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Nigel Sampson

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Patch Support in HttpClient

01 May 2012 by Nigel Sampson

Lately I’ve been working with the System.Net.Http.HttpClient originally from the WebAPI and part of what’s available to build Metro style apps in Windows 8. I really like the way the client has been designed and especially the async /await support.

One thing I noticed while working with the GitHub API was that while HttpClient supports the PATCH method there’s no nice helper methods like GetAsync or PostAsync, thankfully it’s very easy to put together so here’s some extension methods to add PatchAsync to HttpClient.

public static class HttpClientExtensions
{
    public async static Task<HttpResponseMessage> PatchAsync(this HttpClient client, string requestUri, HttpContent content)
    {
        var method = new HttpMethod("PATCH");

        var request = new HttpRequestMessage(method, requestUri)
        {
            Content = content
        };

        return await client.SendAsync(request);
    }

    public async static Task<HttpResponseMessage> PatchAsync(this HttpClient client, Uri requestUri, HttpContent content)
    {
        var method = new HttpMethod("PATCH");

        var request = new HttpRequestMessage(method, requestUri)
        {
            Content = content
        };

        return await client.SendAsync(request);
    }

    public async static Task<HttpResponseMessage> PatchAsync(this HttpClient client, string requestUri, HttpContent content, CancellationToken cancellationToken)
    {
        var method = new HttpMethod("PATCH");

        var request = new HttpRequestMessage(method, requestUri)
        {
            Content = content
        };

        return await client.SendAsync(request, cancellationToken);
    }

    public async static Task<HttpResponseMessage> PatchAsync(this HttpClient client, Uri requestUri, HttpContent content, CancellationToken cancellationToken)
    {
        var method = new HttpMethod("PATCH");

        var request = new HttpRequestMessage(method, requestUri)
        {
            Content = content
        };
        
        return await client.SendAsync(request, cancellationToken);
    }
}

Hope this helps people.

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