Stub of FLpxSockets is now in place

Source/Integration/LuprexSockets.cpp

@@ -0,0 +1,101 @@
+
+#include "LuprexSockets.hpp"
+
+#define UI UI_ST
+THIRD_PARTY_INCLUDES_START
+#include <openssl/ssl.h>
+#include <openssl/rsa.h>
+#include <openssl/x509.h>
+#include <openssl/evp.h>
+#include <openssl/err.h>
+#include <openssl/bio.h>
+#include <openssl/pem.h>
+#include <openssl/conf.h>
+THIRD_PARTY_INCLUDES_END
+#undef UI
+
+
+enum EChanState {
+    CHAN_INACTIVE,
+    CHAN_PLAINTEXT,
+    CHAN_SSL_CONNECTING,
+    CHAN_SSL_ACCEPTING,
+    CHAN_SSL_READWRITE,
+};
+
+// A communication socket.
+class FLpxChannel
+{
+    int ChannelID;
+    FSocket* Socket;
+    SSL* SSLState;
+    BIO* RecvBIO;
+    BIO* SendBIO;
+    
+    // If recent_error is set, that means that a recent IO operation generated
+    // an error.  As a special case, EOF on read is considered an error, we use
+    // the string "EOF" for this case.
+    std::string RecentError;
+
+    // OpenSSL has a rule: if you try to SSL_write and it returns
+    // SSL_ERROR_WANT_READ, then you have to retry the write with the same
+    // number of bytes.  In this event, we record how many bytes we
+    // attempted to write, which will enable us to retry.
+    int RetryWriteNBytes;
+
+    // True if the channel needs to be advanced.
+    bool NeedAdvance;
+
+    EChanState State;
+    uint32_t NBytes;
+    const char* Bytes;
+};
+
+// A port-listening socket.
+class FLpxListener
+{
+    int BoundPort;
+    FSocket* Socket;
+};
+
+class FLpxSocketsI : public FLpxSockets
+{
+public:
+    // We don't own the wrapper, we just have a pointer to it.
+    // We require a guarantee that it outlives us.
+    EngineWrapper* Luprex;
+
+	TArray<FLpxChannel> Channels;
+	TArray<FLpxListener> Listeners;
+
+
+    SSL_CTX* ServerCTX;
+    SSL_CTX* ClientSecureCTX;
+    SSL_CTX* ClientInsecureCTX;
+
+    FLpxSocketsI(EngineWrapper* w);
+    virtual ~FLpxSocketsI() override;
+
+    virtual void Update() override;
+};
+
+FLpxSocketsI::FLpxSocketsI(EngineWrapper *w)
+{
+    Luprex = w;
+    ServerCTX = nullptr;
+    ClientSecureCTX = nullptr;
+    ClientInsecureCTX = nullptr;
+}
+
+FLpxSocketsI::~FLpxSocketsI()
+{
+}
+
+void FLpxSocketsI::Update()
+{
+}
+
+FLpxSockets* FLpxSockets::Create(EngineWrapper* w)
+{
+	return new FLpxSocketsI(w);
+}