问题遇到的现象和发生背景
在python使用subprocess搭建了openssl s_server和s_client端，建立连接后，通过tkinter文本框发送通信内容。没有报错，但是通信内容不能成功发送，并且发送后通信连接关闭。
问题相关代码，请勿粘贴截图
import tkinter as tk
import tkinter.messagebox
import subprocess
import threading
import base64
myWindow=tk.Tk()
myWindow.title('post-quantumn + https')
myWindow.geometry('1050x800')
myWindow.resizable(width=True, height=True)
canvas = tk.Canvas(myWindow, bg='white',width=1050, height=800)
tk.Label(myWindow, text='CA',bg='red',width=10,height=2).place(x=100,y=20)
tk.Label(myWindow, text='server',bg='red',width=10,height=2).place(x=500,y=20)
tk.Label(myWindow, text='client',bg='red',width=10,height=2).place(x=850,y=20)
line = canvas.create_line(350, 0, 350, 800,width=1,fill='black')
line = canvas.create_line(700, 0, 700, 800,width=1,fill='black')
tk.Label(myWindow, text='operation',bg='white',width=10,height=1).place(x=100,y=70)
tk.Label(myWindow, text='operation',bg='white',width=10,height=1).place(x=500,y=70)
tk.Label(myWindow, text='operation',bg='white',width=10,height=1).place(x=850,y=70)
tk.Label(myWindow, text='file',bg='white',width=10,height=1).place(x=100,y=250)
tk.Label(myWindow, text='file',bg='white',width=10,height=1).place(x=500,y=250)
tk.Label(myWindow, text='file',bg='white',width=10,height=1).place(x=850,y=250)
tk.Label(myWindow, text='message',bg='white',width=10,height=1).place(x=100,y=390)
tk.Label(myWindow, text='massage',bg='white',width=10,height=1).place(x=500,y=390)
tk.Label(myWindow, text='message',bg='white',width=10,height=1).place(x=850,y=390)
global child1
class MyThread(threading.Thread):
def __init__(self, func, *args):
super().__init__()
self.func = func
self.args = args
self.setDaemon(True)
self.start()
def run(self):
self.func(*self.args)
def genCAkey():
tk.Label(myWindow, text='CA key',bg='red',width=12,height=1).place(x=80,y=270)
tk.Label(myWindow, text='1. genetarte CA key using algorithm.',bg='white',width=40,height=1).place(x=50,y=410)
CAkey=tk.Button(myWindow, text="generate CA key",command=genCAkey).place(x=80,y=90)
def genCAroot():
tk.Label(myWindow, text='CA root cert',bg='red',width=12,height=1).place(x=80,y=300)
tk.Label(myWindow, text='2. generate CA root cert using dilithium2.',bg='white',width=40,height=1).place(x=50,y=440)
subprocess.run(["/home/hannah/apps/openssl", "req", "-x509", "-new", "-newkey", "dilithium2", "-keyout", "dilithium2_CA.key", "-out", "dilithium2_CA.crt", "-nodes", "-subj", "/CN=oqtest", "-days", "365" ,"-config", "/home/hannah/apps/openssl.cnf"])
CAkey=tk.Button(myWindow, text="generate CA root cert",command=genCAroot).place(x=80,y=130)
def sign():
tk.Label(myWindow, text='server cert signed by CA',bg='red',width=20,height=1).place(x=80,y=360)
tk.Label(myWindow, text='5. sign server cert using dilithium2', bg='white',width=40,height=1).place(x=50,y=530)
subprocess.run(["/home/hannah/apps/openssl", "x509", "-req", "-in", "dilithium2_srv.csr", "-out", "dilithium2_srv.crt", "-CA", "dilithium2_CA.crt", "-CAkey", "dilithium2_CA.key", "-CAcreateserial", "-days", "365"])
CAkey=tk.Button(myWindow, text="sign server's cert",command=sign).place(x=80,y=170) #CA's operation
def genServerKey():
tk.Label(myWindow, text='server key',bg='red',width=12,height=1).place(x=460,y=270)
tk.Label(myWindow, text='3. generate server key using algorithm',bg='white',width=40,height=1).place(x=400,y=470)
subprocess.run(["/home/hannah/apps/openssl", "genpkey", "-algorithm", "dilithium2", "-out", "dilithium2_srv.key"])
CAkey=tk.Button(myWindow, text="generate server key",command=genServerKey).place(x=460,y=90)
def genCSR():
tk.Label(myWindow, text='CSR from server',bg='red',width=15,height=1).place(x=80,y=330)
tk.Label(myWindow, text='4. generate cert sign request, sending to CA',bg='white',width=40,height=1).place(x=400,y=500)
subprocess.run(["/home/hannah/apps/openssl", "req", "-new", "-newkey", "dilithium2", "-keyout", "dilithium2_srv.key", "-out", "dilithium2_srv.csr", "-nodes", "-subj", "/CN=oqtest server","-config", "/home/hannah/apps/openssl.cnf" ])
CAkey=tk.Button(myWindow, text="generate cert sign request",command=genCSR).place(x=460,y=130)
def importcert():
global child1
tk.Label(myWindow, text='server cert signed by CA',bg='red',width=20,height=1).place(x=460,y=300)
tk.Label(myWindow, text='6. import serber cert signed by CA',bg='white',width=40,height=1).place(x=400,y=560)
child1=subprocess.Popen(["/home/hannah/apps/openssl", "s_server", "-accept", "10001", "-key", "dilithium2_srv.key", "-cert", "dilithium2_srv.crt"], stdin=subprocess.PIPE)
CAkey=tk.Button(myWindow, text="import server's cert",command=lambda :MyThread(importcert)).place(x=460,y=170)
def sendmessageS(): ######
window_server_msg = tk.Toplevel(myWindow)
window_server_msg.geometry('300x200')
window_server_msg.title('Server\'s message')
text1 = tk.Text(window_server_msg, height=10)
text1.place(x=75, y=50)
def closeServer():
window_server_msg.destroy()
def sendserver():
smsg=text1.get("1.0" , "end")
smsg2=smsg.encode()
smsg3=base64.b64encode(smsg2)
child1.communicate(smsg3)
#print(smsg)
tk.Button(window_server_msg, text='send', command=lambda :MyThread(sendserver)).place(x=50, y=150)
tk.Button(window_server_msg, text='close', command=closeServer).place(x=175, y=150)
CAkey=tk.Button(myWindow, text="send message",command=sendmessageS).place(x=460,y=210) #server's operation
def setKEX():
tk.Label(myWindow, text='CA private key',bg='red',width=12,height=1).place(x=150,y=20)
tk.Label(myWindow, text='7. negotiate KEX: kyber512 and inform server',bg='white',width=40,height=1).place(x=750,y=590)
CAkey=tk.Button(myWindow, text="negotiate KEX",command=setKEX).place(x=830,y=90)
def getCAroot():
tk.Label(myWindow, text='CA root cert',bg='red',width=12,height=1).place(x=830,y=270)
tk.Label(myWindow, text='8. import CA root cert to client',bg='white',width=40,height=1).place(x=750,y=620)
subprocess.run(["/home/hannah/apps/openssl", "s_client", "-groups", "kyber512", "-CAfile", "dilithium2_CA.crt", "-connect", "localhost:10001"])
CAkey=tk.Button(myWindow, text="import CA's root cert",command=lambda :MyThread(getCAroot)).place(x=830,y=130)
def sendmessageC(): #####
window_client_msg = tk.Toplevel(myWindow)
window_client_msg.geometry('300x200')
window_client_msg.title('Client\'s message')
CAkey=tk.Button(myWindow, text="send message",command=sendmessageC).place(x=830,y=170) #client's operation
canvas.pack()
myWindow.mainloop()
运行结果及报错内容
https连接断开后，显示下图内容
我的解答思路和尝试过的方法
我想要达到的结果
在text1文本框输入server发给client的消息，能正确显示
