如何同時發送和接收消息python sockets

Question

我正在嘗試學習套接字編程，目前有以下server和client代碼，但問題是服務器和/或客戶端無法同時發送和接收消息，他們輪流發送和接收消息。

我看過下面的例子，但答案似乎並沒有解決問題，或者我跟錯了。

Python Socket - 同時發送/接收消息

服務器

import socket
import threading
s = socket.socket()
host = socket.gethostname()
port = 8080
s.bind((host, port))
s.listen(1)
print("Waiting for connections")
conn, addr = s.accept()
print("Client has connected")
conn.send("Welcome to the server".encode())

def recv_msg():
    while True:
        recv_msg = conn.recv(1024)
        if not recv_msg:
            sys.exit(0)
        recv_msg = recv_msg.decode()
        print(recv_msg)

def send_msg():
    send_msg = input(str("Enter message: "))
    send_msg = send_msg.encode()
    conn.send(send_msg)
    print("message sent")

while True:
    send_msg()

t = threading.Thread(target=recv_msg)
t.start()

客戶

import socket
import threading
s = socket.socket()
host = socket.gethostname()
port = 8080
s.connect((host, port))
print("Connected to the server")
message = s.recv(1024)
message = message.decode()
print(message)

def recv_msg():
    while True:
        recv_msg = s.recv(1024)
        if not recv_msg:
            sys.exit(0)
        recv_msg = recv_msg.decode()
        print(recv_msg)

def send_msg():
    send_msg = input(str("Enter message: "))
    send_msg = send_msg.encode()
    s.send(send_msg)
    print("Message sent")

while True:
    send_msg()

t = threading.Thread(target=recv_msg)
t.start()

我最終正在嘗試創建一個類似於 Whatsapp/Imessage 等的聊天應用程序（使用 kivy），我還沒有找到有關如何執行此操作的教程（我見過的所有教程都是關於創建聊天室的）所以如果有人看過那將不勝感激。

Answer 1

在客戶端和服務器中，您必須在運行循環之前啟動線程， while True: send_msg()

t = threading.Thread(target=recv_msg)
t.start()

while True:
    send_msg()

---

編輯：

服務器.py

import socket
import threading
import sys

# --- functions ---

def recv_msg():
    while True:
        recv_msg = conn.recv(1024)
        if not recv_msg:
            sys.exit(0)
        recv_msg = recv_msg.decode()
        print(recv_msg)

def send_msg():
    while True:
        send_msg = input(str("Enter message: "))
        send_msg = send_msg.encode()
        conn.send(send_msg)
        print("message sent")

# --- main ---

host = socket.gethostname()
port = 8080

s = socket.socket()
s.bind((host, port))
s.listen(1)

print("Waiting for connections")
conn, addr = s.accept()

print("Client has connected")
conn.send("Welcome to the server".encode())

# thread has to start before other loop
t = threading.Thread(target=recv_msg)
t.start()

send_msg()

客戶端.py

import socket
import threading
import sys

# --- functions ---

def recv_msg():
    while True:
        recv_msg = s.recv(1024)
        if not recv_msg:
            sys.exit(0)
        recv_msg = recv_msg.decode()
        print(recv_msg)

def send_msg():
    while True:
        send_msg = input(str("Enter message: "))
        send_msg = send_msg.encode()
        s.send(send_msg)
        print("Message sent")

# --- main ---

host = socket.gethostname()
port = 8080

s = socket.socket()
s.connect((host, port))

print("Connected to the server")

message = s.recv(1024)
message = message.decode()
print(message)

# thread has to start before other loop
t = threading.Thread(target=recv_msg)
t.start()

send_msg()