docs: clarify NO_PROXY env variable functionality

Reported-by: Kirill Marchuk
Fixes #2773
Closes #2911
This commit is contained in:
Daniel Stenberg 2018-08-24 09:30:47 +02:00
parent 20168b948a
commit a7ba60bb72
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3 changed files with 10 additions and 9 deletions

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@ -20,9 +20,10 @@ protocol that curl supports and as specified in a URL. FTP, FTPS, POP3, IMAP,
SMTP, LDAP etc.
.IP "ALL_PROXY [protocol://]<host>[:port]"
Sets the proxy server to use if no protocol-specific proxy is set.
.IP "NO_PROXY <comma-separated list of hosts>"
list of host names that shouldn't go through any proxy. If set to an asterisk
\&'*' only, it matches all hosts.
.IP "NO_PROXY <comma-separated list of hosts/domains>" list of host names that
shouldn't go through any proxy. If set to an asterisk \&'*' only, it matches
all hosts. Each name in this list is matched as either a domain name which
contains the hostname, or the hostname itself.
This environment variable disables use of the proxy even when specified with
the --proxy option. That is

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@ -52,7 +52,9 @@ brackets:
The application does not have to keep the string around after setting this
option.
.SH "Environment variables"
See \fICURLOPT_PROXY(3)\fP
If there's an environment variable called \fBno_proxy\fP (or \fBNO_PROXY\fP),
it will be used if the \fICURLOPT_NOPROXY(3)\fP option is not set. It works
exactly the same way.
.SH DEFAULT
NULL
.SH PROTOCOLS

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@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
.\" * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@ -79,10 +79,8 @@ libcurl respects the proxy environment variables named \fBhttp_proxy\fP,
proxy for that URL scheme. So for a "FTP://" URL, the \fBftp_proxy\fP is
considered. \fBall_proxy\fP is used if no protocol specific proxy was set.
If \fBno_proxy\fP (or \fBNO_PROXY\fP) is set, it can specify a list of host
names to not use a proxy for (even if one of the previous mention variables
are set). That is the exact equivalent of setting the \fICURLOPT_NOPROXY(3)\fP
option.
If \fBno_proxy\fP (or \fBNO_PROXY\fP) is set, it is the exact equivalent of
setting the \fICURLOPT_NOPROXY(3)\fP option.
The \fICURLOPT_PROXY(3)\fP and \fICURLOPT_NOPROXY(3)\fP options override
environment variables.