rdkls’s gists

rdkls / Nginx RTMP publish from FFMPeg - Tshark

Created December 13, 2013 04:00

1.2.3.4 = Nginx + RTMP, 9.10.11.12 = My client (publishing via ffmpeg)

	0.000000 9.10.11.12 -> 1.2.3.4 TCP 78 40420 > macromedia-fcs [SYN] Seq=0 Win=65535 Len=0 MSS=1460 WS=16 TSval=2718096021 TSecr=0 SACK_PERM=1
	0.000053 1.2.3.4 -> 9.10.11.12 TCP 74 macromedia-fcs > 40420 [SYN, ACK] Seq=0 Ack=1 Win=14480 Len=0 MSS=1460 SACK_PERM=1 TSval=171744276 TSecr=2718096021 WS=32
	0.163405 9.10.11.12 -> 1.2.3.4 TCP 66 40420 > macromedia-fcs [ACK] Seq=1 Ack=1 Win=131760 Len=0 TSval=2718096183 TSecr=171744276
	0.163943 9.10.11.12 -> 1.2.3.4 TCP 1514 40420 > macromedia-fcs [ACK] Seq=1 Ack=1 Win=131760 Len=1448 TSval=2718096183 TSecr=171744276
	0.163962 1.2.3.4 -> 9.10.11.12 TCP 66 macromedia-fcs > 40420 [ACK] Seq=1 Ack=1449 Win=17376 Len=0 TSval=171744317 TSecr=2718096183
	0.163969 9.10.11.12 -> 1.2.3.4 RTMP 155 Handshake C0+C1
	0.163976 1.2.3.4 -> 9.10.11.12 TCP 66 macromedia-fcs > 40420 [ACK] Seq=1 Ack=1538 Win=17376 Len=0 TSval=171744317 TSecr=2718096183
	0.164149 1.2.3.4 -> 9.10.11.12 TCP 1514 macromedia-fcs > 40420 [ACK] Seq=1 Ack=1538 Win=17376 Len=1448 TSval=171744317 TSecr=2

rdkls / Wowza RTMP publish from Envivio - Tshark

Created December 13, 2013 07:07

1.2.3.4 = Wowza, 5.6.7.8 = Envivio

	0.000000 5.6.7.8 -> 1.2.3.4 TCP 62 snmp-tcp-port > macromedia-fcs [SYN] Seq=0 Win=65535 Len=0 MSS=1387 SACK_PERM=1
	0.000028 1.2.3.4 -> 5.6.7.8 TCP 62 macromedia-fcs > snmp-tcp-port [SYN, ACK] Seq=0 Ack=1 Win=14600 Len=0 MSS=1460 SACK_PERM=1
	0.001574 5.6.7.8 -> 1.2.3.4 TCP 60 snmp-tcp-port > macromedia-fcs [ACK] Seq=1 Ack=1 Win=65535 Len=0
	0.002216 5.6.7.8 -> 1.2.3.4 RTMP 1591 Handshake C0+C1
	0.002231 1.2.3.4 -> 5.6.7.8 TCP 54 macromedia-fcs > snmp-tcp-port [ACK] Seq=1 Ack=1538 Win=16644 Len=0
	0.004416 1.2.3.4 -> 5.6.7.8 TCP 2828 macromedia-fcs > snmp-tcp-port [ACK] Seq=1 Ack=1538 Win=16644 Len=2774
	0.004430 1.2.3.4 -> 5.6.7.8 RTMP 353 Handshake S0+S1+S2
	0.006482 5.6.7.8 -> 1.2.3.4 TCP 60 snmp-tcp-port > macromedia-fcs [ACK] Seq=1538 Ack=2775 Win=65535 Len=0
	0.007128 5.6.7.8 -> 1.2.3.4 RTMP 1590 Handshake C2
	0.007141 1.2.3.4 -> 5.6.7.8 TCP 54 macromedia-fcs > snmp-tcp-port [ACK] Seq=3074 Ack=3074 Win=19418 Len=0

rdkls / gist:8514848

Created January 20, 2014 04:26

	key_as_hex=$(cat ../static.key \| hexdump -e '16/1 "%02x"')
	for i in {0..5}; do
	fn_in=../../martha/fileSequence${i}.ts
	fn_flip=fileSequence.flip.${i}.ts
	fn_enc=fileSequence.enc.${i}.ts

	ffmpeg -y -i $fn_in -filter vflip $fn_flip

	init_vector=`printf '%032x' $i`
	openssl aes-128-cbc -e -in $fn_flip -out fileSequence.enc.$(($i)).ts -p -nosalt -iv $init_vector -K $key_as_hex

rdkls / elasticsearch.conf

Last active August 29, 2015 13:56 — forked from rbscott/elasticsearch.conf

	# ElasticSearch Service

	description "ElasticSearch"

	start on (net-device-up
	and local-filesystems
	and runlevel [2345])

	stop on runlevel [016]

rdkls / gist:9104936

Created February 20, 2014 01:05

Ansible tasks to set (aka register) a variable, based on stdout of a shell command

	- name: get gridfs host ip from name (required for nginx gridfs module)
	shell: 'ping -q -c 1 -t 1 {{ gridfs_host }} \| grep PING \| sed -e "s/).//" \| sed -e "s/.(//"'
	register: gridfs_ip_command
	when: gridfs_ip is not defined

	- name: set gridfs ip
	set_fact: gridfs_ip={{ gridfs_ip_command.stdout }}
	when: gridfs_ip is not defined

rdkls / backup

Created February 24, 2014 02:17

duplicity backup script

	#!/bin/bash
	export FTP_HOST=YOUR_HOST_HERE
	export FTP_USER=YOUR_USERNAME_HERE
	export FTP_PASSWORD=YOUR_PASSWORD_HERE
	export PASSPHRASE=YOUR_PASSPHRASE_HERE
	export SIGN_PASSPHRASE=YOUR_SIGN_PASSPHRASE_HERE

	usage='Usage: backups [list\|ftp\|retrieve\|ship\|restore]'

	duplicity=/usr/bin/duplicity

rdkls / fog creek job prob

Last active August 29, 2015 14:01

My python solution to the problem on the Fog Creek job app page http://www.fogcreek.com/Jobs/Dev/

	#!/usr/bin/python
	the_letters = 'acdegilmnoprstuw'
	target_hash = 910897038977002
	target_word_length = 9

	def possible_strings(given_hash, string_so_far=''):
	try:
	given_hash = float(given_hash)
	except ValueError:
	raise Exception('Hash must be a number')

rdkls / bonnie.log

Last active December 21, 2017 01:31

benchmarking storage types on aws ec2 ebs-optimized instance c3.xlarge

	# ephemeral = instance
	[root@ip-172-31-28-224 ec2-user]# bonnie++ -d /media/ephemeral0/ -n0 -s4G -r512M -f -b -u root
	Using uid:0, gid:0.
	Writing intelligently...

	done
	Rewriting...done
	Reading intelligently...done
	start 'em...done...done...done...done...done...
	Version 1.96 ------Sequential Output------ --Sequential Input- --Random-

rdkls / httpshark.sh

Last active February 10, 2018 05:58

http dump with tshark

tshark -V -R "tcp.port == 8080 && (http.request || http.response)" | awk "/Hypertext Transfer Protocol/,/Frame/ { print };/Transmission Control Protocol/{print};/Internet Protocol/{print}"

rdkls / generate-schema.cql

Last active March 8, 2018 00:59

neo4j create schema based on existing nodes

	// Generate an overview / schema of a graph database
	// Creates a node for each node label found in the graph,
	// relating these to each other for each type of relationship found in the graph
	// (apoc call required to create rel with dynamic type)
	MATCH (a)-[r]->(b)
	WITH head(labels(a)) AS l, head(labels(b)) AS l2, type(r) AS rel_type, count(*) as num_links
	merge (aMeta:Meta {label: l})
	merge (bMeta:Meta {label: l2})
	with aMeta, bMeta, rel_type, num_links
	call apoc.create.relationship(aMeta, rel_type, {num_links: num_links}, bMeta) yield rel

Nick rdkls