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Last change
on this file since 108931 was 108206, checked in by vboxsync, 3 months ago |
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openssl-3.3.2: Exported all files to OSE and removed .scm-settings bugref:10757
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File size:
987 bytes
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| 1 | OpenSSL Simple Echo Client/Server
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| 2 | =================================
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| 3 |
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| 4 | This project implements a simple echo client/server.
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| 5 |
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| 6 | It is a console application, with command line parameters determining the mode
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| 7 | of operation (client or server). Start it with no parameters to see usage.
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| 8 |
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| 9 | The server code was adapted from the Simple TLS Server on the OpenSSL Wiki.
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| 10 | The server code was modified to perform the echo function, and client code
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| 11 | was added to open a connection with the server and to send keyboard input
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| 12 | to the server.
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| 13 |
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| 14 | The new client code illustrates that:
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| 15 |
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| 16 | - Connection to the SSL server starts as a standard TCP 'connect'.
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| 17 | - Once connected with TCP, the client 'upgrades' to SSL using
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| 18 | SSL_connect().
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| 19 | - When the SSL connection completes, data is sent and received using
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| 20 | SSL_write() and SSL_read().
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| 21 | - Pretty simple.
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| 22 |
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| 23 | The cert.pem and key.pem files included are self signed certificates with the
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| 24 | "Common Name" of 'localhost'.
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| 25 |
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| 26 | Best to create the 'pem' files using an actual hostname.
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