Connection

from panda3d.core import Connection
class Connection

Bases: ReferenceCount

Represents a single TCP or UDP socket for input or output.

Inheritance diagram

Inheritance diagram of Connection

__init__(manager: ConnectionManager, socket: Socket_IP)

Creates a connection. Normally this constructor should not be used directly by user code; use one of the methods in ConnectionManager to make a new connection.

considerFlush()bool

Sends the most recently queued TCP datagram(s) if enough time has elapsed. This only has meaning if setCollectTcp() has been set to true.

flush()bool

Sends the most recently queued TCP datagram(s) now. This only has meaning if setCollectTcp() has been set to true.

getAddress()NetAddress

Returns the address bound to this connection, if it is a TCP connection.

getCollectTcp()bool

Returns the current setting of “collect-tcp” mode. See setCollectTcp().

getCollectTcpInterval()float

Returns the interval in time, in seconds, for which to hold TCP packets before sending all of the recently received packets at once. This only has meaning if “collect-tcp” mode is enabled; see setCollectTcp().

getManager()ConnectionManager

Returns a pointer to the ConnectionManager object that serves this connection.

getSocket()Socket_IP

Returns the internal Socket_IP that defines the connection.

setCollectTcp(collect_tcp: bool)None

Enables or disables “collect-tcp” mode. In this mode, individual TCP packets are not sent immediately, but rather they are collected together and accumulated to be sent periodically as one larger TCP packet. This cuts down on overhead from the TCP/IP protocol, especially if many small packets need to be sent on the same connection, but it introduces additional latency (since packets must be held before they can be sent).

See setCollectTcpInterval() to specify the interval of time for which to hold packets before sending them.

If you enable this mode, you may also need to periodically call considerFlush() to flush the queue if no packets have been sent recently.

setCollectTcpInterval(interval: float)None

Specifies the interval in time, in seconds, for which to hold TCP packets before sending all of the recently received packets at once. This only has meaning if “collect-tcp” mode is enabled; see setCollectTcp().

setIpTimeToLive(ttl: int)None

Sets IP time-to-live.

setIpTypeOfService(tos: int)None

Sets IP type-of-service and precedence.

setKeepAlive(flag: bool)None

Sets whether the connection is periodically tested to see if it is still alive.

setLinger(flag: bool, time: float)None

Sets the time to linger on close if data is present. If flag is false, when you close a socket with data available the system attempts to deliver the data to the peer (the default behavior). If flag is false but time is zero, the system discards any undelivered data when you close the socket. If flag is false but time is nonzero, the system waits up to time seconds to deliver the data.

setMaxSegment(size: int)None

Sets the maximum segment size.

setNoDelay(flag: bool)None

If flag is true, this disables the Nagle algorithm, and prevents delaying of send to coalesce packets.

setRecvBufferSize(size: int)None

Sets the size of the receive buffer, in bytes.

setReuseAddr(flag: bool)None

Sets whether local address reuse is allowed.

setSendBufferSize(size: int)None

Sets the size of the send buffer, in bytes.