StatusCode: 400, ReasonPhrase: 'Bad Request' - calling addCustomer web api via app

Ying Kit Li 1

I have faced a connection error to azure from my developing xamarion forms app after I tried to add an email function of google SMTP to the app. I used my own google account's credentials to send email and allow Less Secure Apps in google account setting. However, after I successfully sent the first email, Google blocked the app and surprisingly azure also could not get the uploaded data from the app. I started the debug mode in visual studio and got the following messages:

{StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
Date: Wed, 17 Nov 2021 12:30:01 GMT
Server: Microsoft-IIS/10.0
Set-Cookie: ARRAffinity=ee7a1ed55adb83304d202ee1fe723b7adba7ac178c79e64e7f03ca620a2fd2b7;Path=/;HttpOnly;Secure;Domain=datingbirdapi.azurewebsites.net
Set-Cookie: ARRAffinitySameSite=ee7a1ed55adb83304d202ee1fe723b7adba7ac178c79e64e7f03ca620a2fd2b7;Path=/;HttpOnly;SameSite=None;Secure;Domain=datingbirdapi.azurewebsites.net
X-Android-Received-Millis: 1637152201237
X-Android-Response-Source: NETWORK 400
X-Android-Selected-Protocol: http/1.1
X-Android-Sent-Millis: 1637152201171
X-Powered-By: ASP.NET
Content-Length: 321
Content-Type: application/problem+json; charset=utf-8
}}

I finally made the email work by setting app password in google. But the azure cloud still cannot get data from my app.

AgaveJoe 26,191 Reputation points

2021-11-17T14:35:43.673+00:00

A 400 response means there is a problem with the client making the HTTP request. The community needs the service docs and the client code to figure out what's wrong on the client.

Ying Kit Li 1

        public async Task<HttpResponseMessage> SaveCustomerAsync(Customer item, bool isNewItem = false)
        {

            Uri uri = new Uri(string.Format(AppResources.CustomerUrl, string.Empty));


            string json = JsonConvert.SerializeObject(item);
            StringContent content = new StringContent(json, Encoding.UTF8, "application/json");

            HttpResponseMessage response = null;
            using (var client = new HttpClient())
            {
            if (isNewItem)
            {

                response = await client.PostAsync(uri, content);
            }


            if (response.IsSuccessStatusCode)
            {
                XamarinFormsEmail(json);
                Debug.WriteLine(@"\tCustomer successfully saved.");
            }

           }
           return response;

    }

Ying Kit Li 1 Reputation point

2021-11-17T14:40:21.207+00:00

The code suddenly return 400. Below is the json string that works before it returned 400 code:

{
"id": "0dacfd77-621c-41b1-a5fb-49007451e1c8",
"Name": "twin",
"Gender": "女士",
"Birthday": "1993-06-08T00:00:00",
"M_Status": "單身",
"Contact_No": "64589650",
"Email": "twin@Stuff .com",
"Belief": "無神論",
"Matched_Cus_id": null,
"Channel": "其他",
"IsComplete": false,
"Created_Time": "2021-11-16T13:12:12.836285Z",
"Last_Updated_Time": "2021-11-16T13:12:12.836676Z",
"_rid": "VixyAJ57caELAAAAAAAAAA==",
"_self": "dbs/VixyAA==/colls/VixyAJ57caE=/docs/VixyAJ57caELAAAAAAAAAA==/",
"_etag": "\"0700be5f-0000-1900-0000-6193ae2e0000\"",
"_attachments": "attachments/",
"_ts": 1637068334
}
Ying Kit Li 1 Reputation point

2021-11-17T14:45:21.777+00:00
var todoItem = new Models.Customer
{
Name = txtName.Text,
Gender = strGender,
Birthday = birthdayPicker.Date,
M_Status = strMStatus,
Contact_No = txtMobile.Text,
Email = txtEmailAddress.Text,
Belief = strBelief,
Channel = strChannel,
IsComplete = false,
Created_Time = DateTime.UtcNow,
Last_Updated_Time = DateTime.UtcNow
};

await SaveCustomerAsync(todoItem, true); await DisplayAlert("訊息", "成功登記", "確認"); await Shell.Current.GoToAsync($"//{nameof(AboutPage)}"); btnRegister.IsEnabled = true; lblProcessing.Text = ""; } }

Ying Kit Li 1

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using CosmosWebAPI.Models;
using CosmosWebAPI.Interfaces;
using Microsoft.Azure.Cosmos;
using System.Net;

namespace CosmosWebAPI.Controllers
{

[Route("api/[controller]")]
[ApiController]
public class LibraryController : ControllerBase
{
    private readonly ICosmosDbService _cosmoService;

    public LibraryController(ICosmosDbService cosmoService)
    {
        _cosmoService = cosmoService;
    }

    // GET: api/<LibraryController>

    [Route("/addCustomer")]
    [HttpPost]
    public async Task<ActionResult<Customer>> AddAsync([FromBody] Customer item)
    {
        if (ModelState.IsValid)
        {
            item.Id = Guid.NewGuid().ToString();
            await _cosmoService.AddAsync(item);
            return item;
        }

        return await Task.FromResult(StatusCode((int)HttpStatusCode.BadRequest, item));
    }
}

}

2 answers

AgaveJoe 26,191 Reputation points

2021-11-17T16:41:38.16+00:00

Still, you did not provide enough information. We can only guess what you're doing wrong. You've configured an attribute route as /addCustomer. We cannot see the value of AppResources.CustomerUrl. Does AppResources.CustomerUrl = "addCustomer"???

I don't understand why you have two different models... Did you start having problems after updating the model???? If so, then I assume the client and service model are out of sync.
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Ying Kit Li 1 Reputation point

2021-11-18T11:28:11.173+00:00

I fount that I delete the customer_id from the todoItem model while missing to delete that in customer model, that cause the out sync problem.
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