python-如何獲取套接字連接狀態？

Question

嗨！

我是python的初學者，我想在這里問。 我有代碼。 當我單擊按鈕（btn_connect）時，套接字將連接到電視（函數self.connection（））。 有沒有辦法檢查套接字連接並獲得連接或斷開連接？ 我想將其寫入文本字段，例如“狀態：已連接”

這是我的代碼：

import fcntl, socket, struct
import base64
import time, datetime
import netifaces
from Tkinter import *

def getMyMac1(ifname):
    s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    info = fcntl.ioctl(s.fileno(), 0x8927,  struct.pack('256s', ifname[:15]))
    return '-'.join(['%02x' % ord(char) for char in info[18:24]])


myip = netifaces.ifaddresses(netifaces.gateways()['default'][netifaces.AF_INET][1])[netifaces.AF_INET][0]['addr']
mymac = getMyMac1(netifaces.gateways()['default'][netifaces.AF_INET][1])
appstring = "Pepin's Samsung TV Remote"
remotename = "Pepin's Samsung TV Remote"

def sendKey(skey, dataSock, appstring):
 messagepart3 = chr(0x00) + chr(0x00) + chr(0x00) + chr(len(
base64.b64encode(skey))) + chr(0x00) + base64.b64encode(skey);
 part3 = chr(0x00) + chr(len(appstring)) + chr(0x00) \
+ appstring + chr(len(messagepart3)) + chr(0x00) + messagepart3
 dataSock.send(part3);

root = Tk()
root.title("Pepin's Samsung TV Remote")
root.geometry("391x595")

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
ipencoded = base64.b64encode(myip)
macencoded = base64.b64encode(mymac)

messagepart1 = chr(0x64) + chr(0x00) + chr(len(ipencoded)) \
+ chr(0x00) + ipencoded + chr(len(macencoded)) + chr(0x00) \
+ macencoded + chr(len(base64.b64encode(remotename))) + chr(0x00) \
+ base64.b64encode(remotename)
part1 = chr(0x00) + chr(len(appstring)) + chr(0x00) + appstring \
+ chr(len(messagepart1)) + chr(0x00) + messagepart1
messagepart2 = chr(0xc8) + chr(0x00)
part2 = chr(0x00) + chr(len(appstring)) + chr(0x00) + appstring \
+ chr(len(messagepart2)) + chr(0x00) + messagepart2

class Application():
    """Pepin's Samsung TV Remote"""

    def __init__(self, master):

        self.master = master
        self.create_widgets()

    def connection(self):

        sock.connect((self.entry_tvip.get(), 55000))
        sock.send(part1)
        sock.send(part2)

        self.tvappstring = app.entry_tvappstring.get()

    def create_widgets(self):

        label_tvip = Label(self.master, text="TV IP:")
        label_tvip.grid(row=3, column=3, columnspan=1, padx=(15,0), ipady=8)

        self.entry_tvip = Entry(self.master, width=16)
        self.entry_tvip.grid(row=3, column=4, columnspan=3, ipady=8)

        label_tvappstring = Label(self.master, text="TV MODEL (Tv App String)")
        label_tvappstring.grid(row=4, column=3, columnspan=4, padx=(15,0), ipady=8, sticky=W)

        self.entry_tvappstring = Entry(self.master, width=22)
        self.entry_tvappstring.grid(row=5, column=3, columnspan=4, padx=(15,0), ipady=8)
        self.entry_tvappstring.insert(0, "UE55C8000")

        btn_connect = Button(self.master, text = "CONNECT TO TV", width=19, height=2, command = lambda: self.connection()) 
            btn_connect.grid(row=6, column=3, columnspan=5, padx=(15,0))     

app = Application(root)
root.mainloop()

sock.close()

請幫我。 謝謝！

Answer 1

連接的插座：

您的流連接的套接字塊和recv（）在另一端關閉時返回“”。 所以有你的身份。

UDP：

數據報UDP套接字被廣播，因此狀態與連接的狀態相比有點模糊。

您的電視產品肯定有有關UDP流程的文檔，對嗎？ 例如sendto（）狀態請求或等效概念。

http://www.binarytides.com/programming-udp-sockets-in-python/