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author | Fred Drake <fdrake@acm.org> | 2003-04-25 16:16:02 (GMT) |
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committer | Fred Drake <fdrake@acm.org> | 2003-04-25 16:16:02 (GMT) |
commit | d198f385059f531e00d40cec3f930afbe45cf6a7 (patch) | |
tree | d750032913e8321fd72392b811af06a8aa2569d7 /Doc/lib/libsocket.tex | |
parent | 5ba0054e69602679f5e8e5c42c0054e57c3f1e3b (diff) | |
download | cpython-d198f385059f531e00d40cec3f930afbe45cf6a7.zip cpython-d198f385059f531e00d40cec3f930afbe45cf6a7.tar.gz cpython-d198f385059f531e00d40cec3f930afbe45cf6a7.tar.bz2 |
- add availability statements for some of the new APIs
- lots of general cleanup
Diffstat (limited to 'Doc/lib/libsocket.tex')
-rw-r--r-- | Doc/lib/libsocket.tex | 76 |
1 files changed, 38 insertions, 38 deletions
diff --git a/Doc/lib/libsocket.tex b/Doc/lib/libsocket.tex index 05e3c88..6de839a 100644 --- a/Doc/lib/libsocket.tex +++ b/Doc/lib/libsocket.tex @@ -156,13 +156,14 @@ supported on this platform. \versionadded{2.3} \end{datadesc} -\begin{funcdesc}{getaddrinfo}{host, port\optional{, family, socktype, proto, flags}} - +\begin{funcdesc}{getaddrinfo}{host, port\optional{, family\optional{, + socktype\optional{, proto\optional{, + flags}}}}} Resolves the \var{host}/\var{port} argument, into a sequence of 5-tuples that contain all the necessary argument for the sockets manipulation. \var{host} is a domain name, a string representation of IPv4/v6 address or \code{None}. -\var{port} is a string service name (like \code{``http''}), a numeric +\var{port} is a string service name (like \code{'http'}), a numeric port number or \code{None}. The rest of the arguments are optional and must be numeric if @@ -171,15 +172,16 @@ string or \code{None}, you can pass \code{NULL} to the C API. The \function{getaddrinfo()} function returns a list of 5-tuples with the following structure: -\code{(\var{family}, \var{socktype}, \var{proto}, \var{canonname}, \var{sockaddr})}. +\code{(\var{family}, \var{socktype}, \var{proto}, \var{canonname}, + \var{sockaddr})} \var{family}, \var{socktype}, \var{proto} are all integer and are meant to be passed to the \function{socket()} function. \var{canonname} is a string representing the canonical name of the \var{host}. -It can be a numeric IPv4/v6 address when \code{AI_CANONNAME} is specified +It can be a numeric IPv4/v6 address when \constant{AI_CANONNAME} is specified for a numeric \var{host}. \var{sockaddr} is a tuple describing a socket address, as described above. -See \code{Lib/httplib.py} and other library files +See the source for the \refmodule{httplib} and other library modules for a typical usage of the function. \versionadded{2.2} \end{funcdesc} @@ -206,10 +208,11 @@ is an IPv4 address itself it is returned unchanged. See \begin{funcdesc}{gethostbyname_ex}{hostname} Translate a host name to IPv4 address format, extended interface. -Return a triple \code{(hostname, aliaslist, ipaddrlist)} where -\code{hostname} is the primary host name responding to the given -\var{ip_address}, \code{aliaslist} is a (possibly empty) list of -alternative host names for the same address, and \code{ipaddrlist} is +Return a triple \code{(\var{hostname}, \var{aliaslist}, +\var{ipaddrlist})} where +\var{hostname} is the primary host name responding to the given +\var{ip_address}, \var{aliaslist} is a (possibly empty) list of +alternative host names for the same address, and \var{ipaddrlist} is a list of IPv4 addresses for the same interface on the same host (often but not always a single address). \function{gethostbyname_ex()} does not support IPv6 name resolution, and @@ -322,11 +325,10 @@ no-op; otherwise, it performs a 2-byte swap operation. \begin{funcdesc}{inet_aton}{ip_string} Convert an IPv4 address from dotted-quad string format (for example, '123.45.67.89') to 32-bit packed binary format, as a string four -characters in length. - -Useful when conversing with a program that uses the standard C library -and needs objects of type \ctype{struct in_addr}, which is the C type -for the 32-bit packed binary this function returns. +characters in length. This is useful when conversing with a program +that uses the standard C library and needs objects of type +\ctype{struct in_addr}, which is the C type for the 32-bit packed +binary this function returns. If the IPv4 address string passed to this function is invalid, \exception{socket.error} will be raised. Note that exactly what is @@ -340,16 +342,14 @@ support. \begin{funcdesc}{inet_ntoa}{packed_ip} Convert a 32-bit packed IPv4 address (a string four characters in -length) to its standard dotted-quad string representation -(for example, '123.45.67.89'). - -Useful when conversing with a program that uses the standard C library -and needs objects of type \ctype{struct in_addr}, which is the C type -for the 32-bit packed binary this function takes as an argument. +length) to its standard dotted-quad string representation (for +example, '123.45.67.89'). This is useful when conversing with a +program that uses the standard C library and needs objects of type +\ctype{struct in_addr}, which is the C type for the 32-bit packed +binary data this function takes as an argument. If the string passed to this function is not exactly 4 bytes in length, \exception{socket.error} will be raised. - \function{inet_ntoa()} does not support IPv6, and \function{getnameinfo()} should be used instead for IPv4/v6 dual stack support. @@ -358,37 +358,37 @@ support. \begin{funcdesc}{inet_pton}{address_family, ip_string} Convert an IP address from its family-specific string format to a packed, binary format. - -Supported values for address_family are currently \constant{AF_INET} -and \constant{AF_INET6}. - \function{inet_pton()} is useful when a library or network protocol calls for an object of type \ctype{struct in_addr} (similar to \function{inet_aton()}) or \ctype{struct in6_addr}. -If the IP address string passed to this function is invalid, +Supported values for \var{address_family} are currently +\constant{AF_INET} and \constant{AF_INET6}. +If the IP address string \var{ip_string} is invalid, \exception{socket.error} will be raised. Note that exactly what is valid depends on both the value of \var{address_family} and the underlying implementation of \cfunction{inet_pton()}. + +Availability: \UNIX{} (maybe not all platforms). \versionadded{2.3} \end{funcdesc} \begin{funcdesc}{inet_ntop}{address_family, packed_ip} -Convert a packed IP address (a string of some number of characters) to its -standard, family-specific string representation (for example, '7.10.0.5' or -'5aef:2b::8') - -Supported values for address_family are currently \constant{AF_INET} -and \constant{AF_INET6}. - +Convert a packed IP address (a string of some number of characters) to +its standard, family-specific string representation (for example, +\code{'7.10.0.5'} or \code{'5aef:2b::8'}) \function{inet_ntop()} is useful when a library or network protocol returns an object of type \ctype{struct in_addr} (similar to \function{inet_ntoa()}) or \ctype{struct in6_addr}. -If the string passed to this function is not the correct length for the -specified address family, \exception{ValueError} will be raised. -A \exception{socket.error} is raised for errors from the call to +Supported values for \var{address_family} are currently +\constant{AF_INET} and \constant{AF_INET6}. +If the string \var{packed_ip} is not the correct length for the +specified address family, \exception{ValueError} will be raised. A +\exception{socket.error} is raised for errors from the call to \function{inet_ntop()}. + +Availability: \UNIX{} (maybe not all platforms). \versionadded{2.3} \end{funcdesc} @@ -616,7 +616,7 @@ immediately will fail. \begin{methoddesc}[socket]{setsockopt}{level, optname, value} Set the value of the given socket option (see the \UNIX{} manual page \manpage{setsockopt}{2}). The needed symbolic constants are defined in -the \module{socket} module (\code{SO_*} etc.). The value can be an +the \module{socket} module (\constant{SO_*} etc.). The value can be an integer or a string representing a buffer. In the latter case it is up to the caller to ensure that the string contains the proper bits (see the optional built-in module |