send file function

test.py

@@ -0,0 +1,80 @@
+import time
+import threading
+import socket
+import queue
+import sys
+send_queue = queue.Queue() 
+
+def recv():
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+    s.bind(('127.0.0.1', 3900))
+    s.listen(39)
+    while True:
+        conn, addr = s.accept()
+        thread = threading.Thread(target=process_connection, args=(conn, addr), daemon=True)
+        thread.start()
+
+def process_connection(conn, addr):
+    while True:
+        data = conn.recv(4096)
+        if not data:
+            conn.close()
+            return
+        check_data.queue.put(data)
+        time.sleep(1)
+
+class Check_data:
+    def __init__(self):
+        self.queue = queue.Queue()
+        self.thread = threading.Thread(target=self.recv, args=(), daemon=True)
+        self.thread.start()
+    
+    def recv(self):
+        while True:
+            data = self.queue.get()
+            s_print(data)
+
+def send(size, c):
+    data = c*size
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    s.connect(('127.0.0.1', 3900))
+    s_print('start sending %s' % c)
+    
+    start_time = time.time()
+    s.sendall(data)
+    end_time = time.time()
+
+    s_print('Send %s finished, take %s' % (c, end_time - start_time))
+
+def print_queue():
+    while True:
+        word = send_queue.get()
+        print(word)
+
+def s_print(data):
+    send_queue.put(data)
+
+check_data = Check_data()
+
+time.sleep(1)
+
+thread_print = threading.Thread(target=print_queue, args=(), daemon=True)
+thread_print.start()
+
+
+thread_recv = threading.Thread(target=recv, args=(), daemon=True)
+thread_recv.start()
+print('recv thread started')
+time.sleep(1)
+
+thread_send_1 = threading.Thread(target=send, args=(100000000, b'1'), daemon=True)
+thread_send_2 = threading.Thread(target=send, args=(100000000, b'2'), daemon=True)
+
+thread_send_1.start()
+thread_send_2.start()
+
+input()
+sys.exit()
+
+# 结论，多线程同时对一个socket.sendall()调用，会导致数据混乱