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| -rw-r--r-- | docs/libcurl/curl_easy_setopt.3 | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3 index 434ccf973..94c1fc971 100644 --- a/docs/libcurl/curl_easy_setopt.3 +++ b/docs/libcurl/curl_easy_setopt.3 @@ -1070,11 +1070,22 @@ be a plain IP address, a host name, a network interface name (under Unix) or just a '-' symbol to let the library use your system's default IP address. Default FTP operations are passive, and thus won't use PORT. -Starting in 7.19.5, you can append \&":[start]-[end]\&" to the right of the -address, to tell libcurl what TCP port range to use. That means you specify a -port range, from a lower to a higher number. A single number works as well, -but do note that it increases the risk of failure since the port may not be -available. +The address can be followed by a ':' to specify a port, optionally followed by +a '-' to specify a port range. If the port specified is 0, the operating +system will pick a free port. If a range is provided and all ports in the +range are not available, libcurl will report CURLE_FTP_PORT_FAILED for the +handle. Invalid port/range settings are ignored. IPv6 addresses followed by +a port or portrange have to be in brackets. IPv6 addresses without port/range +specifier can be in brackets. (added in 7.19.5) + +Examples with specified ports: + +.nf + eth0:0 + 192.168.1.2:32000-33000 + curl.se:32123 + [::1]:1234-4567 +.fi You disable PORT again and go back to using the passive version by setting this option to NULL. |