初步实现服务器和终端能连接，并且终端向服务端发起请求并取得响应

conf/settings.ini

@@ -0,0 +1,4 @@
+[server]
+port = 7777
+daemon = True
+

dcs/main.py

@@ -1,3 +1,19 @@
 # -*- coding: UTF-8 -*-
-import server
+from dcs.tests.server import Server
-import requestHandler
+from configparser import ConfigParser
+
+print('reading config args...')
+configFile = '../conf/settings.ini'
+con = ConfigParser()
+con.read(configFile, encoding='utf-8')
+items = con.items('server')
+items = dict(items)
+print(items)
+
+print('starting the server...')
+server = Server(int(items['port']))
+server.daemon = items['daemon']
+server.start()
+server.join()
+
+print('success')

dcs/server.py

@@ -1 +0,0 @@
-

dcs/tests/client.py

@@ -0,0 +1,95 @@
+# -*- coding: UTF-8 -*-
+import struct
+from threading import Thread
+import socket
+from json import JSONEncoder, JSONDecoder
+import sys
+
+# -------------------------------配置--------------------------------------------
+# ------------------------------config--------------------------------------------
+
+if len(sys.argv) < 2:
+    ip = "127.0.0.1"  # server的ip
+else:
+    ip = sys.argv[1]
+port = 7777  # server的port
+
+
+def read_bytes(s: 'socket.socket', size: 'int') -> 'bytes':
+    """
+    从socket读取size个字节
+    :param s:套接字
+    :param size:要读取的大小
+    :return:读取的字节数，在遇到套接字关闭的情况下，返回的数据的长度可能小于 size
+    """
+    data = ''.encode('utf-8')
+    while len(data) < size:
+        rsp_data = s.recv(size - len(data))
+        data += rsp_data
+        if len(rsp_data) == 0:
+            break
+    return data
+
+
+def generate_request(request) -> 'bytes':
+    """
+    根据传入的dict生成请求
+    请求包含 8字节头长度+头数据
+    :param request: dict
+    :return: bytes 请求数据
+    """
+    request_bytes = JSONEncoder().encode(request).encode("utf-8")
+    return struct.pack("!Q", len(request_bytes)) + request_bytes
+
+
+class Client(Thread):
+    def __init__(self, ip: str, port: int) -> None:
+        """
+        :param ip: 服务器IP
+        :param port: 服务器端口
+        """
+        super().__init__()
+        self.ip = ip
+        self.port = port
+
+    def test(self) -> 'int':
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP) as socket_to_server:
+            socket_to_server.connect((self.ip, self.port))
+            request = dict()
+            request['action'] = 'test'
+
+            full_request = generate_request(request)
+
+            socket_to_server.sendall(full_request)
+
+            responseJson = JSONDecoder().decode(
+                read_bytes(socket_to_server, struct.unpack('!Q', socket_to_server.recv(8))[0]).decode(
+                    "utf-8"))
+
+            return responseJson['test']
+
+    def end(self):
+        """
+        结束通信
+        :return:
+        """
+        with socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP) as socket_to_server:
+            socket_to_server.connect((self.ip, self.port))
+            request = dict()
+            request['action'] = 'end'
+
+            full_request = generate_request(request)
+
+            socket_to_server.sendall(full_request)
+
+            print("end communication!")
+
+    def run(self) -> None:
+        self.test()
+        self.end()
+
+
+download_task = Client(ip, port)
+download_task.daemon = True
+download_task.start()
+download_task.join()

dcs/tests/requestHandler.py

@@ -15,10 +15,10 @@ class RequestHandler(threading.Thread):
 
     def run(self) -> None:
         try:
-            if self.request_map['action'] == 'getFileSize':
+            if self.request_map['action'] == 'test':
-                print(f"[REQUEST] getFileSize")
+                print(f"[REQUEST] test")
                 response = {
-                    'fileSize': self.file_server.get_file_size()
+                    'test': 'hello TEST'
                 }
                 response_binary = json.JSONEncoder().encode(response).encode("utf-8")
                 response_binary_len = len(response_binary)
@@ -26,6 +26,6 @@ class RequestHandler(threading.Thread):
 
                 response_binary = response_binary_len_binary + response_binary
                 self.client_socket.sendall(response_binary)
-                print(f"[RESPONSE] file size: {response['fileSize']}, header size: {response_binary_len}")
+                print(f"[RESPONSE] test: {response['test']}, header size: {response_binary_len}")
         finally:
             self.client_socket.close()

dcs/tests/server.py

@@ -0,0 +1,41 @@
+import threading
+import socket
+import json
+import struct
+from dcs.tests.requestHandler import RequestHandler
+
+
+def read_bytes(s: 'socket.socket', size: 'int') -> 'bytes':
+    data = ''.encode('utf-8')
+    while len(data) < size:
+        rsp_data = s.recv(size - len(data))
+        data += rsp_data
+        if len(rsp_data) == 0:
+            break
+    return data
+
+
+class Server(threading.Thread):
+    def __init__(self, port: 'int'):
+        super().__init__()
+        self.port: 'int' = port
+        self.server_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM, socket.IPPROTO_TCP)
+        self.server_socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+        self.server_socket.bind(('', port))
+        self.buffer_size = 8 * 1024 * 1024
+
+    def run(self) -> None:
+        self.server_socket.listen()
+        while True:
+            client_socket, _ = self.server_socket.accept()
+            request_header_size = struct.unpack("!Q", read_bytes(client_socket, 8))[0]
+            request_map = json.JSONDecoder().decode(read_bytes(client_socket, request_header_size).decode("utf-8"))
+            print(request_map)
+            # end请求要在主线程处理，不然退出就不会及时响应
+            if request_map['action'] == 'end':
+                print(f"[REQUEST] end")
+                print("communication over!")
+                break
+            r = RequestHandler(self, client_socket, request_map)
+            r.start()
+        self.server_socket.close()