class OpenSSL::SSL::Context::Client

Defined in:



Instance methods inherited from class OpenSSL::SSL::Context

add_modes(mode : OpenSSL::SSL::Modes) add_modes, add_options(options : OpenSSL::SSL::Options) add_options, add_x509_verify_flags(flags : OpenSSL::X509VerifyFlags) add_x509_verify_flags, alpn_protocol=(protocol : String) alpn_protocol=, ca_certificates=(file_path : String) ca_certificates=, ca_certificates_path=(dir_path : String) ca_certificates_path=, certificate_chain=(file_path : String) certificate_chain=, ciphers=(ciphers : String) ciphers=, default_verify_param=(name : String) default_verify_param=, finalize finalize, modes modes, options options, private_key=(file_path : String) private_key=, remove_modes(mode : OpenSSL::SSL::Modes) remove_modes, remove_options(options : OpenSSL::SSL::Options) remove_options, set_default_verify_paths set_default_verify_paths, set_tmp_ecdh_key(curve = LibCrypto::NID_X9_62_prime256v1) set_tmp_ecdh_key, to_unsafe : LibSSL::SSLContext to_unsafe, verify_mode verify_mode, verify_mode=(mode : OpenSSL::SSL::VerifyMode) verify_mode=

Instance methods inherited from class Reference

==(other : self)
==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==
, dup dup, hash(hasher) hash, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference)
same?(other : Nil) same?
, to_s(io : IO) : Nil to_s

Constructor methods inherited from class Reference

new new

Instance methods inherited from class Object

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===
, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash
, in?(*values : Object) : Bool
in?(collection) : Bool in?
, inspect : String
inspect(io : IO) : Nil inspect
, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO)
to_json to_json
, to_pretty_json(io : IO, indent : String = " ")
to_pretty_json(indent : String = " ") to_pretty_json
, to_s : String
to_s(io : IO) : Nil to_s
, to_yaml(io : IO)
to_yaml to_yaml
, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

Class methods inherited from class Object

from_json(string_or_io, root : String)
from_json(string_or_io) from_json
, from_yaml(string_or_io : String | IO) from_yaml

Constructor Detail

def self.from_hash(params) : selfSource

Configures a client context from a hash-like interface.

require "openssl"

context = OpenSSL::SSL::Context::Client.from_hash({"key" => "private.key", "cert" => "certificate.crt", "ca" => "ca.pem"})


  • key (required): Path to private key file. See #private_key=.
  • cert (required): Path to the file containing the public certificate chain. See #certificate_chain=.
  • verify_mode: Either peer, force-peer, none or empty (default: peer). See verify_mode=.
  • ca: Path to a file containing the CA certificate chain or a directory containing all CA certificates. See #ca_certificates= and #ca_certificates_path=, respectively. Required if verify_mode is peer, force-peer or empty.

def self.insecure(method : LibSSL::SSLMethod = Context.default_method) : selfSource

Returns a new TLS client context with only the given method set.

For everything else this uses the defaults of your OpenSSL. Use this only if undoing the defaults that .new sets is too much hassle.

def self.new(method : LibSSL::SSLMethod = Context.default_method)Source

Generates a new TLS client context with sane defaults for a client connection.

Defaults to TLS_method or SSLv23_method (depending on OpenSSL version) which tells OpenSSL to negotiate the TLS or SSL protocol with the remote endpoint.

Don't change the method unless you must restrict a specific protocol to be used (eg: TLSv1.2) and nothing else. You should specify options to disable specific protocols, yet allow to negotiate from various other ones. For example the following snippet will enable the TLSv1, TLSv1.1 and TLSv1.2 protocols but disable the deprecated SSLv2 and SSLv3 protocols:

require "openssl"

context = OpenSSL::SSL::Context::Client.new
context.add_options(OpenSSL::SSL::Options::NO_SSL_V2 | OpenSSL::SSL::Options::NO_SSL_V3)

It uses CIPHERS_OLD compatibility level by default.

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Licensed under the Apache License, Version 2.0.