docs: mention the protocol:// support in proxy strings

diff --git a/docs/curl.1 b/docs/curl.1
index 2214312..638cc70 100644 (file)
--- a/docs/curl.1
+++ b/docs/curl.1
@@ -1542,22 +1542,27 @@ means the verification was successful. (Added in 7.19.0)
 .RE
 
 If this option is used several times, the last one will be used.
-.IP "-x/--proxy <proxyhost[:port]>"
-Use the specified HTTP proxy. If the port number is not specified, it is assumed
-at port 1080.
+.IP "-x/--proxy <[protocol://][user@password]proxyhost[:port]>"
+Use the specified HTTP proxy. If the port number is not specified, it is
+assumed at port 1080.
 
 This option overrides existing environment variables that set the proxy to
 use. If there's an environment variable setting a proxy, you can set proxy to
 \&"" to override it.
 
-\fBNote\fP that all operations that are performed over a HTTP proxy will
-transparently be converted to HTTP. It means that certain protocol specific
-operations might not be available. This is not the case if you can tunnel
-through the proxy, as done with the \fI-p/--proxytunnel\fP option.
+All operations that are performed over a HTTP proxy will transparently be
+converted to HTTP. It means that certain protocol specific operations might
+not be available. This is not the case if you can tunnel through the proxy, as
+done with the \fI-p/--proxytunnel\fP option.
+
+The proxy host can be specified the exact same way as the proxy environment
+variables, including the protocol prefix (http://) and the embedded user +
+password.
 
-Starting with 7.14.1, the proxy host can be specified the exact same way as
-the proxy environment variables, including the protocol prefix (http://) and
-the embedded user + password.
+From 7.21.7, the proxy string may be specified with a protocol:// prefix to
+specify alternative proxy protocols. Use socks4://, socks4a:// or socks5:// to
+request the specific SOCKS version to be used. No protocol specified, http://
+and all others will be treated as HTTP proxies.
 
 If this option is used several times, the last one will be used.
 .IP "-X/--request <command>"
@@ -1649,6 +1654,11 @@ 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 a asterisk
 \&'*' only, it matches all hosts.
+
+Since 7.21.7, the proxy string may be specified with a protocol:// prefix to
+specify alternative proxy protocols. Use socks4://, socks4a:// or socks5:// to
+request the specific SOCKS version to be used. No protocol specified, http://
+and all others will be treated as HTTP proxies.
 .SH EXIT CODES
 There are a bunch of different error codes and their corresponding error
 messages that may appear during bad conditions. At the time of this writing,

diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3
index 347c49a..4522181 100644 (file)
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@@ -632,6 +632,11 @@ use of a proxy, even if there is an environment variable set for it.
 Since 7.14.1, the proxy host string given in environment variables can be
 specified the exact same way as the proxy can be set with \fICURLOPT_PROXY\fP,
 include protocol prefix (http://) and embedded user + password.
+
+Since 7.21.7, the proxy string may be specified with a protocol:// prefix to
+specify alternative proxy protocols. Use socks4://, socks4a:// or socks5:// to
+request the specific SOCKS version to be used. No protocol specified, http://
+and all others will be treated as HTTP proxies.
 .IP CURLOPT_PROXYPORT
 Pass a long with this option to set the proxy port to connect to unless it is
 specified in the proxy string \fICURLOPT_PROXY\fP.