Description
What I am trying to do
I'm trying to access the API in my project (NET Core 6 WebApi) to get data from the response for the project purpose. The API response that I will access is XML data which consists of some data such as title, description, creation date, and also photo data in it.
Here's how I access the API using IHttpClientFactory in mycontroller:
[Route("Get")]
[HttpGet]
public async Task<IActionResult> Get()
{
HttpResponseMessage response = await _httpClient.GetAsync('the_name_of_the_api_i_will_be_accessing');
if (response.IsSuccessStatusCode)
{
// Check if the response is multipart/mixed
var headers = response.Content.Headers;
if (headers.ContentType?.MediaType == "multipart/mixed")
{
// Get the boundary from the content type header
string boundary = headers.ContentType.Parameters.FirstOrDefault(p => p.Name == "boundary")?.Value ?? "";
if (string.IsNullOrWhiteSpace(boundary) || (boundary.Length > new FormOptions().MultipartBoundaryLengthLimit))
{
throw new InvalidDataException("Boundary is missing or too long.");
}
Stream contentStream = await response.Content.ReadAsStreamAsync();
// Create a new reader based on the boundary
var reader = new MultipartReader(boundary, contentStream);
// Start reading sections from the MultipartReader until there are no more
var section = await reader.ReadNextSectionAsync();
while (section != null)
{
// Check the content type of each section
var contentType = new ContentType(section.ContentType);
// Read and process the content of each section based on its content type
if (contentType.MediaType == "application/xml")
{
// This section contains XML data, you can parse and process it as needed
var xmlContent = await section.ReadAsStringAsync();
// Process the XML content
}
else if (contentType.MediaType == "image/jpeg")
{
// This section contains an image (binary data), so i can save it or process it as needed
using (var imageStream = File.Create("path/to/save/image.jpg"))
{
await section.Body.CopyToAsync(imageStream);
}
}
// Read the next section
section = await reader.ReadNextSectionAsync();
}
}
return Ok();
}
else
{
return StatusCode((int)response.StatusCode, "API request failed");
}
}However, when I try to read section from the MultipartReader in code:
var section = await reader.ReadNextSectionAsync();I got an Error like this
System.IO.InvalidDataException: Multipart body length limit 16384 exceeded.
Things i've tried:
I've tried several ways to overcome this, one of which is to increase the MultipartBodyLengthLimit in Program.cs
services.Configure<FormOptions>(options =>
{
options.MultipartBodyLengthLimit = 104857600; // Set to a higher value for the body
});and I still get the same error
Postman response
In postman, it will return XML data and provides information with content-type multipart/mixed.
Here is the response result in postman:
<?xml version="1.0" encoding="utf-8"?>
<EventNotificationAlert version="2.0" xmlns="http://www.isapi.org/ver20/XMLSchema">
<dateTime>2023-08-22T09:47:30.486+07:00</dateTime>
<eventState>active</eventState>
<eventDescription>ANPR</eventDescription>
...
</EventNotificationAlert>
-----------------------------7daf10c20d06
Content-Disposition: form-data; name="detectionPicture"; filename="detectionPicture.jpg"
Content-Type: image/jpeg
Content-Length: 548804
How to solve this problem?