Panda3D
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This is a special kind of ConnectionReader that waits for activity on a rendezvous port and accepts a TCP connection (instead of attempting to read a datagram from the rendezvous port). More...
#include "connectionListener.h"
Public Member Functions | |
ConnectionListener (ConnectionManager *manager, int num_threads, const string &thread_name=string()) | |
bool | add_connection (Connection *connection) |
Adds a new socket to the list of sockets the ConnectionReader will monitor. | |
ConnectionManager * | get_manager () const |
Returns a pointer to the ConnectionManager object that serves this ConnectionReader. | |
int | get_num_threads () const |
Returns the number of threads the ConnectionReader has been created with. | |
bool | get_raw_mode () const |
Returns the current setting of the raw mode flag. | |
int | get_tcp_header_size () const |
Returns the current setting of TCP header size. | |
bool | is_connection_ok (Connection *connection) |
Returns true if the indicated connection has been added to the ConnectionReader and is being monitored properly, false if it is not known, or if there was some error condition detected on the connection. | |
bool | is_polling () const |
Returns true if the reader is a polling reader, i.e. | |
void | poll () |
Explicitly polls the available sockets to see if any of them have any noise. | |
bool | remove_connection (Connection *connection) |
Removes a socket from the list of sockets being monitored. | |
void | set_raw_mode (bool mode) |
Sets the ConnectionReader into raw mode (or turns off raw mode). | |
void | set_tcp_header_size (int tcp_header_size) |
Sets the header size of TCP packets. | |
void | shutdown () |
Terminates all threads cleanly. | |
Protected Types | |
typedef pvector< SocketInfo * > | Sockets |
Protected Member Functions | |
void | clear_manager () |
This should normally only be called when the associated ConnectionManager destructs. | |
virtual void | connection_opened (const PT(Connection)&rendezvous, const NetAddress &address, const PT(Connection)&new_connection)=0 |
void | finish_socket (SocketInfo *sinfo) |
To be called when a socket has been fully read and is ready for polling for additional data. | |
virtual void | flush_read_connection (Connection *connection) |
Attempts to read all the possible data from the indicated connection, which has just delivered a write error (and has therefore already been closed). | |
virtual bool | process_incoming_data (SocketInfo *sinfo) |
This is the function that is called when activity is detected on a rendezvous port. | |
virtual bool | process_incoming_tcp_data (SocketInfo *sinfo) |
virtual bool | process_incoming_udp_data (SocketInfo *sinfo) |
virtual bool | process_raw_incoming_tcp_data (SocketInfo *sinfo) |
virtual bool | process_raw_incoming_udp_data (SocketInfo *sinfo) |
virtual void | receive_datagram (const NetDatagram &datagram) |
This function must be declared because it is pure virtual in the base class, but it isn't used in this class and doesn't do anything. | |
Protected Attributes | |
ConnectionManager * | _manager |
Sockets | _removed_sockets |
Sockets | _sockets |
LightMutex | _sockets_mutex |
This is a special kind of ConnectionReader that waits for activity on a rendezvous port and accepts a TCP connection (instead of attempting to read a datagram from the rendezvous port).
It is itself an abstract class, as it doesn't define what to do with the established connection. See QueuedConnectionListener.
Definition at line 35 of file connectionListener.h.
bool ConnectionReader::add_connection | ( | Connection * | connection | ) | [inherited] |
Adds a new socket to the list of sockets the ConnectionReader will monitor.
A datagram that comes in on any of the monitored sockets will be reported. In the case of a ConnectionListener, this adds a new rendezvous socket; any activity on any of the monitored sockets will cause a connection to be accepted.
The return value is true if the connection was added, false if it was already there.
add_connection() is thread-safe, and may be called at will by any thread.
Definition at line 196 of file connectionReader.cxx.
Referenced by PStatServer::listen(), MayaToEggServer::poll(), and PStatReader::set_tcp_connection().
void ConnectionReader::clear_manager | ( | ) | [protected, inherited] |
This should normally only be called when the associated ConnectionManager destructs.
It resets the ConnectionManager pointer to NULL so we don't have a floating pointer. This makes the ConnectionReader invalid; presumably it also will be destructed momentarily.
Definition at line 471 of file connectionReader.cxx.
void ConnectionReader::finish_socket | ( | SocketInfo * | sinfo | ) | [protected, inherited] |
To be called when a socket has been fully read and is ready for polling for additional data.
Definition at line 482 of file connectionReader.cxx.
Referenced by process_incoming_data().
void ConnectionReader::flush_read_connection | ( | Connection * | connection | ) | [protected, virtual, inherited] |
Attempts to read all the possible data from the indicated connection, which has just delivered a write error (and has therefore already been closed).
If the connection is not monitered by this reader, does nothing.
Definition at line 431 of file connectionReader.cxx.
References Socket_fdset::clear(), ConnectionReader::process_incoming_data(), and ConnectionReader::remove_connection().
ConnectionManager * ConnectionReader::get_manager | ( | ) | const [inherited] |
Returns a pointer to the ConnectionManager object that serves this ConnectionReader.
Definition at line 330 of file connectionReader.cxx.
int ConnectionReader::get_num_threads | ( | ) | const [inherited] |
Returns the number of threads the ConnectionReader has been created with.
Definition at line 341 of file connectionReader.cxx.
bool ConnectionReader::get_raw_mode | ( | ) | const [inherited] |
Returns the current setting of the raw mode flag.
See set_raw_mode().
Definition at line 368 of file connectionReader.cxx.
int ConnectionReader::get_tcp_header_size | ( | ) | const [inherited] |
Returns the current setting of TCP header size.
Definition at line 393 of file connectionReader.cxx.
bool ConnectionReader::is_connection_ok | ( | Connection * | connection | ) | [inherited] |
Returns true if the indicated connection has been added to the ConnectionReader and is being monitored properly, false if it is not known, or if there was some error condition detected on the connection.
(If there was an error condition, normally the ConnectionManager would have been informed and closed the connection.)
Definition at line 258 of file connectionReader.cxx.
bool ConnectionReader::is_polling | ( | ) | const [inline, inherited] |
Returns true if the reader is a polling reader, i.e.
it has no threads.
Definition at line 23 of file connectionReader.I.
Referenced by DatagramGeneratorNet::get_datagram().
void ConnectionReader::poll | ( | ) | [inherited] |
Explicitly polls the available sockets to see if any of them have any noise.
This function does nothing unless this is a polling-type ConnectionReader, i.e. it was created with zero threads (and is_polling() will return true).
It is not necessary to call this explicitly for a QueuedConnectionReader.
Definition at line 292 of file connectionReader.cxx.
References TrueClock::get_global_ptr(), and ConnectionReader::process_incoming_data().
Referenced by QueuedConnectionReader::data_available(), DatagramGeneratorNet::get_datagram(), QueuedConnectionListener::new_connection_available(), PStatServer::poll(), and MayaToEggServer::poll().
bool ConnectionListener::process_incoming_data | ( | SocketInfo * | sinfo | ) | [protected, virtual] |
This is the function that is called when activity is detected on a rendezvous port.
In this case, it performs the accept().
Reimplemented from ConnectionReader.
Definition at line 63 of file connectionListener.cxx.
References ConnectionReader::finish_socket(), Thread::force_yield(), NetAddress::get_ip_string(), Socket_IP::GetLastError(), and ConnectionManager::new_connection().
void ConnectionListener::receive_datagram | ( | const NetDatagram & | datagram | ) | [protected, virtual] |
This function must be declared because it is pure virtual in the base class, but it isn't used in this class and doesn't do anything.
Implements ConnectionReader.
Definition at line 50 of file connectionListener.cxx.
bool ConnectionReader::remove_connection | ( | Connection * | connection | ) | [inherited] |
Removes a socket from the list of sockets being monitored.
Returns true if the socket was correctly removed, false if it was not on the list in the first place.
remove_connection() is thread-safe, and may be called at will by any thread.
Definition at line 227 of file connectionReader.cxx.
Referenced by ConnectionReader::flush_read_connection().
void ConnectionReader::set_raw_mode | ( | bool | mode | ) | [inherited] |
Sets the ConnectionReader into raw mode (or turns off raw mode).
In raw mode, datagram headers are not expected; instead, all the data available on the pipe is treated as a single datagram.
This is similar to set_tcp_header_size(0), except that it also turns off headers for UDP packets.
Definition at line 357 of file connectionReader.cxx.
void ConnectionReader::set_tcp_header_size | ( | int | tcp_header_size | ) | [inherited] |
Sets the header size of TCP packets.
At the present, legal values for this are 0, 2, or 4; this specifies the number of bytes to use encode the datagram length at the start of each TCP datagram. Sender and receiver must independently agree on this.
Definition at line 382 of file connectionReader.cxx.
void ConnectionReader::shutdown | ( | ) | [inherited] |
Terminates all threads cleanly.
Normally this is only called by the destructor, but it may be called explicitly before destruction.
Definition at line 405 of file connectionReader.cxx.