secure-tcp-socket

Create secure connections without requirement of certificates and key stores. Optimized for Java 21.

Usage

• Client & Server - start SecSocketExample and have a look at the log
• Explore unitTest ExampleClientIT and connect to an existing server

Issues and Sonar

Issues: https://github.com/aeugster/secure-tcp-socket/issues

Sonar: https://sonarcloud.io/summary/overall?id=aeugster_secure-tcp-socket

Exceptions

• SecureSocketTechnicalException is thrown for unexpected errors
• SecureSocketApplicationException is kind of expected. Currently, IOExceptions are used instead

Misc

Trigger sonar manually (login required)

• Use start workflow buttons
• Don't change analysis method https://sonarcloud.io/project/analysis_method?id=aeugster_secure-tcp-socket

Formatting

• use intellij defaults (e.g. spaces instead of tab)

Motivation

The use of RestTemplate was not an option (since it relies on trusted certificates):

• For 'lets encrypt' the server must be public
• For private CA the JRE needs cert import
• Long polls would be needed for information-push to the client

Java SSLSocket was not an option (since it relies on trusted certificates):

• Application needs a truststore with imported server certificate

Notes and tricks

• Versioning follows java-defaults Major, Minor & Patch
• show COMMITS on gui: click on the clock below the green [Code] button or use https://github.com/aeugster/secure-tcp-socket/commits/main

Used code examples

What	URL
pom.xml	https://javabydeveloper.com/junit-5-maven-example/