Azure Functions 在函数内部调用 http post

问题描述

是否可以在 Azure Function 中创建 HTTP(s) 发布请求?我正在尝试创建一个自定义 webhook，它正在侦听一项服务，并在触发时使用 post 通过 HTTP 调用另一项服务.

Is it possible to create HTTP(s) post request inside Azure Function? I am trying to create a custom webhook that is listening to one service and when triggered then its calling another service over HTTP using post.

我的代码是这样的:

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
{

    BitbucketRequest data = await req.Content.ReadAsAsync<BitbucketRequest>();
    //DO STH WITH DATA TO GET e.g. USER STORY ID

    using(var client = new HttpClient()){
        client.BaseAddress = new Uri("https://SOME_TARGETPROCESS_URL/api/v1");
        var body = new { EntityState = new  { Id = 174 } };
        var result = await client.PostAsJsonAsync(
                       "/UserStories/7034/?resultFormat=json&access_token=MYACCESSTOKEN",
                       body);
        string resultContent = await result.Content.ReadAsStringAsync();
    }

    return req.CreateResponse<string>(HttpStatusCode.OK,"OKOK");
}

我想问题是当前 HttpRequestMessage 正在占用 web socket，我无法创建新的 Http Request.

I suppose the problem is that currently HttpRequestMessage is occupying web socket and I can not create new Http Request.

我在异常详情中发现的错误:

Errors that I found in Exceptions details:

• 底层连接已关闭:发送时发生意外错误.
• 无法从传输连接读取数据:现有连接被远程主机强行关闭.
• 套接字异常错误代码:10054

推荐答案

适用于在 Azure 函数中搜索 HttpClient 时登陆此处的其他任何人.

For anyone else who lands here when searching for HttpClient in Azure functions.

https://docs.microsoft.com/en-我们/azure/azure-functions/manage-connections

// Create a single, static HttpClient
private static HttpClient httpClient = new HttpClient();

public static async Task Run(string input)
{
    var response = await httpClient.GetAsync("https://example.com");
    // Rest of function
}

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