nex6-capture.rb

#!/usr/bin/ruby
#
#  nex6-capture.rb - sample program for Sony NEX-6 (Smart Remocon App)
#
require "socket"
require 'json'
require "pp"
require "open-uri"

$host = "192.168.122.1"
$port = 8080

# enable preview
s = TCPSocket.open($host, $port)
s.print("POST /sony/camera HTTP/1.1\r\nContent-Length: 60\r\n\r\n{\"method\":\"startRecMode\",\"params\":[],\"id\":5,\"version\":\"1.0\"}")
s.flush
body = s.read.split(/\r\n\r\n/)[1]
p JSON.parse(body)
s.close

# waiting for starting preview...?
sleep 7

# take picture
s = TCPSocket.open($host, $port)
s.print("POST /sony/camera HTTP/1.1\r\nContent-Length: 63\r\n\r\n{\"method\":\"actTakePicture\",\"params\":[],\"id\":10,\"version\":\"1.0\"}")
s.flush
body = s.read.split(/\r\n\r\n/)[1]
doc = JSON.parse(body)
s.close

# {"id":10,"result":[["http://192.168.122.1:8080/postview/pict20130614_175010_0.JPG"]]}
result_url = doc["result"][0][0]
result_filename = File.split(result_url)[1]

# download picture
jpeg = open(result_url).read
open(result_filename, "wb"){|f|f.write(jpeg)}

puts "capture image=#{result_filename}"