qualcosa tipo quelli già fatti presenti nel repo

Esempio di riferimento - GUI chat di gruppo con possibilità di creare conversazioni private:

https://digilander.libero.it/Java_example/

All'interno contiene link alle spiegazioni sulla realizzazione di client e server, oltre agli zip del codice sorgente di essi.

Altro esempio (solo chat di gruppo):

https://www.mrwebmaster.it/java/semplice-chat-java_7548.html

Soluzione parziale (l'errore ancora rimane):
https://stackoverflow.com/questions/36319901/the-serviceclass-object-does-not-implement-the-required-method-in-the-following

Tutto su WS-Policy, con sorgenti di esempio:

https://www.ibm.com/developerworks/library/j-jws18/index.html

Keytool con esempi

Le altre lezioni collegate a questa guida contengono altre info interessanti sui Web Services

https://www.html.it/pag/53085/keytool-e-openssl/

PasswordCallback UsernameToken

https://www.html.it/pag/55098/ws-security-e-usernametoken-classe-e-client/
https://sites.google.com/site/ddmwsst/ws-security-impl/ws-security-with-usernametoken

Signature & Encryption

Contiene anche esempi di ws-policy

https://www.ibm.com/developerworks/library/j-jws5/index.html

Dynamic Username declaration

http://axis.8716.n7.nabble.com/Dynamically-setting-the-username-password-with-Rampart-td36252.html
https://stackoverflow.com/questions/20671402/how-can-i-use-dynamic-user-credentials-with-axis2-and-rampart
http://blog.thilinamb.com/2009/12/how-to-build-rampart-config.html

https://stackoverrun.com/it/q/1592331

Multithreaded Chat Application

https://www.geeksforgeeks.org/multi-threaded-chat-application-set-2/?ref=rp

Lanterna

https://github.com/mabe02/lanterna

SSL/TLS

https://www.ibm.com/developerworks/java/library/j-jws4/index.html
https://tomcat.apache.org/tomcat-8.0-doc/ssl-howto.html
https://www.youtube.com/watch?v=kud2Xsz98is&ab_channel=GlobalSign
http://theitside.blogspot.com/2012/03/how-to-enable-https-with-axis2.html
http://axis.8716.n7.nabble.com/problem-in-generating-stub-on-https-td40438.html
https://docs.oracle.com/middleware/1213/wls/WSSOV/ws-security-transport.htm#WSSOV241
http://docs.oasis-open.org/ws-sx/security-policy/examples/ws-sp-usecases-examples.html#_Toc274723240

fix1: https://stackoverflow.com/questions/14947517/pkix-path-building-failed-sun-security-provider-certpath-suncertpathbuilderexce
fix2: https://stackoverflow.com/questions/6851461/why-does-ssl-handshake-give-could-not-generate-dh-keypair-exception

• open source
• compatibile con la macchina virtuale ubuntu 18
• possibilmente facile da configurare

• WS-Policy: capire quali policy poter applicare e come implementarle.
• WS Secure Conversation:
  cos'è e come funziona?
  è possibile applicarlo alla chat?
  come implementarlo?

Le alterantive sono:

• username soltanto
• username + chiavi publiche e X.509
• username + chiavi publiche e X.509 + chiave di sessione per la chat