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§Configuring Protocols

By default, WS SSL will use the most secure version of the TLS protocol available in the JVM.

The full protocol list in JSSE is available in the Standard Algorithm Name Documentation.

§Defining the default protocol

If you want to define a different default protocol, you can set it specifically in the client:

# Passed into SSLContext.getInstance() = "TLSv1.2"

If you want to define the list of enabled protocols, you can do so explicitly:

# passed into sslContext.getDefaultParameters().setEnabledProtocols() = [

If you are on JDK 1.8, you can also set the jdk.tls.client.protocols system property to enable client protocols globally.

WS recognizes “SSLv3”, “SSLv2” and “SSLv2Hello” as weak protocols with a number of security issues, and will throw an exception if they are in the list. Virtually all servers support TLSv1, so there is no advantage in using these older protocols.


The debug options for configuring protocol are: = {
  ssl = true
  sslctx = true
  handshake = true
  verbose = true
  data = true

Next: Configuring Cipher Suites

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