Add [0] TCP Server & Client - Bash implementation - cchopin #53
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cchopin
commented
Sep 22, 2025
cchopin
commented
- Cross-platform TCP server using netcat
- Client with default server address handling
- OS detection for Linux, macOS, and Windows
- Comprehensive documentation and examples
- Update gitignore with macOS exclusions
- Cross-platform TCP server using netcat - Client with default server address handling - OS detection for Linux, macOS, and Windows - Comprehensive documentation and examples - Update gitignore with macOS exclusions
cchopin
changed the title
- Implements multi-client real-time chat using pure bash and socat - Features include message broadcasting, user management, and persistent logging - Architecture uses TCP sockets with FIFO-based inter-process communication - Includes server.sh, handle_client.sh, and client.sh components - Clean user interface with "You:" vs "username:" message formatting - Automatic cleanup on client disconnection - Comprehensive README with architecture diagrams and troubleshooting - Tested on macOS with support for 10+ concurrent users
kurogai
reviewed
Oct 20, 2025
| @@ -0,0 +1,61 @@ | |||
| Dim 28 sep 2025 11:52:12 CEST: client_4547: ewd | |||
Owner
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Is this expected? Didn't you missed to add an ".gitignore" for this entry?
| echo "CONFIRM:$line" | ||
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| # Save message | ||
| echo "$(date): $USERNAME: $line" >> messages.txt |
Owner
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Interesting for your approach to store the messages in disk using an txt file.
A really nice implementation (not for this project, but in the future) would be to add encryption before storing the messages to protect the data.
| # Broadcast to other clients | ||
| while IFS=':' read -r other_client_id other_username other_fifo; do | ||
| if [[ "$other_client_id" != "$CLIENT_ID" && -p "$other_fifo" ]]; then | ||
| echo "$USERNAME: $line" > "$other_fifo" 2>/dev/null || true |
Owner
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This would be a nice example of command injection trought the client's names, i'll try to build an virtual machine with this server to see how it works.
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