// HttpClient is intended to be instantiated once per application, rather than per-use. See Remarks. static readonly HttpClient client = new HttpClient(); static async Task Main() { // Call asynchronous network methods in a try/catch block to handle exceptions. try {
HttpClient is intended to be instantiated once and reused throughout the life of an application. Instantiating an HttpClient class for every request will exhaust the number of sockets available under heavy loads.
Designed for extension while providing robust support for the base HTTP protocol, HttpClient may be of interest to anyone building HTTP-aware client applications such as web browsers, web service clients, or systems that leverage or extend the HTTP protocol for distributed communication.
Once built, an HttpClient is immutable, and can be used to send multiple requests. An HttpClient provides configuration information, and resource sharing, for all requests sent through it.
The easy way to make HTTP requests in .NET is to use the HttpClient to send those requests. And it's a great abstraction to work with, especially with the methods supporting JSON payloads and responses.
In this guide, you will learn everything you need to know about using HttpClient. From the basics of making requests to advanced topics such as handling timeouts, authentication, and dependency injection.
HttpClient is a cornerstone of modern .NET applications, enabling HTTP communication with RESTful APIs, microservices, and cloud resources. However, misuse can lead to performance bottlenecks, security vulnerabilities, and scalability issues.
In C#, working with HttpClient requires understanding how to create it correctly, implementing middleware, ensuring resilience, handling retries, using circuit-breaker, and optimizing request ...
