bottle cv2 mjpeg server

mjpeg.py

#!/usr/bin/env python2
# https://gist.github.com/ph1ee/58d55a736462cc2f4f2d
from gevent import monkey; monkey.patch_all()
from bottle import route, run, template, request, response
import cv2

from bottle import debug
debug(True)

CRLF = "\r\n"


class MJPEG(object):
	def __init__(self):
		self.cap = cv2.VideoCapture(0)

	def __del__(self):
		self.cap.release()

	def __iter__(self):
		return self

	def next(self):
		try:
			ret, img = self.cap.read()
			if ret:
				ret, jpg = cv2.imencode('.jpg', img)
				if ret:
					out = "--jpgboundary"
					out += "Content-type: image/jpeg" + CRLF
					out += "Content-length: " + str(jpg.size) + CRLF + CRLF
					print('loop')
					return out + jpg.tostring()
			return "error"
		except:
			exit()

	def stop(self):
		pass


@route('/ip')
def show_ip():
	ip = request.environ.get('REMOTE_ADDR')
	# or ip = request.get('REMOTE_ADDR')
	# or ip = request['REMOTE_ADDR']
	return template("Your IP is: {{ip}}", ip=ip)


@route('/hello/<name>')
def index(name):
	return template('<b>Hello {{name}}</b>!', name=name)


@route('/image')
def capture():
	response.headers['Content-Type'] = 'multipart/x-mixed-replace; boundary=--jpgboundary'
	return iter(MJPEG())


@route('/bye')
def ret():
	d = {'a': 5}
	return d  # automagically converts to json


run(host='localhost', port=8080, server='gevent')