Protocol</strong>, which is called a <strong>Frame Server</strong>, is an just HTTP resource — which some might loosely call an HTTP (or HTTP) URL.)
Enough talking — let's look at some code.
Here is the client-side of a **Frames Protocol** application:
```html
<meta property="fc:frame" content="vNext" />
<meta property="fc:frame:image" content="https://example.com/path/to/image.png" />
<meta property="og:image" content="https://example.com/path/to/image.png" />
```
It is just HTML.
Although this would need to be embedded into an HTML document, so really it would be something more like this:
```html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
<head>
<meta charset="utf-8" />
<meta property="fc:frame" content="vNext" />
<meta property="fc:frame:image" content="https://example.com/path/to/image.png" />
<meta property="og:image" content="https://example.com/path/to/image.png" />
</head>
<body>
</body>
</html>
```
This package provides you tools for creating this.
For example:
```golang
func ServeHTTP(responseWriter http.ResponseWriter, request *http.Request) {
// ...
frameproto.WriteFrame(responseWriter, frameproto.VersionVNext)
frameproto.WriteFrameImage(responseWriter, frameImageURL)
// ...
}
```
## Import
To import package **frameproto** use `import` code like the follownig: