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Re: On HTTP vs Gemini simplicity
@alexey raises some fair points about HTTP servers.
Though, I figured I woud try his one-liner HTTP server example.
$ nc -lk -p 1234 -e /bin/sh -c 'printf "HTTP/1.0 200 OK\r\n\r\n"; sed "/^.$/q"' nc: invalid option -- 'k' nc -h for help
Some information about my system.
$ cat /etc/os-release NAME=Slackware VERSION="15.0" ID=slackware VERSION_ID=15.0 PRETTY_NAME="Slackware 15.0 x86_64" ANSI_COLOR="0;34" CPE_NAME="cpe:/o:slackware:slackware_linux:15.0" HOME_URL="http://slackware.com/" SUPPORT_URL="http://www.linuxquestions.org/questions/slackware-14/" BUG_REPORT_URL="http://www.linuxquestions.org/questions/slackware-14/" VERSION_CODENAME=stable
Here is the package info for the netcat installed on this version of Slackware.
$ head -n 16 /var/lib/pkgtools/packages/nc-1.10-x86_64-4 PACKAGE NAME: nc-1.10-x86_64-4 COMPRESSED PACKAGE SIZE: 56.0K UNCOMPRESSED PACKAGE SIZE: 170K PACKAGE LOCATION: /var/log/mount/treecache/slackware64/n/nc-1.10-x86_64-4.txz PACKAGE DESCRIPTION: nc: nc (Netcat network utility) nc: nc: Netcat, or "nc" as the actual program is named, is a simple utility nc: which reads and writes data across network connections, using TCP or nc: UDP protocol. It is designed to be a reliable "back-end" tool that nc: can be used directly or easily driven by other programs and scripts. nc: At the same time, it is a feature-rich network debugging and nc: exploration tool, since it can create almost any kind of connection nc: you would need and has several interesting built-in capabilities. nc: Netcat was written by *Hobbit* <hobbit@avian.org>, and is a product nc: of Avian Research.
As an additional test I tried on one of the macOS machines in our test lab.
$ nc -lk -p 1234 -e /bin/sh -c 'printf "HTTP/1.0 200 OK\r\n\r\n"; sed "/^.$/q"'
nc: invalid option -- e
usage: nc [-46AacCDdEFhklMnOortUuvz] [-K tc] [-b boundif] [-i interval] [-p source_port]
[--apple-recv-anyif] [--apple-awdl-unres]
[--apple-boundif ifbound]
[--apple-no-cellular] [--apple-no-expensive]
[--apple-no-flowadv] [--apple-tcp-timeout conntimo]
[--apple-tcp-keepalive keepidle] [--apple-tcp-keepintvl keepintvl]
[--apple-tcp-keepcnt keepcnt] [--apple-tclass tclass]
[--tcp-adp-rtimo num_probes] [--apple-initcoproc-allow]
[--apple-tcp-adp-wtimo num_probes]
[--setsockopt-later] [--apple-no-connectx]
[--apple-delegate-pid pid] [--apple-delegate-uuid uuid]
[--apple-kao] [--apple-ext-bk-idle]
[--apple-netsvctype svc] [---apple-nowakefromsleep]
[--apple-notify-ack] [--apple-sockev]
[--apple-tos tos] [--apple-tos-cmsg]
[-s source_ip_address] [-w timeout] [-X proxy_version]
[-x proxy_address[:port]] [hostname] [port[s]]
Some info on that machine.
$ uname -a Darwin megatron.viv.osl 19.6.0 Darwin Kernel Version 19.6.0: Mon Apr 12 20:57:45 PDT 2021; root:xnu-6153.141.28.1~1/RELEASE_X86_64 x86_64
🤷
@alexey what kind of fancy-ass version of netcat are you running?
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