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CURL.SetOptionProxySSLVersion

Sets which version of SSL/TLS to attempt to use for proxy.

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
CURL 8.2 Yes Yes Yes Yes Yes
MBS( "CURL.SetOptionProxySSLVersion"; curl; Value )   More

Parameters

Parameter Description Example value
curl The CURL session handle. $curl
Value The option value.

Result

Returns OK or error.

Description

Sets which version of SSL/TLS to attempt to use for proxy.
The SSL and TLS versions have typically developed from the most insecure version to be more and more secure in this order through history: SSL v2, SSLv3, TLS v1.0, TLS v1.1, TLS v1.2 and the most recent TLS v1.3.

Use one of the available defines for this purpose. The available options are:

Default0The default acceptable version range. The minimum acceptable version is by default TLS v1.0 since 7.39.0 (unless the TLS library has a stricter rule).
TLSv11TLS v1.0 or later
SSLv22SSL v2 (but not SSLv3)
SSLv33SSL v3 (but not SSLv2)
TLSv1.04TLS v1.0 or later (Added in 7.34.0)
TLSv1.15TLS v1.1 or later (Added in 7.34.0)
TLSv1.26TLS v1.2 or later (Added in 7.34.0)
TLSv1.37TLS v1.3 or later (Added in 7.52.0)

See also kSSLVersion* constants.

The maximum TLS version can be set by using one of the CURL_SSLVERSION_MAX_ macros below. It is also possible to OR one of the CURL_SSLVERSION_ macros with one of the CURL_SSLVERSION_MAX_ macros.

Default65536The flag defines the maximum supported TLS version by libcurl, or the default value from the SSL library is used. libcurl will use a sensible default maximum, which was TLS v1.2 up to before 7.61.0 and is TLS v1.3 since then - assuming the TLS library support it. (Added in 7.54.0)
Max TLSv1.0262144The flag defines maximum supported TLS version as TLS v1.0. (Added in 7.54.0)
Max TLSv1.1327680The flag defines maximum supported TLS version as TLS v1.1. (Added in 7.54.0)
Max TLSv1.2393216The flag defines maximum supported TLS version as TLS v1.2. (Added in 7.54.0)
Max TLSv1.3458752The flag defines maximum supported TLS version as TLS v1.3. (Added in 7.54.0)

Please note that MBS Plugin does not yet support TLS v1.3 now, but may in future.

See also PROXY_SSLVERSION option in CURL manual.

See also

Created 15th April 2018, last changed 22nd June 2019


CURL.SetOptionProxySSLVerifyPeer   -   CURL.SetOptionProxyServiceName

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