Python Tkinter socket.recv 没有收到答案

【问题标题】：Python Tkinter socket.recv not receivingPython Tkinter socket.recv 没有收到
【发布时间】：2014-06-27 16:31:09
【问题描述】：

我正在尝试使用 Python Tkinter 制作一个聊天程序，但我的 recv 函数 recvMSG() 要么没有收到任何内容，要么不打印任何内容。

您能帮我解决接收问题吗？随意更改代码。

from Tkinter import *
import easygui
import socket
import threading
msgscount = 1

setup = False

def makeServer():
    global tcpclisock
    host = ''
    port = easygui.integerbox(msg='Enter a port...', title='Port', argUpperBound=100000)
    buffsize = 1024
    addr = (host, port)
    setup = True

    tcpsersock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    tcpsersock.bind(addr)
    tcpsersock.listen(5)
    tcpclisock, addr = tcpsersock.accept()
    easygui.msgbox(msg=('Connected from: ', addr), title='Connected')

def connectServer():
    global tcpclisock
    setup = True
    host = easygui.choicebox(msg='Choose a host...', title='Choose Host', choices=('localhost'),buttons=('Select'))
port = easygui.integerbox(msg='Enter a port...', title='Port', argUpperBound=100000)
buffsize = 1024
addr = (host, port)

tcpclisock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tcpclisock.connect(addr)

def sendMSG():
    global msgscount, tcpclisock
    try:
        msgs.insert(msgscount, ">>" + msg.get())
        data = msg.get()
        msg.delete(0,END)
        msgscount += 1
        tcpclisock.send(data)
    except:
        easygui.msgbox(msg='You need to connect to a server.', title='Error')


def recvMSG():
    global msgscount,tcpclisock
    if setup == True:
        datar = tcpclisock.recv(buffsize)
        msgs.insert(msgscount, datar)
        msgscount += 1
        top.after(1000, recvMSG)
    else:
        answ = easygui.buttonbox(msg='Please join or create a server', title='Server', choices=("Create", 'Join'))
        if answ == "Create":
            makeServer()
        else:
            connectServer()


top = Tk()
top.geometry('640x650')

msgs = Listbox(top, width=105, height=43)
msgs.pack()

msg = Entry(top, bd=2, width=60, font='Arial 12 bold')
msg.pack(side=LEFT)

sendbtn = Button(top, text='Send', font='Arial 15 bold',width=15, padx=5, pady=5,command=runSendMSG)
sendbtn.pack(side=RIGHT)

menubar = Menu(top)
servermenu = Menu(menubar, tearoff=0)
servermenu.add_command(label="Create Server", command=makeServer)
servermenu.add_command(label="Join Server", command=connectServer)
menubar.add_cascade(label='Server', menu=servermenu)

top.config(menu=menubar)

top.after(5000, recvMSG)
mainloop()

【问题讨论】：

您是否尝试在终端/cmd 中运行它？您是否收到错误消息（引用）？我尝试运行它，但是：1) 在sendbtn 中，你有command=runSendMSG，但你没有runSendMSG()。 2) 当你使用setup 时，在所有函数中使用global setup。 3) 错误消息NameError: global name 'buffsize' is not defined。等
我运行代码，但服务器和客户端同时使用recv()，并且都在等待消息，所以都挂起。你可能还需要setblocking(0)

标签： python sockets tkinter connection chat

【解决方案1】：

我没有easygui，所以我删除了一些代码

from Tkinter import *
#import easygui
import socket
#import threading

msgscount = 1

setup = False
buffsize = 1024

def makeServer():
    global tcpclisock,setup,buffsize
    host = ''
    port = 9000
    buffsize = 1024
    addr = (host, port)
    setup = True

    print "makeServer():"

    tcpsersock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    tcpsersock.bind(addr)
    tcpsersock.listen(5)
    tcpclisock, addr = tcpsersock.accept()
    tcpclisock.setblocking(0)
    print 'Connected from: ', addr
    top.after(1000, recvMSG)

def connectServer():
    global tcpclisock,setup,buffsize
    setup = True
    host = ''
    port = 9000
    buffsize = 1024
    addr = (host, port)

    tcpclisock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    tcpclisock.connect(addr)
    print 'Connected to: ', addr
    tcpclisock.setblocking(0)
    top.after(1000, recvMSG)

def sendMSG():
    print 'sendMSG():'
    global msgscount, tcpclisock,setup
    try:
        msgs.insert(msgscount, ">>" + msg.get())
        data = msg.get()
        msg.delete(0,END)
        msgscount += 1
        print tcpclisock.send(data)
    except:
        print 'You need to connect to a server.'


def recvMSG():
    global msgscount,tcpclisock,setup,buffsize
    print 'recvMSG():', setup
    if setup == True:
        try:
            datar = tcpclisock.recv(buffsize)
            msgs.insert(msgscount, datar)
            msgscount += 1
        except:
            pass
        top.after(1000, recvMSG)
    else:
        pass
        answ = "Create"
        if answ == "Create":
            makeServer()
        else:
            connectServer()


top = Tk()
#top.geometry('640x650')

msgs = Listbox(top, width=105, height=43)
msgs.pack()

msg = Entry(top, bd=2, width=60, font='Arial 12 bold')
msg.pack()

sendbtn = Button(top, text='Send', font='Arial 15 bold', width=15, padx=5, pady=5, command=sendMSG)
sendbtn.pack()

menubar = Menu(top)
servermenu = Menu(menubar, tearoff=0)
servermenu.add_command(label="Create Server", command=makeServer)
servermenu.add_command(label="Join Server", command=connectServer)
menubar.add_cascade(label='Server', menu=servermenu)

top.config(menu=menubar)

mainloop()

【讨论】：