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diff --git a/xpa/man/mann/xpamethod.n b/xpa/man/mann/xpamethod.n new file mode 100644 index 0000000..faecd86 --- /dev/null +++ b/xpa/man/mann/xpamethod.n @@ -0,0 +1,200 @@ +.\" Automatically generated by Pod::Man 2.22 (Pod::Simple 3.13) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +\&\fBXPAMethod: \s-1XPA\s0 Communication Methods\fR +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +\&\s-1XPA\s0 supports both inet and unix (local) socket communication. +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +\&\s-1XPA\s0 uses sockets for communication between processes. It supports +three methods of socket communication: inet, localhost, and unix. In +general, the same method should be employed for all \s-1XPA\s0 processes in a +session and the global environment variable \s-1XPA_METHOD\s0 should be used +to set up the desired method. By default, the preferred method is +\&\*(L"inet\*(R", which is appropriate for most users. You can set up a +different method by typing something like: +.PP +.Vb 3 +\& setenv XPA_METHOD local # unix csh +\& XPA_METHOD=local; export XPA_METHOD # unix sh, bash, windows/cygwin +\& set XPA_METHOD=localhost # dos/windows +.Ve +.PP +The options for \s-1XPA_METHOD\s0 are: \fBinet\fR, \fBunix\fR (or +\&\fBlocal\fR), and \fBlocalhost\fR. On Unix machines, this +environment setup command can be placed in your shell init file +(.cshrc, .profile, .bashrc, etc.) On Windows platforms, it can be +placed in your \s-1AUTOEXEC\s0.BAT file (I think!). +.PP +By default, \fBinet\fR sockets are used by \s-1XPA\s0. These are the standard +Internet sockets that are used by programs such as Netscape, +ftp. etc. Inet sockets utilize the \s-1IP\s0 address of the given machine and +a (usually random) port number to communicate between processes on the +same machine or between different machines on the Internet. (Note that +\&\s-1XPA\s0 has an Access Control mechanism to +prevent unauthorized access of \s-1XPA\s0 access points by other computers on +the Net). For users connected to the Internet, this usually is the +appropriate communication method. For more information about setting +up \s-1XPA\s0 communication between machines, see +Communication Between Machines. +.PP +In you are using \s-1XPA\s0 on a machine without an Internet connection, then +inet sockets are not appropriate. In fact, an \s-1XPA\s0 process often will +hang for many seconds while waiting for a response from the Domain +Name Service (\s-1DNS\s0) when using inet sockets. Instead of inet sockets, +users on Unix platforms can also use \fBunix\fR sockets (also known +as local sockets). These sockets are based on the local file system +and do not make use of the \s-1DNS\s0. They generally are considered to be +faster than inet sockets, but they are not implemented under +Windows. Use local sockets as a first resort if you are on a Unix +machine that is not connected to the Internet. +.PP +Users not connected to the Internet also can use \fBlocalhost\fR +sockets. These are also inet-type sockets but the \s-1IP\s0 address used for +the local machine is the \fBlocalhost\fR address, 0x7F000001, instead +of the real \s-1IP\s0 of the machine. Depending on how sockets are set up for +a given platform, communication with the \s-1DNS\s0 usually is not required in +this case (though of course, \s-1XPA\s0 cannot interact with other machines). +The localhost method will generally work on both Unix and Windows +platforms, but whether the \s-1DNS\s0 is required or not is subject to +individual configurations. +.PP +A final warning/reminder: if your XPA-enabled server hangs at startup +time and your \s-1XPA_METHOD\s0 is \fBinet\fR, the problem probably is +related to an incorrect Internet configuration. This can be confirmed +by using the \fBunix\fR method or (usually) the \fBlocalhost\fR +method. You can use these alternate methods if other hosts do not need +access to the \s-1XPA\s0 server. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +See xpa(n) for a list of \s-1XPA\s0 help pages |