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-\section{\module{mactcp} ---
- The MacTCP interfaces}
-
-\declaremodule{builtin}{mactcp}
- \platform{Mac}
-\modulesynopsis{The MacTCP interfaces.}
-
-
-This module provides an interface to the Macintosh TCP/IP driver%
-\index{MacTCP} MacTCP. There is an accompanying module,
-\refmodule{macdnr}\refbimodindex{macdnr}, which provides an interface
-to the name-server (allowing you to translate hostnames to IP
-addresses), a module \module{MACTCPconst}\refstmodindex{MACTCPconst}
-which has symbolic names for constants constants used by MacTCP. Since
-the built-in module \module{socket}\refbimodindex{socket} is also
-available on the Macintosh it is usually easier to use sockets instead
-of the Macintosh-specific MacTCP API.
-
-A complete description of the MacTCP interface can be found in the
-Apple MacTCP API documentation.
-
-\begin{funcdesc}{MTU}{}
-Return the Maximum Transmit Unit (the packet size) of the network
-interface.\index{Maximum Transmit Unit}
-\end{funcdesc}
-
-\begin{funcdesc}{IPAddr}{}
-Return the 32-bit integer IP address of the network interface.
-\end{funcdesc}
-
-\begin{funcdesc}{NetMask}{}
-Return the 32-bit integer network mask of the interface.
-\end{funcdesc}
-
-\begin{funcdesc}{TCPCreate}{size}
-Create a TCP Stream object. \var{size} is the size of the receive
-buffer, \code{4096} is suggested by various sources.
-\end{funcdesc}
-
-\begin{funcdesc}{UDPCreate}{size, port}
-Create a UDP Stream object. \var{size} is the size of the receive
-buffer (and, hence, the size of the biggest datagram you can receive
-on this port). \var{port} is the UDP port number you want to receive
-datagrams on, a value of zero will make MacTCP select a free port.
-\end{funcdesc}
-
-
-\subsection{TCP Stream Objects}
-
-\begin{memberdesc}[TCP Stream]{asr}
-\index{asynchronous service routine}
-\index{service routine, asynchronous}
-When set to a value different than \code{None} this should refer to a
-function with two integer parameters:\ an event code and a detail. This
-function will be called upon network-generated events such as urgent
-data arrival. Macintosh documentation calls this the
-\dfn{asynchronous service routine}. In addition, it is called with
-eventcode \code{MACTCP.PassiveOpenDone} when a \method{PassiveOpen()}
-completes. This is a Python addition to the MacTCP semantics.
-It is safe to do further calls from \var{asr}.
-\end{memberdesc}
-
-
-\begin{methoddesc}[TCP Stream]{PassiveOpen}{port}
-Wait for an incoming connection on TCP port \var{port} (zero makes the
-system pick a free port). The call returns immediately, and you should
-use \method{wait()} to wait for completion. You should not issue any method
-calls other than \method{wait()}, \method{isdone()} or
-\method{GetSockName()} before the call completes.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{wait}{}
-Wait for \method{PassiveOpen()} to complete.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{isdone}{}
-Return \code{1} if a \method{PassiveOpen()} has completed.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{GetSockName}{}
-Return the TCP address of this side of a connection as a 2-tuple
-\code{(\var{host}, \var{port})}, both integers.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{ActiveOpen}{lport, host, rport}
-Open an outgoing connection to TCP address \code{(\var{host},
-\var{rport})}. Use
-local port \var{lport} (zero makes the system pick a free port). This
-call blocks until the connection has been established.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{Send}{buf, push, urgent}
-Send data \var{buf} over the connection. \var{push} and \var{urgent}
-are flags as specified by the TCP standard.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{Rcv}{timeout}
-Receive data. The call returns when \var{timeout} seconds have passed
-or when (according to the MacTCP documentation) ``a reasonable amount
-of data has been received''. The return value is a 3-tuple
-\code{(\var{data}, \var{urgent}, \var{mark})}. If urgent data is
-outstanding \code{Rcv} will always return that before looking at any
-normal data. The first call returning urgent data will have the
-\var{urgent} flag set, the last will have the \var{mark} flag set.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{Close}{}
-Tell MacTCP that no more data will be transmitted on this
-connection. The call returns when all data has been acknowledged by
-the receiving side.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{Abort}{}
-Forcibly close both sides of a connection, ignoring outstanding data.
-\end{methoddesc}
-
-\begin{methoddesc}[TCP Stream]{Status}{}
-Return a TCP status object for this stream giving the current status
-(see below).
-\end{methoddesc}
-
-
-\subsection{TCP Status Objects}
-
-This object has no methods, only some members holding information on
-the connection. A complete description of all fields in this objects
-can be found in the Apple documentation. The most interesting ones are:
-
-\begin{memberdesc}[TCP Status]{localHost}
-\memberline{localPort}
-\memberline{remoteHost}
-\memberline{remotePort}
-The integer IP-addresses and port numbers of both endpoints of the
-connection.
-\end{memberdesc}
-
-\begin{memberdesc}[TCP Status]{sendWindow}
-The current window size.
-\end{memberdesc}
-
-\begin{memberdesc}[TCP Status]{amtUnackedData}
-The number of bytes sent but not yet acknowledged. \code{sendWindow -
-amtUnackedData} is what you can pass to \method{Send()} without
-blocking.
-\end{memberdesc}
-
-\begin{memberdesc}[TCP Status]{amtUnreadData}
-The number of bytes received but not yet read (what you can
-\method{Recv()} without blocking).
-\end{memberdesc}
-
-
-
-\subsection{UDP Stream Objects}
-
-Note that, unlike the name suggests, there is nothing stream-like
-about UDP.
-
-
-\begin{memberdesc}[UDP Stream]{asr}
-\index{asynchronous service routine}
-\index{service routine, asynchronous}
-The asynchronous service routine to be called on events such as
-datagram arrival without outstanding \code{Read} call. The \var{asr}
-has a single argument, the event code.
-\end{memberdesc}
-
-\begin{memberdesc}[UDP Stream]{port}
-A read-only member giving the port number of this UDP Stream.
-\end{memberdesc}
-
-
-\begin{methoddesc}[UDP Stream]{Read}{timeout}
-Read a datagram, waiting at most \var{timeout} seconds (-1 is
-infinite). Return the data.
-\end{methoddesc}
-
-\begin{methoddesc}[UDP Stream]{Write}{host, port, buf}
-Send \var{buf} as a datagram to IP-address \var{host}, port
-\var{port}.
-\end{methoddesc}