👀 Views: 0 💬 Answers: 1 📅 Created: 2025-08-20

azure-functions httpclient timeout C#

I'm stuck on something that should probably be simple. I'm learning this framework and Quick question that's been bugging me - I'm experiencing a timeout scenario with my Azure Function when attempting to call an external API using HttpClient. My Azure Function is set to a function timeout of 5 minutes, but the call to the external API sometimes takes longer than 30 seconds. I've already tried increasing the timeout on the HttpClient instance, but it seems like the Azure Function execution itself is timing out. Here’s the relevant part of my code: ```csharp public static async Task<IActionResult> Run(HttpRequest req, ILogger log) { using (var client = new HttpClient()) { client.Timeout = TimeSpan.FromMinutes(2); var response = await client.GetAsync("https://externalapi.com/data"); if (response.IsSuccessStatusCode) { var content = await response.Content.ReadAsStringAsync(); return new OkObjectResult(content); } else { return new BadRequestObjectResult("behavior fetching data"); } } } ``` I’ve also verified that the HttpClient is being reused correctly and not being instantiated multiple times. In my local environment, everything works fine, and I can reach the external API without issues. However, when deployed to Azure, the function fails with a `Timeout (30000 milliseconds) while waiting for the request to complete` behavior. Is there a way to handle long-running requests in Azure Functions more effectively, or should I consider a different approach such as using Azure Durable Functions for this scenario? Any insights would be greatly appreciated! I'm working on a web app that needs to handle this. Any ideas what could be causing this? This is for a desktop app running on Debian. I'm open to any suggestions. This is my first time working with C# stable. Has anyone dealt with something similar?