From 41e5742a9e06148998f8dc01a42193bb394ad548 Mon Sep 17 00:00:00 2001
From: Andy C <andy@oilshell.org>
Date: Fri, 24 Jan 2025 02:02:07 -0500
Subject: [PATCH] [demo] for HTTPS client over pipes

Can use socat, openssl s_client

But they are limited - you only get one request per process.  It would
be nice to have multiple requests per process.
---
 demo/https.sh | 106 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 106 insertions(+)
 create mode 100755 demo/https.sh

diff --git a/demo/https.sh b/demo/https.sh
new file mode 100755
index 0000000000..d365d18461
--- /dev/null
+++ b/demo/https.sh
@@ -0,0 +1,106 @@
+#!/usr/bin/env bash
+#
+# Testing how to send requests without curl
+#
+# Client features
+#
+# - SSL, for HTTPS
+# - Connection: Keep-Alive, for latency
+# - Timeouts, for robustness
+# - Client side redirects
+# - Sending arbitrary headers, for auth
+# - Encoding: URL encoding, multi-part/MIME
+#   - It would be nice to offload this encoding, similar to how CGI v2 offloads
+#     parsing
+# - Large streaming uploasd and downloads - this might need to be a separate
+#   request, e.g. to the wwup process
+# 
+# Probably don't care about:
+# - HTTP Cache - we might have a different mechanism - this is very complex and
+#   "best effort"
+#   - or there can be local cache of the "Oils SQL Waist"
+# - Cookies?  Not sure
+#
+# Not sure:
+# - Proxy support
+
+with-openssl() {
+  # Hm, it works for google.com, yahoo, HN, dreamhost.com/
+  #
+  # But Dreamhost shared hosting doesn't like it for some reason - get 400
+  # error
+  local hostname=${1:-www.google.com}
+
+  #openssl s_client -connect $hostname:443 <<EOF
+  openssl s_client -connect $hostname:443 -quiet <<EOF
+GET / HTTP/1.1
+Host: $hostname
+
+EOF
+}
+
+get-home() {
+  local hostname=${1:-oils.pub}
+  printf 'GET / HTTP/1.1\r\nHost: %s\r\n\r\n' "$hostname" 
+}
+
+# Hm this works, the \r\n does matter.
+crlf() {
+  local hostname=${1:-oils.pub}
+  get-home "$hostname" |
+    openssl s_client -connect $hostname:443 -quiet
+}
+
+with-curl() {
+  curl -v --include https://oils.pub/ |head
+}
+
+# TODO:
+# - HTTPS
+#   - socat
+#   - BoringSSL has 's_client' I guess
+# - for plain HTTP
+#   - nc
+#   - telnet
+
+deps() {
+  sudo apt-get install socat
+}
+
+with-socat() {
+  # This closes the pipe
+  local hostname=${1:-mb.oils.pub}
+  time get-home "$hostname" |
+    socat - openssl:$hostname:443
+}
+
+with-socat-http() {
+  # This closes the pipe
+  local hostname=${1:-mb.oils.pub}
+  time get-home "$hostname" |
+    socat - tcp:$hostname:80
+}
+
+
+with-socat-2() {
+  # This sorta works
+  local hostname=${1:-mb.oils.pub}
+
+  { get-home "mb.oils.pub";
+    get-home "mb.oils.pub";
+  } | socat - openssl:$hostname:443,fork
+}
+
+with-telnet() {
+  # Hm doesn't work
+  local hostname=${1:-mb.oils.pub}
+  time get-home "$hostname" | telnet $hostname 80
+}
+
+with-nc() {
+  # Hm doesn't work
+  local hostname=${1:-mb.oils.pub}
+  time get-home "$hostname" | nc $hostname 80
+}
+
+"$@"