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| author | user <user@clank> | 2026-07-17 13:11:53 +0200 |
|---|---|---|
| committer | user <user@clank> | 2026-07-17 13:11:53 +0200 |
| commit | a565bcd942efeb617f5424ae5a881211a7bd0216 (patch) | |
| tree | 518915e70d097ed8f8fee99422bc7161f9c53fc1 /tools | |
| parent | net: TCP sockets in the kernel - a Game Boy fetches HTTP over real TCP (diff) | |
| download | gbos-a565bcd942efeb617f5424ae5a881211a7bd0216.tar.gz gbos-a565bcd942efeb617f5424ae5a881211a7bd0216.tar.xz gbos-a565bcd942efeb617f5424ae5a881211a7bd0216.zip | |
net: wget-by-hostname + shared DNS resolver (a Game Boy fetches example.com)
resolve.h: shared helper that turns a dotted-quad or a hostname into an IPv4
address (DNS A query over a UDP socket to 1.1.1.1). nslookup now uses it and
slims down; wget uses it so you can name a host directly.
wget HOST|IP now: resolve -> TCP connect -> "GET / HTTP/1.0" with the real
Host header -> stream the body to the LCD/console until EOF. One command does
DNS + TCP + HTTP, all on the kernel socket layer.
Verified over tunbridge's NAT against the real internet:
/# wget example.com
connecting 172.66.147.243
HTTP/1.1 200 OK
Server: cloudflare
<!doctype html><html lang="en"><head><title>Example Domain</title>...
</body></html>
[eof]
The full HTML page arrives across many TCP segments and is reassembled and
printed - real DNS, real TCP, real HTTP, fetched by a Game Boy by name.
(tunbridge.py already sets up + tears down the NAT, so the demo is a one-liner:
sudo python3 tools/tunbridge.py "wget example.com")
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions