Added new exception type and tests: ConnectionReadTimeoutException

Neo4j.Driver/Neo4j.Driver.Tests.TestBackend/Exceptions/ExceptionManager.cs

@@ -45,6 +45,7 @@ internal static class ExceptionManager
 			{ typeof(ResultConsumedException),          "ResultConsumedError" },
 			{ typeof(TransactionNestingException),      "TransactionNestingException" },
 			{ typeof(TokenExpiredException),			"TokenExpiredError"  },
+			{ typeof(ConnectionReadTimeoutException),   "ConnectionReadTimeoutError"},
 
             { typeof(NotSupportedException),            "NotSupportedException" }
         };

Neo4j.Driver/Neo4j.Driver.Tests/Extensions/StreamExtensionTests.cs

@@ -33,7 +33,7 @@ public async Task ShouldReadAndThrowOnTimeout()
 
 			ex.Should().NotBeNull();
 			ex.Should()
-				.BeOfType<ServiceUnavailableException>()
+				.BeOfType<ConnectionReadTimeoutException>()
 				.Which.Message.Should()
 				.Be($"Socket/Stream timed out afer {timeout}ms, socket closed.");
 		}

Neo4j.Driver/Neo4j.Driver/Internal/Extensions/StreamExtensions.cs

@@ -86,7 +86,7 @@ public static async Task<int> ReadWithTimeoutAsync(this Stream stream, byte[] bu
 			if (cancellationDelayTask.IsCanceled || cancellationDelayTask.IsCompleted)
 			{
 				stream.Close();
-				throw new ServiceUnavailableException($"Socket/Stream timed out afer {timeoutMS}ms, socket closed.");
+				throw new ConnectionReadTimeoutException($"Socket/Stream timed out afer {timeoutMS}ms, socket closed.");
 			}
 
 			// Means that main task completed. We use Result directly.

Neo4j.Driver/Neo4j.Driver/Neo4jException.cs

@@ -263,11 +263,35 @@ public SessionExpiredException(string message, Exception innerException) : base(
         }
     }
 
-    /// <summary>
-    /// There was a bolt protocol violation of the contract between the driver and the server. 
-    /// When seen this error, contact driver developers.
-    /// </summary>
-    [DataContract]
+	/// <summary>
+	///  A <see cref="ConnectionReadTimeoutException"/> indicates that the driver timed out trying to read from the network socket.
+	/// </summary>
+	[DataContract]
+	public class ConnectionReadTimeoutException : Neo4jException
+	{
+		/// <summary>
+		/// Create a new <see cref="ConnectionReadTimeoutException"/> with an error message.
+		/// </summary>
+		/// <param name="message">The error message.</param>
+		public ConnectionReadTimeoutException(string message) : base(message)
+		{
+		}
+
+		/// <summary>
+		/// Create a new <see cref="ConnectionReadTimeoutException"/> with an error message and an exception.
+		/// </summary>
+		/// <param name="message">The error message.</param>
+		/// <param name="innerException">The inner exception.</param>
+		public ConnectionReadTimeoutException(string message, Exception innerException) : base(message, innerException)
+		{
+		}
+	}
+
+	/// <summary>
+	/// There was a bolt protocol violation of the contract between the driver and the server. 
+	/// When seen this error, contact driver developers.
+	/// </summary>
+	[DataContract]
     public class ProtocolException : Neo4jException
     {
         private const string ErrorCodeInvalid = "Neo.ClientError.Request.Invalid";