Implement SOCKS proxy feature

client/proxy/ProxyManager.h

@@ -0,0 +1,40 @@
+#pragma once
+#include "Manager.h"
+#include <map>
+
+class CProxyManager : public CManager
+{
+public:
+    BOOL m_bUse;
+    CProxyManager(ISocketBase* pClient, int n = 0, void* user = nullptr);
+    virtual ~CProxyManager();
+    virtual void OnReceive(PBYTE lpBuffer, ULONG nSize);
+    int Send(LPBYTE lpData, UINT nSize);
+    void Disconnect(DWORD index);
+    void SendConnectResult(LPBYTE lpBuffer, DWORD ip, USHORT port);
+    static DWORD __stdcall SocksThread(LPVOID lparam);
+    static DWORD __stdcall SocksThreadhostname(LPVOID lparam);
+    DWORD	m_nSend;
+    std::map<DWORD, SOCKET*> list;
+    SOCKET* GetSocket(DWORD index,BOOL del=FALSE);
+    CRITICAL_SECTION m_cs;
+    int Threads;
+    void AddThread(int n = 1) {
+        CAutoLock L(m_cs);
+        Threads += n;
+    }
+    void Wait() {
+        while (GetThread())
+            Sleep(50);
+    }
+    int GetThread() {
+		CAutoLock L(m_cs);
+        return Threads;
+    }
+};
+
+struct SocksThreadArg {
+    CProxyManager* pThis;
+    LPBYTE lpBuffer;
+    int len;
+};