Python TCP 服务器在一段时间后停止响应

Question

所以我在我的 RPI 上编写了这个 python 代码来创建一个与我的快思聪控制处理器对话的数字海报。由于某种原因，我的代码在一段时间后停止响应。我不知道为什么。 我不知道我的 Pi 是否会睡觉，但如果有人能指出我的代码中可能导致这种情况的任何内容，请告诉我。

编辑：我自己想出来的。非常感谢所有评论的人。

每次我通过循环时，我都在创建一个新的 FBI 进程，我最终用尽了 Pi 的所有 RAM，直到它停止，因为它没有任何剩余。我现在在加载修复该问题的图像后终止 FBI 进程。感谢大家的帮助。

我的功能和设置资料：

import socket
import os
import thread
import sys
import urllib
from time import ctime
from PIL import Image
import time
import random
import logging

frameBufferCommand = "sudo fbi -a -T 1 -d /dev/fb0 -noverbose "
moviePosterLocation = "/home/pi/movieposters/"
openBlackImage = "/home/pi/movieposters/special/black.jpg"
killFrameBuffer = "sudo killall fbi"
turnOffScreen = "sudo /opt/vc/bin/tvservice -o"
turnOnScreen = "sudo /opt/vc/bin/tvservice -p"

def splitString(input): 
    stringList = input.split("/x00/") 
    return stringList

def displayRandomPoster():
    displayingPoster = False
    fileCount = next(os.walk(moviePosterLocation))[2] #get the number of available posters
    print('Current # Of Posters in Directory: ' + str(len(fileCount)))

    attemptNumber = 0

    while not displayingPoster:
        posterToDisplay = random.randint(0, len(fileCount))
        print('Trying To Display A Random Poster')
        attemptNumber += 1

        try:
            image = Image.open(moviePosterLocation + fileCount[posterToDisplay]) #open the current image
            width, height = image.size
        except IndexError as msg:
            print("encountered an IndexError while opening an image")
            width = 0
            height = 0      
        except IOError as msg:
            print(msg)
        try:
            conn.send(msg)
        except socket.error as msg:
            print("Socket Error")


    if width > height:
        if attemptNumber > 5:
            print("Too Many Attempts, Stopping")
            break
        else:
            print("We Think This Isnt A Poster, Trying Again")               
            continue    
    else:
        try:
            conn.send("  Displaying Poster: " + str(fileCount[posterToDisplay]))
        except socket.error as msg:
            print msg                
        os.system(frameBufferCommand + moviePosterLocation + fileCount[posterToDisplay])
        displayingPoster = True
        return

正在监听的线程和主循环：

#-- CLIENT THREAD --

def client(conn):
    try:
        conn.send("Connected With Raspberry Pi")
        os.system(frameBufferCommand + openBlackImage)
    except socket.Error as msg:
        print(msg)

print(str(bindSuccess))

while 1:    
    dataReceived = conn.recv(1024)
    reply = "OK.. "
    conn.send(reply + dataReceived)
    dataList = splitString(dataReceived)
    print(dataList)
    if dataList[6] == "": 
        print("dataList[6] is empty, displaying a random poster")
        displayRandomPoster()
    else: 
        try:    
            moviePosterURL = dataList[6]            
            splitPosterURL = moviePosterURL.split("%")            
            moviePosterFilename = splitPosterURL[7]                
            urllib.urlretrieve(moviePosterURL, moviePosterLocation + moviePosterFilename)                
            conn.send("XBMC Movie Poster Downloading")
            conn.send("Movie Poster saved as: " + moviePosterLocation + moviePosterFilename)
            print("Movie Poster saved as: " + moviePosterLocation + moviePosterFilename)                            
        except socket.error:
            print("Encountered Socket Error While Downloading Poster - Line 80")            
        try:
            os.system(frameBufferCommand + moviePosterLocation + moviePosterFilename)
            print('Opening Downloaded Poster')
        except OSError as msg:
            print(str(msg[0]) + str(msg[1]))
    if not dataReceived:
        break
    time.sleep(1)


#-- MAIN FUNCTION --

host = ''
communicationPort = 5005

bindSuccess = False

crestronSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

print("Socket Created Successfully")

try:
    crestronSocket.bind((host, communicationPort))
    bindSuccess = True
except socket.Error as msg: 
    bindSuccess = False
    print("Socket Bind Error" + msg)
    sys.exit()

crestronSocket.listen(1)
print("Crestron Socket Listening")

while bindSuccess == True:
    #wait to accept a connection - blocking call
    conn, addr = crestronSocket.accept()
    print('Connected with Client: ' + addr[0] + ':' + str(addr[1]))      
    thread.start_new_thread(client , (conn,))
crestronSocket.close()

Answer 1

每次我通过循环时，我都会创建一个新的 FBI 进程，我最终用尽了 Pi 的所有 RAM，直到它停止，因为它没有任何剩余。我现在在加载修复该问题的图像后终止 FBI 进程。感谢大家的帮助。

我还想出了一些其他的东西，让它运行得更好/更无缝。