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C#

C# static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C# code

  • All rules 493
  • Vulnerability46
  • Bug88
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  • Code Smell335

  • Quick Fix 61
Filtered: 11 rules found
asp.net
    Impact
      Clean code attribute
        1. Actions that return a value should be annotated with ProducesResponseTypeAttribute containing the return type

           Code Smell
        2. ModelState.IsValid should be called in controller actions

           Code Smell
        3. REST API actions should be annotated with an HTTP verb attribute

           Code Smell
        4. Value type property used as input in a controller action should be nullable, required or annotated with the JsonRequiredAttribute to avoid under-posting.

           Code Smell
        5. You should pool HTTP connections with HttpClientFactory

           Code Smell
        6. API Controllers should derive from ControllerBase instead of Controller

           Code Smell
        7. Controllers should not have mixed responsibilities

           Code Smell
        8. A Route attribute should be added to the controller when a route template is specified at the action level

           Code Smell
        9. Use model binding instead of reading raw request data

           Code Smell
        10. ASP.NET controller actions should not have a route template starting with "/"

           Code Smell
        11. Backslash should be avoided in route templates

           Bug

        You should pool HTTP connections with HttpClientFactory

        intentionality - complete
        reliability
        Code Smell
        • asp.net

        In frequently used code paths, such as controller actions, you should avoid using the HttpClient directly and opt for one of the IHttpClientFactory-based mechanisms instead. This way, you avoid wasting resources and creating performance overhead.

        Why is this an issue?

        How can I fix it?

        More Info

        If a code path that creates and disposes of HttpClient objects is frequently used, then the following issues can occur:

        • Under heavy load, there’s the risk of running out of available sockets, leading to SocketException errors. This is because each HttpClient instance uses a separate network connection, and there’s a limit to the number of connections that can be opened simultaneously. Note that even after you dispose of an HttpClient its sockets are not immediately freed up.
        • Each HttpClient has its own set of resources (like headers, base address, timeout, etc.) that must be managed. Creating a new HttpClient for every request means these resources are not being reused, leading to resource waste.
        • You introduce a significant performance overhead when creating a new HttpClient for every HTTP request.
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