forked from asherchoi/emotion-predict-server
/
sample_server.py
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/
sample_server.py
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from socketserver import ThreadingTCPServer, BaseRequestHandler
from random import random
import numpy as np
import sys, logging, json, cv2, json, time
server_ip, server_port = '', 50000
logging.basicConfig(level=logging.INFO, format='%(asctime)s: %(message)s')
def jpeg_decoder(jpeg_data):
"""
Usage: Decode jpeg raw data to numpy array
return: numpy ndarray
"""
data_bytes = np.asarray(bytearray(jpeg_data), dtype=np.uint8)
np_img = cv2.imdecode(data_bytes, cv2.IMREAD_GRAYSCALE)
return np_img
class RequestHandler(BaseRequestHandler):
def setup(self):
logging.info('Client {} connect'.format(self.client_address[0]))
return BaseRequestHandler.setup(self)
def handle(self):
while (True): #persistent connection
try: #receive
data_len = int.from_bytes(self.my_recv(4), byteorder='little')
jpeg_data = self.my_recv(data_len)
np_face = jpeg_decoder(jpeg_data)
time.sleep(0.1)
report = {'joy': random(),
'calm': random(),
'sad': random(),
'stress':random()
}
except OSError as e:
logging.error(str(e))
return
except Exception as e:
logging.error(str(e))
reply = ['ERROR', str(e)]
else:
reply = ['OK', report]
reply_json = json.dumps(reply)
try:
self.request.send(bytes(reply_json, 'utf-8'))
except OSError as e:
logging.error(str(e))
return
def finish(self):
logging.info('Client {} disconnect'.format(self.client_address[0]))
return BaseRequestHandler.finish(self)
def my_recv(self, size):
more = size
msgs = []
while more > 0:
chunk = self.request.recv(more)
if chunk:
msgs.append(chunk)
else:
raise ConnectionError
more -= len(chunk)
return b''.join(msgs)
if __name__ == '__main__':
server = ThreadingTCPServer((server_ip, server_port), RequestHandler)
logging.info('Sample_server listening on port {}'.format(server_port))
server.serve_forever()