我正在开发一个利用简单Socket连接的项目，使用Packet.cs对象作为“旅行模式”在客户端和服务器之间传递小变量。客户端和服务器是不同项目的一部分，但是相同的解决方案，Packet.cs也是一个单独的“共享项目”。
这是我的packet.cs文件：
using System;
using System.Net;
using System.IO;
using System.Runtime.Serialization.Formatters.Binary;
using System.Threading.Tasks;
using System.Collections.Generic;
namespace ConnectionData
{
[Serializable]
public class Packet
{
// these are all the different types of things we can send
public List<string> gData;
public string packetString;
public int packetInt;
public bool packetBool;
public PacketType packetType;
// senderID is going to be the unique GUID that we generated
public string senderID;
public Packet (PacketType type, string senderID)
{
gData = new List<String> ();
this.senderID = senderID;
this.packetType = type;
}
public Packet(byte[] packetBytes)
{
// deconstructs the bytes we received into packet form
BinaryFormatter bf = new BinaryFormatter ();
MemoryStream ms = new MemoryStream (packetBytes);
Packet p = (Packet)bf.Deserialize (ms);
ms.Close ();
// assigns all the values from the packet info we received in byte form
this.gData = p.gData;
this.packetInt = p.packetInt;
this.packetBool = p.packetBool;
this.senderID = p.senderID;
this.packetType = p.packetType;
}
// this converts the whole packet object into a byte array to send through the socket
public byte[] ToBytes()
{
BinaryFormatter bf = new BinaryFormatter ();
MemoryStream ms = new MemoryStream ();
bf.Serialize (ms, this);
byte[] bytes = ms.ToArray ();
ms.Close ();
return bytes;
}
// this function will return the active IP address of the system. if it
// cant find one, it returns default local address
public static string GetIP4Address()
{
// this lists all addresses shown in IPConfig
IPAddress[] ips = Dns.GetHostAddresses (Dns.GetHostName ());
foreach(IPAddress i in ips)
{
// if there's an IP4 address in the list, return it
if (i.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
{
return i.ToString ();
}
}
// else return local address
return "127.0.0.1";
}
// enum makes it so we can define different strings, makes the packetType really easy to work with
// allows us to define what kind of packet it is
public enum PacketType
{
Registration, CloseConnection, Command
}
}
}
这是我用来发送数据的。当我在服务器上创建要发送给客户的消息时，我只需致电Packet p = new Packet(Packet.PacketType.Command);和socket.Send(p.ToBytes());
接收数据包（在两个项目上）使用：
public void Data_IN (object cSocket)
{
Socket clientSocket = (Socket)cSocket;
byte[] buffer;
int readBytes;
while (Server.listening) {
// sets our buffer array to the max size we're able to receive
buffer = new byte[clientSocket.SendBufferSize];
// gets the amount of bytes we've received
readBytes = clientSocket.Receive (buffer);
// if we actually recieve something, then sort through it
if (readBytes > 0) {
// handle data
Packet packet = new Packet (buffer);
DataManager (packet); // handles the packet data
}
}
}
当我尝试在第一次连接时发送注册数据包时出现问题。我启动我的服务器项目并让它执行只是等待，一切正常。客户端能够连接，服务器发送在此创建的注册数据包：
Packet p = new Packet (Packet.PacketType.Registration, Server.guid);
p.packetString = HeartCore.commandKey; // commandKey is a static string variable
clientSocket.Send (p.ToBytes ());
服务器显示已成功发送，然后客户端抛出异常。好极了！客户端使用Data_IN处理收到的数据包，如上所示。在
if (readBytes > 0) {
// handle data
Packet packet = new Packet (buffer); // this is where it stops
DataManager (packet); // handles the packet data
}
和
public Packet(byte[] packetBytes)
{
// deconstructs the bytes we received into packet form
BinaryFormatter bf = new BinaryFormatter ();
MemoryStream ms = new MemoryStream (packetBytes);
Packet p = (Packet)bf.Deserialize (ms); //EXCEPTION OCCURS HERE
ms.Close ();
...
如果你还记得，数据包类有一个构造函数，它接受byte []缓冲区并将其转换为一个对象，然后将临时数据包对象的值复制到正在使用的实际对象。
抛出的异常是
System.Runtime.Serialization.SerializationException: Couldn't find assembly 'Heart' ---> System.Exception: Could not load file or assembly 'Heart' or one of its dependencies. The system cannot find the file specified.
at System.AppDomain.Load (System.String assemblyString, System.Security.Policy.Evidence assemblySecurity, Boolean refonly) [0x00000] in <filename unknown>:0
at System.AppDomain.Load (System.String assemblyString) [0x00000] in <filename unknown>:0
at at (wrapper remoting-invoke-with-check) System.AppDomain:Load (string)
at System.Reflection.Assembly.Load (System.String assemblyString) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetDeserializationType (Int64 assemblyId, System.String className, Boolean throwOnError) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetDeserializationType (Int64 assemblyId, System.String className, Boolean throwOnError) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetDeserializationType (Int64 assemblyId, System.String className) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadTypeMetadata (System.IO.BinaryReader reader, Boolean isRuntimeObject, Boolean hasTypeInfo) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadObjectInstance (System.IO.BinaryReader reader, Boolean isRuntimeObject, Boolean hasTypeInfo, System.Int64& objectId, System.Object& value, System.Runtime.Serialization.SerializationInfo& info) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadObject (BinaryElement element, System.IO.BinaryReader reader, System.Int64& objectId, System.Object& value, System.Runtime.Serialization.SerializationInfo& info) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadObject (BinaryElement element, System.IO.BinaryReader reader, System.Int64& objectId, System.Object& value, System.Runtime.Serialization.SerializationInfo& info) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadNextObject (BinaryElement element, System.IO.BinaryReader reader) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.ObjectReader.ReadObjectGraph (BinaryElement elem, System.IO.BinaryReader reader, Boolean readHeaders, System.Object& result, System.Runtime.Remoting.Messaging.Header[]& headers) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.NoCheckDeserialize (System.IO.Stream serializationStream, System.Runtime.Remoting.Messaging.HeaderHandler handler) [0x00000] in <filename unknown>:0
at System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize (System.IO.Stream serializationStream) [0x00000] in <filename unknown>:0
at ConnectionData.Packet..ctor (System.Byte[] packetBytes) [0x00016] in /home/austin/Programming/C#/Crystal-Home-Systems/ConnectionData/Packet.cs:63
at Shard.Client.Data_IN () [0x0002f] in /home/austin/Programming/C#/Crystal-Home-Systems/Shard/Client.cs:90
at System.Threading.Thread.StartInternal () [0x00000] in <filename unknown>:0
现在，我对C＃本身不熟悉，但我对Java有着相当丰富的经验，之前已经完成了这种类型的服务器客户端工作。我花了大约5个小时改变了一切，使用谷歌，甚至询问了几个编程朋友，我们一直无法弄清楚发生了什么。 Couldn't find assembly 'Heart'指的是我想到项目Heart，它是发送导致崩溃的数据包的服务器类。
有谁知道可能导致崩溃的原因是什么？我很生气，觉得我错过了一些非常明显的东西。我试着尽可能具体，如果我忘记提问或者你需要更多细节，请告诉我！
非常感谢你提前帮忙！
编辑：只是为了澄清，服务器和客户端能够毫无问题地连接，尝试解码服务器发送给客户端的注册数据包时会发生错误。此外，它使用单声道在Linux系统Kubuntu上运行。我不认为这会有所作为，但它可能
答案 0 :(得分：1)
通过使用bf.Serialize (ms, this)发送数据包，您的客户端需要包含typeof(this)的程序集，即Heart程序集。然后客户端需要该程序集对其进行反序列化。
不要序列化内部结构（Packet），序列化您移动到程序集中的Payload类，并与客户端共享。
但问题是这段代码：
// gets the amount of bytes we've received
readBytes = clientSocket.Receive (buffer);
// if we actually recieve something, then sort through it
if (readBytes > 0) {
// handle data
Packet packet = new Packet (buffer);
DataManager (packet); // handles the packet data
}
可以在少量呼叫中使用localhost，但在达到任何严重流量时都会失败，因为buffer可以包含半条消息或三条半消息。
您需要实施成帧协议来检测单独的消息。
但是当你这样做时，你似乎正在从头开始重新创建Protocol Buffers。使用existing libraries这样的内容。
答案 1 :(得分：0)
我找到了问题的答案。 Packet.cs文件位于共享项目中。据我所知，共享项目使用解决方案中所有其他项目的资源，这不是我想要做的。
我尝试了各种各样的事情，包括CodeCaster给出的惊人答案，但没有任何效果。
要解决异常，我将Packet.cs文件重新编译为共享库项目，而不是共享项目。这允许将Packet.cs文件作为.dll文件放入构建路径，使其不具有其他项目的资源。
完美构建并执行解决方案！我希望这有助于将来的某个人！