使用C＃HttpClient API和邮递员测试之间的区别？客户端调用适用于邮递员，但不适用于C＃httpClient getAsync [英] Differences between using C# HttpClient API and the postman testing? Client call works on postman, but not C# httpClient getAsync

问题描述

我正在测试REST API帖子，并且在Postman上尝试时效果很好。但是，在某些情况下（与发布XML数据有关），如果我使用HttpClient API进行发布，则会收到以下错误：

I am testing a REST API post, and it works well when I try it on Postman. However, in some scenario (related to the posting XML data) if I post with HttpClient API, I would receive the following error:

读取传输连接中的数据：远程主机强行关闭了现有连接。

Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.

但是相同的XML内容在邮递员的状态为OK且响应正确。

But the same XML content works fine on Postman with status OK and proper response.

使用C＃HttpClient API和邮递员测试之间有什么区别？如何配置我的API调用以使其与邮递员的行为相匹配？

What is the differences between using the C# HttpClient API and the postman testing? How can I configure my API call to match with the behavior on postman?

在这里我附上了源代码和邮递员屏幕截图

Here I attached the source code, and the Postman screenshot

public void createLoan()
{
    string baseCreateLoanUrl = @"https://serverhost/create?key=";
    var strUCDExport = XDocument.Load(@"C:\CreateLoan_testcase.xml");

    using (var client = new HttpClient())
    {
        var content = new StringContent(strUCDExport.ToString(), Encoding.UTF8, Mediatype);
        string createLoanApi = string.Concat(baseCreateLoanUrl, APIKey);

        try
        {
            var response = client.PostAsync(createLoanApi, content).Result;
        }
        catch (Exception ex)
        {
            MessageBox.Show("Error Happened here...");
            throw;
        }

        if (response.IsSuccessStatusCode)
        {
            // Access variables from the returned JSON object
            string responseString = response.Content.ReadAsStringAsync().Result;
            JObject jObj = JObject.Parse(responseString);

            if (jObj.SelectToken("failure") == null)
            {
                // First get the authToken
                string LoanID = jObj["loanStatus"]["id"].ToString();
                MessageBox.Show("Loan ID: " + LoanID);
            }
            else
            {
                string getTokenErrorMsg = string.Empty;

                JArray errorOjbs = (JArray) jObj["failure"]["errors"];
                foreach (var errorObj in errorOjbs)
                {
                    getTokenErrorMsg += errorObj["message"].ToString() + Environment.NewLine;
                }
                getTokenErrorMsg.Dump();
            }
        }
    }

推荐答案

感谢Nard的评论，比较标题后，我发现我的客户标题有以下问题：
期望：100-继续

Thanks for Nard's comment, after comparing the header, I found the issue my client header has this: Expect: 100-continue

而邮递员

一旦我使用ServicePointManager删除了它：

Once I removed this by using the ServicePointManager:

ServicePointManager.Expect100Continue = false;

现在一切似乎都很好。感谢所有输入！

Everything seems fine now. Thanks all the input!

这篇关于使用C＃HttpClient API和邮递员测试之间的区别？客户端调用适用于邮递员，但不适用于C＃httpClient getAsync的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！