From 62171c761c72f7bc515b20361d043bfd239f71c9 Mon Sep 17 00:00:00 2001
From: user <user@clank>
Date: Fri, 17 Jul 2026 01:31:38 +0200
Subject: net: wget - real HTTP over the link port via the gateway

Grow the link-port demo from echo to actual network access. The Game Boy
still only does SLIP framing + display; the host gateway does DNS/TCP/HTTP.

- c/netlib.h: SLIP framing factored out (header-only, per-program copy).
  necho.c now uses it too.
- c/wget.c: `wget URL` frames the URL, then prints the reply body. The
  gateway streams the body back as typed frames: 'D'<chunk> ... 'E'.
- tools/gateway.py: add --mode http (urlopen the frame as a URL, cap the
  body, chunk it) alongside --mode echo; --cmd runs any gbos command.

Verified: `wget example.com` streams back the full Example Domain HTML onto
the terminal; `wget sl0p.foo` fetches the real page. A Game Boy on the web,
over the link cable.
---
 src/programs.asm | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src')

diff --git a/src/programs.asm b/src/programs.asm
index a0bef96..fbe6067 100644
--- a/src/programs.asm
+++ b/src/programs.asm
@@ -112,6 +112,9 @@ ProgPtest:
 SECTION "prog_necho",  ROMX[$4000], BANK[25]
 ProgNecho:
     INCBIN "c/necho.bin"
+SECTION "prog_wget",   ROMX[$4000], BANK[26]
+ProgWget:
+    INCBIN "c/wget.bin"
 
 ; -----------------------------------------------------------------------------
 ; PROG_SH (bank 3) - the shell, now written in C (c/sh.c): parses >/</| and
@@ -202,6 +205,8 @@ ProgramTable::
     dw ProgPtest
     db LOW(BANK(ProgNecho)), HIGH(BANK(ProgNecho))
     dw ProgNecho
+    db LOW(BANK(ProgWget)), HIGH(BANK(ProgWget))
+    dw ProgWget
 
 ; -----------------------------------------------------------------------------
 ; NameTable (ROM0) - command name -> program id, searched by sys_lookup.
@@ -256,4 +261,6 @@ NameTable::
     db PROG_PTEST
     db "necho", 0
     db PROG_NECHO
+    db "wget", 0
+    db PROG_WGET
     db 0
-- 
cgit v1.3.1-sl0p