使用UDP启动流传输

Question

[每个人，我正在尝试在树莓派3的终端之间进行一些语音流传输，我能够使用一些python代码并实现该目标，但问题是我正在使用TCP，所以存在一些延迟，我想改用UDP每当我改变时都会遇到问题将socket.SOCK_STREAM转换为DGRAM并删除serversocket.listen（5），代码可以正常工作，但是没有连接。

服务器

import socket
import select

FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 4096

audio = pyaudio.PyAudio()

serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serversocket.bind(('', 4444))
serversocket.listen(5)


def callback(in_data, frame_count, time_info, status):
    for s in read_list[1:]:
        s.send(in_data)
    return (None, pyaudio.paContinue)


# start Recording
stream = audio.open(format=FORMAT, channels=CHANNELS, rate=RATE, input=True, frames_per_buffer=CHUNK, stream_callback=callback)
# stream.start_stream()

read_list = [serversocket]
print ("recording...")

try:
    while True:
        readable, writable, errored = select.select(read_list, [], [])
        for s in readable:
            if s is serversocket:
                (clientsocket, address) = serversocket.accept()
                read_list.append(clientsocket)
                print ("Connection from", address)
            else:
                data = s.recv(1024)
                if not data:
                    read_list.remove(s)
except KeyboardInterrupt:
    pass


print ("finished recording")

serversocket.close()
# stop Recording
stream.stop_stream()
stream.close()
audio.terminate()

客户

#!/usr/bin/env python

import pyaudio
import socket
import sys

FORMAT = pyaudio.paInt16
CHANNELS = 1
RATE = 44100
CHUNK = 4096

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect((192.168.1.120, 5555))
audio = pyaudio.PyAudio()
stream = audio.open(format=FORMAT, channels=CHANNELS, rate=RATE, output=True, frames_per_buffer=CHUNK)

try:
    while True:
        data = s.recv(CHUNK)
        stream.write(data)
except KeyboardInterrupt:
    pass

print('Shutting down')
s.close()
stream.close()
audio.terminate()

Answer 1

代码有效

那是什么意思？是否正在发送/接收数据？UDP是connectionless protocol，因此没有连接是有意义的。