62 lines
1.2 KiB
Groff
62 lines
1.2 KiB
Groff
.TH tcp-environ 5
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.SH NAME
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tcp-environ \- TCP-related environment variables
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.SH DESCRIPTION
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The following environment variables
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describe a TCP connection.
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They are set up by
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.BR tcp-env ,
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.BR tcpclient ,
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and
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.BR tcpserver .
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Note that
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.BR TCPLOCALHOST ,
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.BR TCPREMOTEHOST ,
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and
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.B TCPREMOTEINFO
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can contain arbitrary characters.
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.TP 5
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PROTO
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The string
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.BR TCP .
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.TP 5
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TCPLOCALHOST
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The domain name of the local host,
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with uppercase letters converted to lowercase.
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If there is no currently available domain name
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for the local IP address,
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.B TCPLOCALHOST
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is not set.
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.TP 5
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TCPLOCALIP
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The IP address of the local host, in dotted-decimal form.
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.TP 5
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TCPLOCALPORT
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The local TCP port number, in decimal.
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.TP 5
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TCPREMOTEHOST
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The domain name of the remote host,
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with uppercase letters converted to lowercase.
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If there is no currently available domain name
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for the remote IP address,
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.B TCPREMOTEHOST
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is not set.
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.TP 5
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TCPREMOTEINFO
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A connection-specific string, perhaps a username,
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supplied by the remote host
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via 931/1413/IDENT/TAP.
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If the remote host did not supply connection information,
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.B TCPREMOTEINFO
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is not set.
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.TP 5
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TCPREMOTEIP
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The IP address of the remote host.
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.TP 5
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TCPREMOTEPORT
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The remote TCP port number.
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.SH "SEE ALSO"
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tcpclient(1),
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tcpserver(1),
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tcp-env(1),
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tcp(4)
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