[C＃中的Asana API 403响应

Question

我正在尝试实现与Asana API兼容的Xamarin应用。

我已经成功实现了Asana文档here中记录的OAuth ...至少我认为它是成功的。我从HTTP状态为“ OK”的HTTPResponse中的令牌端点获取访问令牌。

[但是当我转过身，尝试使用相同的访问令牌进行API调用时，出现403禁止错误。我在浏览器中尝试了相同的API调用（登录到Asana后），并且运行良好，这使我相信我确实可以访问该资源，因此对我的请求授权必定存在问题。] >

有问题的API调用是（documented here）：https://app.asana.com/api/1.0/workspaces。

我的C＃代码如下（缩写为相关部分，并假定ACCESS_TOKEN包含我从令牌交换端点获得的访问令牌）：

HttpClient client = new HttpClient();
client.BaseAddress = "https://app.asana.com/api/1.0";
client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", ACCESS_TOKEN);
client.DefaultRequestHeaders.Add("Accept", "application/json");
然后我在以下功能中使用此HttpClient（命名为client）：

// Returns a list of the Asana workspace names for the logged in user.
private async Task<List<string>> GetWorkspacesAsync()
{
    List<string> namesList = new List<string>();

    // Send the HTTP Request and get a response.
    this.UpdateToken(); // Refreshes the token if needed using the refresh token.
    using (HttpResponseMessage response = await client.GetAsync("/workspaces"))
    {
        // Handle a bad (not ok) response.
        if (response.StatusCode != HttpStatusCode.OK)
        {
            //  !!!THIS KEEPS TRIGGERING WITH response.StatusCode AS 403 Forbidden!!!

            // Set up a stream reader to read the response.
            // This is for TESTING ONLY
            using (StreamReader reader = new StreamReader(await response.Content.ReadAsStreamAsync()))
            {
                // Extract the json object from the response.
                string content = reader.ReadToEnd();
                Debug.WriteLine(content);
            }

            throw new HttpRequestException("Bad HTTP Response was returned.");
        }

        // If execution reaches this point, the Http Response returned with code OK.

        // Set up a stream reader to read the response.
        using (StreamReader reader = new StreamReader(await response.Content.ReadAsStreamAsync()))
        {
            // Extract the json object from the response.
            string content = reader.ReadToEnd();
            JsonValue responseJson = JsonValue.Parse(content);

            foreach (JsonValue workspaceJson in responseJson["data"])
            {
                string workspaceName = workspaceJson["name"];
                Debug.WriteLine("Workspace Name: " + workspaceName);

                namesList.Add(workspaceName);
            }
        }
    }

    // I have other awaited interactions with app storage in here, hence the need for the function to be async.

    return namesList;
}
    

我正在尝试实现与Asana API兼容的Xamarin应用。我已经成功实现了Asana文档中记录的OAuth，至少我认为它是成功的。我...

Answer 1

最后找到答案。看来我没有正确使用HttpClient；一个微妙的事物，应该是等效的，但不是由于实现方式而定。