client

Indexes, hosts and downloads files over LANs

Run in 'daemon' mode

• go build . && ./client -d

Run in 'CLI' mode

• go build . && ./client

Run all tests

• go test ./...

Test loopback interface

• Compile with go build .
• Start server ./client -d
• Run CLI command ./client add 1 2

Test Indexing a file

• go build . && ./client -d
• cat /usr/share/dict/words > /tmp/testFile.txt
• go build . && ./client share /tmp/testFile.txt

Test Listing files

• go build . && ./client -d
• go build . && ./client list

Test host discovery

• use scripts runRemoteClient and runRemoteDaemon in ../scripts

TODO:

-- IMMEDIATE CONCERNS --

• Make downloads happen in parallel. Fix the massive hack in serverStartDownload.go
• Make downloads start automatically when the daemon restarts
• Make downloads cancellable (using 'context'?)

-- General ugliness --

• downloading a file overwrites (without first deleting) the extant file at that path in ~/Downloads . This leads to some hella confusing behavior. Delete the file first!
• Universally replace []uint16 with []range wherever possible
• Have the sender maintain a set of 'unacked' messages to retransmit at the end
• Chunk size needs to be globally constant... 🤦‍♂️
• Use merkel trees to 'patch' the chunks if they don't match
• have the receiver close the connection instead of relying on a sender-side timeout

Local Dev notes:

• use fn + f5 to run the client with debugging enabled in daemon mode

Resources

• https://ops.tips/blog/udp-client-and-server-in-go/ for UDP OS-level goodies