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PiotrBzdrega 3472732cd2 signal.h included two times 6 månader sedan
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A-SSL-Docs.txt 801c638c50 Added Simple SSL Echo Client/Server to demos. 2 år sedan
Makefile 86db958835 demos: tidy up makefiles, fix warnings 1 år sedan
README.md 801c638c50 Added Simple SSL Echo Client/Server to demos. 2 år sedan
build.info 2000281dad Convert demos to primary build system 7 månader sedan
cert.pem 801c638c50 Added Simple SSL Echo Client/Server to demos. 2 år sedan
key.pem 801c638c50 Added Simple SSL Echo Client/Server to demos. 2 år sedan
main.c 3472732cd2 signal.h included two times 6 månader sedan

README.md

OpenSSL Simple Echo Client/Server

This project implements a simple echo client/server.

It is a console application, with command line parameters determining the mode of operation (client or server). Start it with no parameters to see usage.

The server code was adapted from the Simple TLS Server on the OpenSSL Wiki. The server code was modified to perform the echo function, and client code was added to open a connection with the server and to send keyboard input to the server.

The new client code illustrates that:

  • Connection to the SSL server starts as a standard TCP 'connect'.
  • Once connected with TCP, the client 'upgrades' to SSL using SSL_connect().
  • When the SSL connection completes, data is sent and received using SSL_write() and SSL_read().
  • Pretty simple.

The cert.pem and key.pem files included are self signed certificates with the "Common Name" of 'localhost'.

Best to create the 'pem' files using an actual hostname.