从HttpWebRequest转换为HttpClient

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英文:

Converting from HttpWebRequest to HttpClient

问题

I am working with the Verizon ThingSpace API, found here.

我正在使用Verizon ThingSpace API，可以在这里找到。

I am attempting to generate the OAuth token. The API documentation provides a cURL example:

我正在尝试生成OAuth令牌。API文档提供了一个cURL示例：

curl -X POST -d "grant_type=client_credentials" -H "Authorization: Basic BASE64_ENCODED_APP_KEY_AND_SECRET" -H "Content-Type: application/x-www-form-urlencoded" "/api/ts/v1/oauth2/token"

I have been able to successfully replicate the cURL command in C# using the older HTTPWebRequest, but have failed to do so using the newer HttpClient.

我已成功在C#中使用较旧的HTTPWebRequest复制了cURL命令，但尝试使用较新的HttpClient时失败了。

I get a return value of:

我得到了一个返回值：

{"error":"invalid_request","error_description":"Invalid grant_type parameter or parameter missing"}

What is the proper way of replicating the cURL example in the API docs using the newer HttpClient class in C#? I have reviewed this answer, but it doesn't address the issue I am having with the grant_type.

如何使用较新的C# HttpClient类复制API文档中的cURL示例的正确方法是什么？我已经查看了这个答案，但它没有解决我在grant_type方面遇到的问题。

Edit:

Here is the HTTPWebRequest implementation, which is working as expected:

以下是HTTPWebRequest的实现，它按预期工作：

  1. public static void API_Login()
  2. {
  3.     Console.WriteLine("API Request ----------------------------------");
  4.     string url = @"https://thingspace.verizon.com/api/ts/v1/oauth2/token";
  5.     var httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
  6.     httpWebRequest.Method = "POST";
  7.     httpWebRequest.ContentType = "application/x-www-form-urlencoded";
  8.     httpWebRequest.Headers.Add("Authorization", $"Basic {encodedKeyAndSecret}");
  9.     var body = "grant_type=client_credentials";
  10.     var data = Encoding.ASCII.GetBytes(body);
  11.     httpWebRequest.ContentLength = data.Length;
  12.     using (var stream = httpWebRequest.GetRequestStream())
  13.     {
  14.         stream.Write(data, 0, data.Length);
  15.     }
  16.     var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
  17.     using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
  18.     {
  19.         var result = streamReader.ReadToEnd();
  20.         JsonObject jsonObject = (JsonObject)JsonObject.Parse(result);
  21.         apiToken = jsonObject["access_token"].ToString();
  22.     }
  23. }

And here is HttpClient implementation, which is not working correctly:

以下是HttpClient的实现，它无法正常工作：

  1. public async static void HttpClient_API_Login(string encodedKeyAndSecret)
  2. {
  3.     string url = @"https://thingspace.verizon.com/api/ts/v1/oauth2/token";
  4.     var client = new HttpClient();
  5.     var body = "grant_type=client_credentials";
  6.     var request = new HttpRequestMessage()
  7.     {
  8.         Method = HttpMethod.Post,
  9.         RequestUri = new Uri(url),
  10.         Headers =
  11.         {
  12.             { HttpRequestHeader.ContentType.ToString(), "application/x-www-form-urlencoded" },
  13.             { HttpRequestHeader.Authorization.ToString(), $"Basic {encodedKeyAndSecret}" },
  14.         },
  15.         Content = new StringContent(body)
  16.     };
  17.     var response = client.SendAsync(request).Result;
  18.     var sr = await response.Content.ReadAsStringAsync();
  19.     Console.WriteLine("response: " + sr);
  20. }
英文:

I am working with the Verizon ThingSpace api, found here.

I am attempting to generate the Oauth token. The API documentation provides a curl example:

  1. curl -X POST -d "grant_type=client_credentials" -H "Authorization: Basic BASE64_ENCODED_APP_KEY_AND_SECRET" -H "Content-Type: application/x-www-form-urlencoded" "/api/ts/v1/oauth2/token"

I have been able to successfully replicate the curl command in C# using the older HTTPWebRequest, but have failed to do so using the newer HttpClient.

I get a return value of:

  1. {"error":"invalid_request","error_description":"Invalid grant_type parameter or parameter missing"}

What is the proper way of replicating the curl example in the API docs using the newer HttpClient class in c#? I have reviewed this answer, but it doesn't address the issue I am having with the grant_type.

Edit:

Here is the HTTPWebRequest implementation, which is working as expected:

  1.   public static void API_Login()
  3. {
  5.     Console.WriteLine("API Request ----------------------------------");
  7.     string url = @https://thingspace.verizon.com/api/ts/v1/oauth2/token;
  9.     var httpWebRequest = (HttpWebRequest)WebRequest.Create(url);
  11.     httpWebRequest.Method = "POST";
  13.     httpWebRequest.ContentType = "application/x-www-form-urlencoded";
  15.     httpWebRequest.Headers.Add("Authorization", $"Basic {encodedKeyAndSecret}");
  17.     var body = "grant_type=client_credentials";
  19.     var data = Encoding.ASCII.GetBytes(body);
  21.     httpWebRequest.ContentLength = data.Length;
  25.     using (var stream = httpWebRequest.GetRequestStream())
  27.     {
  29.         stream.Write(data, 0, data.Length);
  31.     }
  35.     var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
  37.     using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
  39.     {
  41.         var result = streamReader.ReadToEnd();
  43.         JsonObject jsonObject = (JsonObject)JsonObject.Parse(result);
  45.         apiToken = jsonObject["access_token"].ToString();
  47.     }
  49. }

And here is HttpClient implementation, which is not working correctly:

  1.     public async static void HttpClient_API_Login(string encodedKeyAndSecret)
  3. {
  5.     string url = @https://thingspace.verizon.com/api/ts/v1/oauth2/token;
  7.     var client = new HttpClient();
  9.     var body = "grant_type=client_credentials";
  11.     var request = new HttpRequestMessage()
  13.     {
  15.         Method = HttpMethod.Post,
  17.         RequestUri = new Uri(url),
  19.         Headers =
  21.         {
  23.             { HttpRequestHeader.ContentType.ToString(), $"application/x-www-form-urlencoded" },
  25.             { HttpRequestHeader.Authorization.ToString(), $"Basic {encodedKeyAndSecret}" },
  27.         },
  29.         Content = new StringContent(body)
  31.     };
  35.     var response = client.SendAsync(request).Result;
  37.     var sr = await response.Content.ReadAsStringAsync();
  39.     Console.WriteLine("response: " + sr);
  41. }

答案1

得分: 0

以下是翻译好的部分：

"我已经通过以下方式自行解决了这个问题：

  1. public async static void HttpClient_API_Login(string encodedKeyAndSecret)
  2. {   
  3.     string url = @"https://thingspace.verizon.com/api/ts/v1/oauth2/token";
  4.     var client = new HttpClient();
  5.     var formData = new List<KeyValuePair<string, string>>
  6.     {
  7.         new KeyValuePair<string, string>("grant_type", "client_credentials")
  8.     };
  9.     var request = new HttpRequestMessage()
  10.     {
  11.         Method = HttpMethod.Post,
  12.         RequestUri = new Uri(url),
  13.         Headers =
  14.         {
  15.             { HttpRequestHeader.ContentType.ToString(), "application/x-www-form-urlencoded" },
  16.             { HttpRequestHeader.Authorization.ToString(), $"Basic {encodedKeyAndSecret}" },
  17.         },
  18.         Content = new FormUrlEncodedContent(body)
  19.     };
  20. }

问题是请求体应为表单内容，而不是字符串内容。"

英文:

I have since solved the issue on my own by changing the code as follows:

  1. public async static void HttpClient_API_Login(string encodedKeyAndSecret)

{

  1. string url = @https://thingspace.verizon.com/api/ts/v1/oauth2/token;
  3. var client = new HttpClient();
  6. var formData = new List&lt;KeyValuePair&lt;string, string&gt;&gt;
  8. {
  10.     new KeyValuePair&lt;string, string&gt;(&quot;grant_type&quot;, &quot;client_credentials&quot;)
  12. };
  14. var request = new HttpRequestMessage()
  16. {
  18.     Method = HttpMethod.Post,
  20.     RequestUri = new Uri(url),
  22.     Headers =
  24.     {
  26.         { HttpRequestHeader.ContentType.ToString(), $&quot;application/x-www-form-urlencoded&quot; },
  28.         { HttpRequestHeader.Authorization.ToString(), $&quot;Basic {encodedKeyAndSecret}&quot; },
  30.     },
  32.     Content = new FormUrlEncodedContent(body)
  34. };

The issue was that the body was string content, not form content.

huangapple
  • 本文由 发表于 2023年4月11日 05:27:53
  • 转载请务必保留本文链接：https://go.coder-hub.com/75980882.html
  • c#
  • oauth-2.0
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