FsHttp is a .Net HTTP client library for C# and F#. It aims for describing and executing HTTP requests in convenient ways that can be used in production and interactive environments.

The design principle behind FsHttp is:

Specify common HTTP requests in a most convenient and readable way, while still being able to access the underlying .Net Http representations for covering unusual cases.

FsHttp is developed and maintained by @ronaldschlenker and @dawedawe. Feel free to leave us a message.

Sponsoring

Want to help keep FsHttp alive? Then help keep F# and its ecosystem alive by supporting one of the following developers:

• @edgarfgp. Why? E.g. for "Amplifying F#", for bringing people together, for his support and his work in the F# community.
• @TheAngryByrd. Why? E.g. for maintaining Ionidem and many, many more.
• @AngelMunoz. Why? E.g. for his work in Fable (The F# to JS compiler), his passion and support.
• @dawedawe and @nojaf. Why? E.g. for Fantomas and their support in the F# community.
• @PawelStadnicki. Why? E.g. for his attempt to push F# forward in data science.

For sure, there are many more. If you think someone should appear on that list, leave us a message!

A Simple Example

An example in F#:

#r "nuget: FsHttp"

open FsHttp

http {
    POST "https://reqres.in/api/users"
    CacheControl "no-cache"
    body
    jsonSerialize
        {|
            name = "morpheus"
            job = "leader"
        |}
}
|> Request.send

An example in C#:

#r "nuget: FsHttp"

using FsHttp.CSharp;

await "https://reqres.in/api/users".Post()
    .CacheControl("no-cache")
    .Body()
    .JsonSerialize(new
        {
            name = "morpheus",
            job = "leader"
        }
    )
    .SendAsync();

Documentation

• 📖 Please see FsHttp Documentation site for a detailed documentation.
• 🧪 In addition, have a look at the Integration Tests that show various library details.

Release Notes / Migrating to new versions

• See https://www.nuget.org/packages/FsHttp#release-body-tab
• For different upgrade paths, please read the Migrations section in the docu.

GitHub

Please see FsHttp on GitHub.

Building

.Net SDK:

You need to have the latest .Net SDK installed, which is specified in ./global.json.

Build Tasks

There is a F# build script (./build.fsx) that can be used to perform several build tasks from command line.

For common tasks, there are powershell files located in the repo root:

• ./test.ps1: Runs all tests (sources in ./src/Tests).
  • You can pass args to this task. E.g. for executing only some tests: ./test.ps1 --filter Name~'Response Decompression'
• ./docu.ps1: Rebuilds the FsHttp documentation site (sources in ./src/docs; output goes to ./docs).
• ./docu-watch.ps1: Run it if you are working on the documentation sources, and want to see the result in a browser.
• ./publish.ps1: Publishes all packages (FsHttp and it's integration packages for Newtonsoft and FSharp.Data) to NuGet.
  • Always have a look at ./src/Directory.Build.props and keep the file up-to-date.

Credits

• Parts of the code is taken from the HTTP utilities of FSharp.Data.
• Credits to all critics, supporters, contributors, promoters, users, and friends.