C# HttpWebRequest "Request-Header" in JSON POST

Question

ich einen JSON-API in C# Methoden sind zu übersetzen, und ich stieß auf ein Problem, wo der JSON-RPC API (POST) sagt

Alle andere Methoden das Ergebnis von Authentifizierung erfordern (= sessionId) entweder pro pathparameter

;jsessionid=644AFBF2C1B592B68C6B04938BD26965

oder pro Cookie (Request)

JSESSIONID=644AFBF2C1B592B68C6B04938BD26965

Meine aktuelle WebRequest Methode:

private async static Task<string> SendJsonAndWait(string json, string url, string sessionId) { 
     string result; 

     HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url); 
     httpWebRequest.ContentType = "application/json"; 
     httpWebRequest.Method = "POST"; 

     using(StreamWriter streamWriter = new StreamWriter(await httpWebRequest.GetRequestStreamAsync())) { 
      await streamWriter.WriteAsync(json); 
      streamWriter.Flush(); 
      streamWriter.Close(); 
     } 

     HttpWebResponse httpResponse = (HttpWebResponse)await httpWebRequest.GetResponseAsync(); 
     Stream responseStream = httpResponse.GetResponseStream(); 
     if(responseStream == null) 
      throw new Exception("Response Stream was null!"); 

     using(StreamReader streamReader = new StreamReader(responseStream)) { 
      result = await streamReader.ReadToEndAsync(); 
     } 

     return result; 
    } 

Wie füge ich die JSESSIONID Parameter zu meinem WebRequest? WebRequests kenne ich nicht, bitte kurz erklären!

Vielen Dank!

Answer 1

Verwendung Cookies.

Ihr Fall würde so aussehen;

private async static Task<string> SendJsonAndWait(string json, string url, string sessionId) { 
    Uri uri = new Uri(url); 
    string result; 

    HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(url); 
    httpWebRequest.ContentType = "application/json"; 
    httpWebRequest.Method = "POST"; 

    //Add the JSESSIONID Cookie 
    if(httpWebRequest.CookieContainer == null) 
      httpWebRequest.CookieContainer = new CookieContainer(); 

    if(!string.IsNullOrWhiteSpace(sessionId)) 
      httpWebRequest.CookieContainer.Add(new Cookie("JSESSIONID", sessionId, "/", uri.Host)); 

    using(StreamWriter streamWriter = new StreamWriter(await httpWebRequest.GetRequestStreamAsync())) { 
     await streamWriter.WriteAsync(json); 
     streamWriter.Flush(); 
     streamWriter.Close(); 
    } 

    HttpWebResponse httpResponse = (HttpWebResponse)await httpWebRequest.GetResponseAsync(); 
    Stream responseStream = httpResponse.GetResponseStream(); 
    if(responseStream == null) 
     throw new Exception("Response Stream was null!"); 

    using(StreamReader streamReader = new StreamReader(responseStream)) { 
     result = await streamReader.ReadToEndAsync(); 
    } 

    return result; 
} 

Answer 2

Sie können das Token direkt an Ihre URL hinzufügen:

HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create($"{url}?jsessionid={sessionId}"); 

Oder in den Header:

HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create({url); 
httpWebRequest.Headers["JSESSIONID"] = sessionId;