Allow HTTP Connector to reconnect to different buffers - closes #31

lib/socket.cpp

@@ -53,13 +53,16 @@ void Socket::Connection::setBlocking(bool blocking){
 }
 
 /// Close connection. The internal socket is closed and then set to -1.
+/// If the connection is already closed, nothing happens.
 void Socket::Connection::close(){
+  if (connected()){
     #if DEBUG >= 6
     fprintf(stderr, "Socket closed.\n");
     #endif
     shutdown(sock, SHUT_RDWR);
     ::close(sock);
     sock = -1;
+  }
 }//Socket::Connection::close
 
 /// Returns internal socket number.
@@ -214,7 +217,7 @@ signed int Socket::Connection::ready(){
 /// The connection status is updated after every read/write attempt, when errors occur
 /// and when the socket is closed manually.
 /// \returns True if socket is connected, false otherwise.
-bool Socket::Connection::connected(){
+bool Socket::Connection::connected() const{
   return (sock >= 0);
 }
 
@@ -451,6 +454,24 @@ std::string Socket::Connection::getHost(){
   return remotehost;
 }
 
+/// Returns true if these sockets are the same socket.
+/// Does not check the internal stats - only the socket itself.
+bool Socket::Connection::operator== (const Connection &B) const{
+  return sock == B.sock;
+}
+
+/// Returns true if these sockets are not the same socket.
+/// Does not check the internal stats - only the socket itself.
+bool Socket::Connection::operator!= (const Connection &B) const{
+  return sock != B.sock;
+}
+
+/// Returns true if the socket is valid.
+/// Aliases for Socket::Connection::connected()
+Socket::Connection::operator bool() const{
+  return connected();
+}
+
 /// Create a new base Server. The socket is never connected, and a placeholder for later connections.
 Socket::Server::Server(){
   sock = -1;
@@ -661,13 +682,16 @@ Socket::Connection Socket::Server::accept(bool nonblock){
 }
 
 /// Close connection. The internal socket is closed and then set to -1.
+/// If the connection is already closed, nothing happens.
 void Socket::Server::close(){
+  if (connected()){
     #if DEBUG >= 6
     fprintf(stderr, "ServerSocket closed.\n");
     #endif
     shutdown(sock, SHUT_RDWR);
     ::close(sock);
     sock = -1;
+  }
 }//Socket::Server::close
 
 /// Returns the connected-state for this socket.
@@ -675,7 +699,7 @@ void Socket::Server::close(){
 /// The connection status is updated after every accept attempt, when errors occur
 /// and when the socket is closed manually.
 /// \returns True if socket is connected, false otherwise.
-bool Socket::Server::connected(){
+bool Socket::Server::connected() const{
   return (sock >= 0);
 }//Socket::Server::connected
 

lib/socket.h

@@ -37,7 +37,7 @@ namespace Socket{
       bool canRead(); ///< Calls poll() on the socket, checking if data is available.
       bool canWrite(); ///< Calls poll() on the socket, checking if data can be written.
       signed int ready(); ///< Returns the ready-state for this socket.
-      bool connected(); ///< Returns the connected-state for this socket.
+      bool connected() const; ///< Returns the connected-state for this socket.
       bool read(const void * buffer, int len); ///< Reads data from socket.
       bool read(const void * buffer, int width, int count); ///< Read call that is compatible with file access syntax.
       bool write(const void * buffer, int len); ///< Writes data to socket.
@@ -62,6 +62,10 @@ namespace Socket{
       friend class Server;
       bool Error; ///< Set to true if a socket error happened.
       bool Blocking; ///< Set to true if a socket is currently or wants to be blocking.
+      //overloaded operators
+      bool operator== (const Connection &B) const;
+      bool operator!= (const Connection &B) const;
+      operator bool() const;
   };
 
   /// This class is for easily setting up listening socket, either TCP or Unix.
@@ -75,7 +79,7 @@ namespace Socket{
       Server(int port, std::string hostname = "0.0.0.0", bool nonblock = false); ///< Create a new TCP Server.
       Server(std::string adres, bool nonblock = false); ///< Create a new Unix Server.
       Connection accept(bool nonblock = false); ///< Accept any waiting connections.
-      bool connected(); ///< Returns the connected-state for this socket.
+      bool connected() const; ///< Returns the connected-state for this socket.
       void close(); ///< Close connection.
       int getSocket(); ///< Returns internal socket number.
   };