bash build.sh
# one terminal
./server
# another terminal
./client- Linuxネットワークプログラミングバイブル, http://www.ncad.co.jp/~mtaneda/lnpb
- https://stackoverflow.com/questions/10841946/c-fread-binary-from-bin-file
- https://stackoverflow.com/questions/47185326/how-to-write-binary-data-received-with-recv-to-file
- https://neineigh.hatenablog.com/entry/2013/09/28/185053
- https://qiita.com/tajima_taso/items/2f0606db7764580cf295
- https://qiita.com/tajima_taso/items/fb5669ddca6e4d022c15
- https://tech.ckme.co.jp/cpp/cpp_readdir.shtml
- https://marycore.jp/prog/c-lang/concat-c-string/
- https://idiotdeveloper.com/file-transfer-using-tcp-socket-in-c/