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/*
* @(#)TCPSocket.hpp 1.7 06/26/07
*/
#ifndef TCPSOCKET_HPP
#define TCPSOCKET_HPP
#include "../debug/DebugUtils.h"
#include "../util/PRTypesUtils.h"
#include "../containers/Properties.hpp"
#include "../error/ErrorCodes.h"
#include "../client/TransportProtocolHandler.hpp"
#include "../basictypes/Object.hpp"
#include "../basictypes/Monitor.hpp"
#include
#include
/**
* This class implements a TCP connection to a host.
*/
class TCPSocket : public Object {
public:
/** The Status type encodes whether the connection is connected or not. */
enum Status {CONNECTED, NOT_CONNECTED};
private:
/**
* The socket file descriptor that is used to access the connection
* to the broker.
*/
public:
PRFileDesc * hostSocket;
private:
/**
* The address entry for the host that is returned by PR_GetHostByName. It
* contains pointers into the hostEntryData field.
*/
PRHostEnt hostEntry;
/**
* hostEntryData contains data returned by PR_GetHostByName.
* hostEntry has pointers that point into this field.
*/
char hostEntryData[PR_NETDB_BUF_SIZE];
/**
* The address entry for the localhost that is returned by PR_GetHostByName. It
* contains pointers into the localEntryData field.
*/
PRHostEnt localEntry;
/**
* localEntryData contains data returned by PR_GetHostByName.
* localEntry has pointers that point into this field.
*/
char localEntryData[PR_NETDB_BUF_SIZE];
/** the address (including port number) of the host */
PRNetAddr hostAddr;
/** the address (including port number) of the local connection to the host */
PRNetAddr localAddr;
/**
* localPort is the host order port number of the local connection to the host
*/
PRUint16 localPort;
/**
* local IP address
*/
IPAddress localIP;
/* These are only used for debugging */
FILE * writtenBytesFile;
FILE * readBytesFile;
/**
* This method initializes all members of the class.
*/
void init();
iMQError cacheLocalAddr();
iMQError pollForEvents(PRPollDesc * const pd, const PRIntervalTime timeout);
iMQError setAcceptSocket(PRFileDesc * const acceptingSocket);
public:
/**
* Constructor.
*/
TCPSocket();
/**
* Used for debugging purposes.
*/
TCPSocket(const char * const debugFileBase);
/**
* Destructor.
*/
virtual ~TCPSocket();
/**
* This method closes the connection (if open) and deallocates all memory
* associated with this connection.
*/
virtual void reset();
/**
* This method connects to the host specified by hostName and hostPort.
*
* @param hostName the name of the host to conenct to
* @param hostPort the port of the host to connect to
* @param timeoutMicroSeconds the number of microseconds to wait to connect.
* A value of 0 implies do not wait, and a value of 0xFFFFFFFF implies
* wait forever.
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError connect(const char * hostName,
const PRUint16 hostPort, const PRBool useIPV6,
const PRUint32 timeoutMicroSeconds);
/**
* This method is called immediately before the call to PR_Connect. It
* is primarily used by SSLSocket to allow it to setup the SSL properties.
*
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError preConnect(const char * hostName);
/**
* This method does the connect
*
* @param addr A pointer to the address of the peer to which this socket
* is to be connected
* @param timeout The time limit for completion of the connect operation.
*/
virtual MQError doConnect(PRNetAddr *addr, PRIntervalTime timeout, const char * hostName);
/**
* This method is called immediately after the connection to the
* host completes. It is used primarily by SSLSocket to handle some
* SSL specific activities.
*
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError postConnect();
virtual iMQError setDefaultSockOpts();
/**
* This method reads numBytesToRead bytes from the connection and places the
* results in bytesRead.
*
* @param numBytesToRead is the number of bytes to read from the connection
* @param timeoutMicroSeconds the number of microseconds to wait for the read
* to complete. A value of 0 implies do not wait, and a value of
* 0xFFFFFFFF implies wait forever.
* @param bytesRead is the buffer where the bytes read from the input stream
* are placed.
* @param numBytesRead is the number of bytes that were actually read from
* the connection.
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError read(const PRInt32 numBytesToRead,
const PRUint32 timeoutMicroSeconds,
PRUint8 * const bytesRead,
PRInt32 * const numBytesRead);
/**
* This method writes numBytesToWrite bytes from the buffer bytesToWrite to
* the connection.
*
* @param numBytesToWrite is the number of bytes to write to the connection
* @param bytesToWrite is the buffer where the bytes are written from
* @param timeoutMicroSeconds the number of microseconds to wait for the write
* to complete. A value of 0 implies do not wait, and a value of
* 0xFFFFFFFF implies wait forever.
* @param numBytesWritten is the number of bytes that were actually written to
* the connection.
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError write(const PRInt32 numBytesToWrite,
const PRUint8 * const bytesToWrite,
const PRUint32 timeoutMicroSeconds,
PRInt32 * const numBytesWritten);
/**
* This method shuts down the connection to the host, but does not
* close the socket or file descriptor.
*
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError shutdown();
/**
* This method closes the connection to the host.
*
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError close();
/**
* This method returns the local port number of the connection to the host.
*
* @param port is where the local port number is placed
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError getLocalPort(PRUint16 * const port) const;
/**
* This method returns the local ip address of the connection to the host.
*
* @param ipAddr is where the local ipAddr is placed
* @return IMQ_SUCCESS if successful and an error otherwise.
*/
virtual iMQError getLocalIP(const IPAddress ** const ipAddr) const;
/**
* This method returns the status of the connection (connected or not
* connected).
*
* @return TCPSocket::CONNECTED if the socket is connected and
* TCPSocket::NOT_CONNECTED if the socket is not connected.
*/
virtual Status status() const;
/**
* This method returns whether the connection is closed.
*
* @return PR_TRUE iff the connection is closed
*/
virtual PRBool isClosed();
/**
* Binds -- used only for testing.
*/
virtual iMQError bind(const char * localName,
const PRUint16 localPort);
/**
* Listens -- used only for testing.
*/
virtual iMQError listen();
/**
* Accepts -- used only for testing.
*/
virtual iMQError accept(TCPSocket ** const acceptingTCPSocket,
const PRUint32 timeoutMicroSeconds);
//
// Avoid all implicit shallow copies. Without these, the compiler
// will automatically define implementations for us.
//
private:
//
// These are not supported and are not implemented
//
TCPSocket(const TCPSocket& tcpSocket);
TCPSocket& operator=(const TCPSocket& tcpSocket);
};
#endif // TCPSOCKET_HPP
