CP-47509: Expose RequestHeaders and ResponseHeaders in C# SDK.

Signed-off-by: Konstantina Chremmou <[email protected]>

ocaml/sdk-gen/csharp/autogen/src/JsonRpc.cs

@@ -181,6 +181,8 @@ public JsonRpcClient(string baseUrl)
         public bool PreAuthenticate { get; set; }
         public CookieContainer Cookies { get; set; }
         public RemoteCertificateValidationCallback ServerCertificateValidationCallback { get; set; }
+        public Dictionary<string, string> RequestHeaders { get; set; }
+        public Dictionary<string, string> ResponseHeaders { get; set; }
 
         public string Url { get; private set; }
 
@@ -285,14 +287,32 @@ protected virtual void PerformPostRequest(Stream postStream, Stream responseStre
             webRequest.CookieContainer = Cookies ?? webRequest.CookieContainer ?? new CookieContainer();
             webRequest.ServerCertificateValidationCallback = ServerCertificateValidationCallback ?? ServicePointManager.ServerCertificateValidationCallback;
 
+            if (RequestHeaders != null)
+            {
+                foreach (var header in RequestHeaders)
+                    webRequest.Headers.Add(header.Key, header.Value);
+            }
+
             using (var str = webRequest.GetRequestStream())
             {
                 postStream.CopyTo(str);
                 str.Flush();
             }
 
-            using (var webResponse = (HttpWebResponse)webRequest.GetResponse())
+            HttpWebResponse webResponse = null;
+            try
             {
+                webResponse = (HttpWebResponse)webRequest.GetResponse();
+
+                ResponseHeaders = new Dictionary<string, string>();
+
+                if (webResponse.Headers != null)
+                {
+                    var keys = webResponse.Headers.AllKeys;
+                    foreach (var key in keys)
+                        ResponseHeaders.Add(key, string.Join(",", webResponse.Headers.Get(key)));
+                }
+
                 if (webResponse.StatusCode != HttpStatusCode.OK)
                     throw new WebException(webResponse.StatusCode.ToString());
 
@@ -305,6 +325,11 @@ protected virtual void PerformPostRequest(Stream postStream, Stream responseStre
                     responseStream.Flush();
                 }
             }
+            finally
+            {
+                RequestHeaders = null;
+                webResponse?.Dispose();
+            }
         }
 
         private JsonSerializerSettings CreateSettings(IList<JsonConverter> converters)

ocaml/sdk-gen/csharp/autogen/src/Session.cs

@@ -279,6 +279,25 @@ public RemoteCertificateValidationCallback ServerCertificateValidationCallback
 
         public ICredentials Credentials => JsonRpcClient?.WebProxy?.Credentials;
 
+        /// <summary>
+        /// Optional headers in name-value pairs to be passed in the HttpWebRequests. The
+        /// default value is null. This property can be set by the implementing code before
+        /// each request. It is automatically reset to null once the request has been sent.
+        /// </summary>
+        public Dictionary<string, string> RequestHeaders
+        {
+            set => JsonRpcClient.RequestHeaders = value;
+            get => JsonRpcClient.RequestHeaders;
+        }
+
+        /// <summary>
+        /// Exposes the headers returned in the HttpWebResponses in name-value pairs.
+        /// This property is set once a response is received. The values are comma
+        /// separated strings of header values stored in a header.
+        /// It returns an empty dictionary if no headers are found.
+        /// </summary>
+        public Dictionary<string, string> ResponseHeaders => JsonRpcClient.ResponseHeaders;
+
         /// <summary>
         /// Always true before API version 1.6.
         /// Filled in after successful session_login_with_password for 1.6 or newer connections