python - 为什么我的服务器的 recv 没有从客户端获取数据？

import sys import os import socket, cv2, pickle, struct import imutils import threading import pyshine as ps PORT = 9998 HOST_IP = "0.0.0.0" clients = {} MAX_SIZE = 8 class Server(object): def __init__(self): """ constructor""" self.server_socket = None try: self.server_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM) self.host_name = socket.gethostname() host_ip = HOST_IP # socket.gethostbyname(host_name) port = PORT self.socket_address = (host_ip,port) self.server_socket.bind(self.socket_address) self.server_socket.listen() print("Listening at", self.socket_address) #self.server_socket.accept() except socket.error as e: print("error: ", e) sys.exit(-1) except Exception as e: print("error: ", e) sys.exit(-1) def recv_frame(self, addr, client_socket): try: print('CLIENT {} CONNECTED!'.format(addr)) if client_socket: # if a client socket exists data = b"" payload_size = struct.calcsize("Q") while True: while len(data) < payload_size: packet = client_socket.recv(4*1024) # 4K if not packet: break data += packet packed_msg_size = data[:payload_size] data = data[payload_size:] msg_size = struct.unpack("Q", packed_msg_size)[0] while len(data) < msg_size: data += client_socket.recv(4*1024) frame_data = data[:msg_size] data = data[msg_size:] frame = pickle.loads(frame_data) text = f"CLIENT: {addr}" frame = ps.putBText(frame,text,10,10,vspace=10,hspace=1,font_scale=0.7, background_RGB=(255,0,0),text_RGB=(255,250,250)) cv2.imshow(f"FROM {addr}", frame) key = cv2.waitKey(1) & 0xFF if key == ord('q'): break self.client_socket.close() except Exception as e: print(f"CLINET {addr} DISCONNECTED") pass def handle_client(self): try: client_socket, addr = self.server_socket.accept() name_len = (client_socket.recv(8)) name_len = name_len.decode() name = client_socket.recv(int(name_len)) clients[name] = client_socket thread = threading.Thread(target=self.recv_frame, args=(addr,clients[name])) thread.start() print("TOTAL CLIENTS ",threading.activeCount() - 1) except Exception as msg: print("error in handle_client: ", msg) def main(): """ Add Documentation here """ sr = Server() sr.handle_client() if __name__ == '__main__': main()

import sys import os import socket,cv2, pickle,struct import pyshine as ps import imutils import time PORT = 9998 EXIT = -1 MY_IP = "127.0.0.1" MAX_SIZE = 8 TIME_SLEEP = 0.1 WID = 3 HIGH = 4 WIDTH = 680 HEIGHT = 480 CAPTURE = 0 START_OF_RANGE = 0 BUF = 512 # ?? class Client(object): """ class describing a Client """ def __init__(self, port): """ Client socket initiation """ try: self.camera = True if self.camera: self.vid = cv2.VideoCapture(0, cv2.CAP_DSHOW) else: self.vid = cv2.VideoCapture('videos/ham.mp4', cv2.CAP_DSHOW) self.send_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM) self.recv_socket = socket.socket(socket.AF_INET,socket.SOCK_STREAM) self.host_ip = MY_IP # server ip address self.port = port self.send_socket.connect((self.host_ip, self.port)) except socket.error as msg: print('Connection failure: %s\n terminating program' % msg) sys.exit(EXIT) except Exception as msg: print("general error in constructor: ", msg) def send_video(self): """ """ if self.send_socket: while (self.vid.isOpened()): try: self.send_socket = Client.initialize_socket(MY_IP, PORT) name = "ella" # name of client name_len = len(name) Client.send_chunk(name, self.send_socket) message = Client.recv_message(self.send_socket) while message == "hold": time.sleep(TIME_SLEEP) message = Client.recv_message(self.send_socket) print(message) capture = cv2.VideoCapture(CAPTURE, cv2.CAP_DSHOW) capture.set(WID, WIDTH) capture.set(HIGH, HEIGHT) code = "start" # ??? while capture.isOpened(): # try: ret, frame = capture.read() if ret: Client.send_chunk(code, self.send_socket) data = frame.tobytes() for i in range(START_OF_RANGE, len(data), BUF): self.send_chunk(data[i:i+BUF], self.send_socket) time.sleep(TIME_SLEEP) else: break except Exception as msg: print("error in send_video: ", msg) #self.send_socket.close() #self.recv_socket.listen() except Exception as msg: print('error in send_video: ', msg) break @staticmethod def initialize_socket(ip, port): """ initializes socket. """ try: s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) print("ip {}, port {}".format(ip, port)) s.connect((ip, port)) return s except Exception as msg: print ("error in initialize_socket: ", msg) @staticmethod def send_chunk(chunk, sock): """ gets and sends a chunk to server. """ try: length = len(chunk) data = str(length).zfill(MAX_SIZE) data = data.encode() sock.sendall(data) data = chunk.encode() sock.send(data) except Exception as msg: print("error in send_chunk: ", msg) @staticmethod def recv_message(sock): """ receives message and returns the message. """ try: raw_data = sock.recv(MAX_SIZE) data = raw_data.decode() message = str(sock.recv(int(data))).decode() return message except Exception as msg: #sock.close() print("error in receive_message: ", msg) def threads(self): """ """ thread = threading.Thread(target=self.send_video) thread.start() print("TOTAL CLIENTS ",threading.activeCount() - 1) cln = Client(PORT) cln.send_video() '''