Make EasyNetQ exceptions really serializable

Fixes #705 (#953)

Author: sungam3r

Source/EasyNetQ.Tests/SerializationTests.cs

@@ -0,0 +1,20 @@
+using FluentAssertions;
+using Xunit;
+
+namespace EasyNetQ.Tests
+{
+    public class SerializationTests
+    {
+        [Fact]
+        public void Should_Deserialize_Exceptions()
+        {
+            var str1 = Newtonsoft.Json.JsonConvert.SerializeObject(new EasyNetQException("blablabla"));
+            var ex1 = Newtonsoft.Json.JsonConvert.DeserializeObject<EasyNetQException>(str1);
+            ex1.Message.Should().Be("blablabla");
+
+            var str2 = Newtonsoft.Json.JsonConvert.SerializeObject(new EasyNetQResponderException("Ooops"));
+            var ex2 = Newtonsoft.Json.JsonConvert.DeserializeObject<EasyNetQResponderException>(str2);
+            ex2.Message.Should().Be("Ooops");
+        }
+    }
+}

Source/EasyNetQ/EasyNetQException.cs

@@ -1,20 +1,25 @@
 using System;
+using System.Runtime.Serialization;
 
 namespace EasyNetQ
 {
+    [Serializable]
     public class EasyNetQException : Exception
     {
-        public EasyNetQException() {}
-        public EasyNetQException(string message) : base(message) {}
-        public EasyNetQException(string format, params string[] args) : base(string.Format(format, args)) {}
-        public EasyNetQException(string message, Exception inner) : base(message, inner) {}
+        public EasyNetQException() { }
+        public EasyNetQException(string message) : base(message) { }
+        public EasyNetQException(string format, params object[] args) : base(string.Format(format, args)) { }
+        public EasyNetQException(string message, Exception inner) : base(message, inner) { }
+        protected EasyNetQException(SerializationInfo info, StreamingContext context) : base(info, context) { }
     }
 
+    [Serializable]
     public class EasyNetQResponderException : EasyNetQException
     {
         public EasyNetQResponderException() { }
         public EasyNetQResponderException(string message) : base(message) { }
-        public EasyNetQResponderException(string format, params string[] args) : base(format, args) { }
+        public EasyNetQResponderException(string format, params object[] args) : base(format, args) { }
         public EasyNetQResponderException(string message, Exception inner) : base(message, inner) { }
+        protected EasyNetQResponderException(SerializationInfo info, StreamingContext context) : base(info, context) { }
     }
-}
+}