Fix TLS read/write dispatch on tls branch

TCPSocket inherits from both Socket and TLS, both declaring receiveData()
as unrelated sibling methods - only Socket::receiveData was virtual, so
TLS::receiveData (SSL_read) was never reached regardless of TLS config,
and even when reached its result was never forwarded to onDataReceived
(that call was commented out). Added an explicit TCPSocket::receiveData
override dispatching to TLS::receiveData or Socket::receiveData based on
tlsInfo, and completed TLS::receiveData to actually return/forward the
decrypted bytes.

Write path did not exist at all. Added Socket::sendData() as a new
virtual hook mirroring receiveData, routed Socket::writeSocket() through
it instead of a raw ::write(), added TLS::sendData() (SSL_write, same
error-handling style as the existing TLS methods), and TCPSocket::sendData()
dispatching the same way the read side does.

Also fixed: a queued write in writeSocket() was being popped off the fifo
as if sent even when shutDown was true and nothing was actually written;
removed a dead empty if(tlsInfo){} stub in onDataReceived, no longer
needed now dispatch happens one level up; replaced leftover debug
std::cout lines with proper Log() calls matching the rest of the file.

Verified via full local compile: all 20 .cpp files build clean, link
into libServerCore.a, and nm confirms the new/fixed symbols are correctly
defined in the right object files.

TLS.h

@@ -1,67 +1,68 @@
-#ifndef __TLS_h__
-#define __TLS_h__
-
-#include "ZString.h"
-#include "TLSInfo.h"
-#include <openssl/ssl.h>
-
-namespace core {
-   
-   ///
-   /// TLS
-   ///
-   /// This object provides the support methods to handle TLS on the server core and
-   /// session environment.
-   ///
-   
-   class TLS {
-      
-    public:
-
-      ///
-      ///
-      ///
-      
-      TLS();
-      
-      ///
-      /// Use this constructor when the SSL context needs to be created as when opening
-      /// a server TCPSocket.
-      ///
-      
-      TLS(TLSInfo *tlsInfo);
-
-      ///
-      /// Use this constructor on creation of a new TCPSocket that needs access to
-      /// the generating server's SSL context.
-      ///
-      
-      TLS(SSL_CTX *ctx);
-      
-      ///
-      /// The destructor for this object.
-      ///
-      
-      ~TLS();
-
-      void createContext(TLSInfo *tlsInfo);
-
-      SSL_CTX *ctx;   
-      
-    protected:
-      void receiveData(coreutils::ZString &buffer);
-      void registerSocket(int fd);
-      void acceptSocket();
-      
-    private:
-      char *sip_cacert = (char *)"../testkeys/certs/pbxca.crt";
-      char *sip_cert = (char *)"../testkeys/certs/pbxserver.crt";
-      char *sip_key = (char *)"../testkeys/certs/pbxserver.key";
-      bool initialized = false;
-      SSL *ssl;
-      
-   };
-   
-}
-
-#endif
+#ifndef __TLS_h__
+#define __TLS_h__
+
+#include "ZString.h"
+#include "TLSInfo.h"
+#include <openssl/ssl.h>
+
+namespace core {
+   
+   ///
+   /// TLS
+   ///
+   /// This object provides the support methods to handle TLS on the server core and
+   /// session environment.
+   ///
+   
+   class TLS {
+      
+    public:
+
+      ///
+      ///
+      ///
+      
+      TLS();
+      
+      ///
+      /// Use this constructor when the SSL context needs to be created as when opening
+      /// a server TCPSocket.
+      ///
+      
+      TLS(TLSInfo *tlsInfo);
+
+      ///
+      /// Use this constructor on creation of a new TCPSocket that needs access to
+      /// the generating server's SSL context.
+      ///
+      
+      TLS(SSL_CTX *ctx);
+      
+      ///
+      /// The destructor for this object.
+      ///
+      
+      ~TLS();
+
+      void createContext(TLSInfo *tlsInfo);
+
+      SSL_CTX *ctx;   
+      
+    protected:
+      int receiveData(coreutils::ZString &buffer);
+      int sendData(const char *data, int length);
+      void registerSocket(int fd);
+      void acceptSocket();
+      
+    private:
+      char *sip_cacert = (char *)"../testkeys/certs/pbxca.crt";
+      char *sip_cert = (char *)"../testkeys/certs/pbxserver.crt";
+      char *sip_key = (char *)"../testkeys/certs/pbxserver.key";
+      bool initialized = false;
+      SSL *ssl;
+      
+   };
+   
+}
+
+#endif