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Kirill Smelkov
cpython
Commits
b721ef1d
Commit
b721ef1d
authored
Mar 01, 1995
by
Jack Jansen
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Half the mactcp documentation (macdnr still to come)
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Doc/libmactcp.tex
0 → 100644
View file @
b721ef1d
\section
{
Built-in module
\sectcode
{
mactcp
}}
\bimodindex
{
mactcp
}
\renewcommand
{
\indexsubitem
}{
(in module mactcp)
}
This module provides an interface to the Macintosh TCP/IP driver
MacTCP. There is an accompanying module
\var
{
macdnr
}
which provides an
interface to the name-server (allowing you to translate hostnames to
ip-addresses), a module
\var
{
MACTCP
}
which has symbolic names for
constants constants used by MacTCP and a wrapper module
\var
{
socket
}
which mimics the unix socket interface (as far as possible).
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.
\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
}
\renewcommand
{
\indexsubitem
}{
(TCP stream method)
}
\begin{datadesc}
{
asr
}
When set to a value different than
\var
{
None
}
this should point 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. In addition, it is called with eventcode
\var
{
MACTCP.PassiveOpenDone
}
when a
\var
{
PassiveOpen
}
completes. This
is a python addition to the MacTCP semantics.
It is safe to do further calls from the asr.
\end{datadesc}
\begin{funcdesc}
{
PassiveOpen
}{
port
}
Wait for an incoming connection on TCP port
\var
{
port
}
(zero makes the
system pick a free port). The call returns immedeately, and you should
use
\var
{
wait
}
to wait for completion. You should not issue any method
calls other than
\var
{
wait
}
,
\var
{
isdone
}
or
\var
{
GetSockName
}
before the call
completes.
\end{funcdesc}
\begin{funcdesc}
{
wait
}{}
Wait for
\var
{
PassiveOpen
}
to complete.
\end{funcdesc}
\begin{funcdesc}
{
isdone
}{}
Return 1 if a
\var
{
PassiveOpen
}
is completed.
\end{funcdesc}
\begin{funcdesc}
{
GetSockName
}{}
Return the TCP address of this side of a connection as a 2-tuple
\code
{
(host, port)
}
, both integers.
\end{funcdesc}
\begin{funcdesc}
{
ActiveOpen
}{
lport
\,
host
\,
rport
}
Open an outgoing connection to TCP address
\code
{
(host, rport)
}
. Use
local port
\var
{
lport
}
(zero makes the system pick a free port). This
call blocks until the connection is established.
\end{funcdesc}
\begin{funcdesc}
{
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{funcdesc}
\begin{funcdesc}
{
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
{
(data, urgent, mark)
}
. If urgent data is outstanding
\var
{
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{funcdesc}
\begin{funcdesc}
{
Close
}{}
Tell MacTCP that no more data will be transmitted on this
connection. The call returnes when all data has been acknowledged by
the receiving side.
\end{funcdesc}
\begin{funcdesc}
{
Abort
}{}
Forcibly close both sides of a connection, ignoring outstanding data.
\end{funcdesc}
\begin{funcdesc}
{
Status
}{}
Return a TCP status object for this stream.
\end{funcdesc}
\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:
\renewcommand
{
\indexsubitem
}{
(TCP status method)
}
\begin{datadesc}
{
localHost
}
\dataline
{
localPort
}
\dataline
{
remoteHost
}
\dataline
{
remotePort
}
The integer IP-addresses and port numbers of both endpoints of the
connection.
\end{datadesc}
\begin{datadesc}
{
sendWindow
}
The current window size.
\end{datadesc}
\begin{datadesc}
{
amtUnackedData
}
The number of bytes sent but not yet acknowledged.
\code
{
sendWindow -
amtUnackedData
}
is what you can pass to
\code
{
Send
}
without blocking.
\end{datadesc}
\begin{datadesc}
{
amtUnreadData
}
The number of bytes received but not yet read (what you can
\var
{
Recv
}
without blocking).
\end{datadesc}
\subsection
{
UDP stream objects
}
Note that, unlike the name suggests, there is nothing stream-like
about UDP.
\renewcommand
{
\indexsubitem
}{
(UDP stream method)
}
\begin{datadesc}
{
asr
}
The asynchronous service routine to be called on events such as
datagram arrival without outstanding
\var
{
Read
}
call. The asr has a
single argument, the event code.
\end{datadesc}
\begin{datadesc}
{
port
}
A read-only member giving the port number of this UDP stream.
\end{datadesc}
\begin{funcdesc}
{
Read
}{
timeout
}
Read a datagram, waiting at most
\var
{
timeout
}
seconds (-1 is
indefinite). Returns the data.
\end{funcdesc}
\begin{funcdesc}
{
Write
}{
host
\,
port
\,
buf
}
Send
\var
{
buf
}
as a datagram to IP-address
\var
{
host
}
, port
\var
{
port
}
.
\end{funcdesc}
Doc/mac/libmactcp.tex
0 → 100644
View file @
b721ef1d
\section
{
Built-in module
\sectcode
{
mactcp
}}
\bimodindex
{
mactcp
}
\renewcommand
{
\indexsubitem
}{
(in module mactcp)
}
This module provides an interface to the Macintosh TCP/IP driver
MacTCP. There is an accompanying module
\var
{
macdnr
}
which provides an
interface to the name-server (allowing you to translate hostnames to
ip-addresses), a module
\var
{
MACTCP
}
which has symbolic names for
constants constants used by MacTCP and a wrapper module
\var
{
socket
}
which mimics the unix socket interface (as far as possible).
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.
\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
}
\renewcommand
{
\indexsubitem
}{
(TCP stream method)
}
\begin{datadesc}
{
asr
}
When set to a value different than
\var
{
None
}
this should point 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. In addition, it is called with eventcode
\var
{
MACTCP.PassiveOpenDone
}
when a
\var
{
PassiveOpen
}
completes. This
is a python addition to the MacTCP semantics.
It is safe to do further calls from the asr.
\end{datadesc}
\begin{funcdesc}
{
PassiveOpen
}{
port
}
Wait for an incoming connection on TCP port
\var
{
port
}
(zero makes the
system pick a free port). The call returns immedeately, and you should
use
\var
{
wait
}
to wait for completion. You should not issue any method
calls other than
\var
{
wait
}
,
\var
{
isdone
}
or
\var
{
GetSockName
}
before the call
completes.
\end{funcdesc}
\begin{funcdesc}
{
wait
}{}
Wait for
\var
{
PassiveOpen
}
to complete.
\end{funcdesc}
\begin{funcdesc}
{
isdone
}{}
Return 1 if a
\var
{
PassiveOpen
}
is completed.
\end{funcdesc}
\begin{funcdesc}
{
GetSockName
}{}
Return the TCP address of this side of a connection as a 2-tuple
\code
{
(host, port)
}
, both integers.
\end{funcdesc}
\begin{funcdesc}
{
ActiveOpen
}{
lport
\,
host
\,
rport
}
Open an outgoing connection to TCP address
\code
{
(host, rport)
}
. Use
local port
\var
{
lport
}
(zero makes the system pick a free port). This
call blocks until the connection is established.
\end{funcdesc}
\begin{funcdesc}
{
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{funcdesc}
\begin{funcdesc}
{
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
{
(data, urgent, mark)
}
. If urgent data is outstanding
\var
{
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{funcdesc}
\begin{funcdesc}
{
Close
}{}
Tell MacTCP that no more data will be transmitted on this
connection. The call returnes when all data has been acknowledged by
the receiving side.
\end{funcdesc}
\begin{funcdesc}
{
Abort
}{}
Forcibly close both sides of a connection, ignoring outstanding data.
\end{funcdesc}
\begin{funcdesc}
{
Status
}{}
Return a TCP status object for this stream.
\end{funcdesc}
\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:
\renewcommand
{
\indexsubitem
}{
(TCP status method)
}
\begin{datadesc}
{
localHost
}
\dataline
{
localPort
}
\dataline
{
remoteHost
}
\dataline
{
remotePort
}
The integer IP-addresses and port numbers of both endpoints of the
connection.
\end{datadesc}
\begin{datadesc}
{
sendWindow
}
The current window size.
\end{datadesc}
\begin{datadesc}
{
amtUnackedData
}
The number of bytes sent but not yet acknowledged.
\code
{
sendWindow -
amtUnackedData
}
is what you can pass to
\code
{
Send
}
without blocking.
\end{datadesc}
\begin{datadesc}
{
amtUnreadData
}
The number of bytes received but not yet read (what you can
\var
{
Recv
}
without blocking).
\end{datadesc}
\subsection
{
UDP stream objects
}
Note that, unlike the name suggests, there is nothing stream-like
about UDP.
\renewcommand
{
\indexsubitem
}{
(UDP stream method)
}
\begin{datadesc}
{
asr
}
The asynchronous service routine to be called on events such as
datagram arrival without outstanding
\var
{
Read
}
call. The asr has a
single argument, the event code.
\end{datadesc}
\begin{datadesc}
{
port
}
A read-only member giving the port number of this UDP stream.
\end{datadesc}
\begin{funcdesc}
{
Read
}{
timeout
}
Read a datagram, waiting at most
\var
{
timeout
}
seconds (-1 is
indefinite). Returns the data.
\end{funcdesc}
\begin{funcdesc}
{
Write
}{
host
\,
port
\,
buf
}
Send
\var
{
buf
}
as a datagram to IP-address
\var
{
host
}
, port
\var
{
port
}
.
\end{funcdesc}
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