1 files changed, 85 insertions, 0 deletions
diff --git a/day4/task3/client.py b/day4/task3/client.py
new file mode 100644
index 0000000..18bb2b1
--- /dev/null
+++ b/day4/task3/client.py
@@ -0,0 +1,85 @@
+import socket
+from time import sleep
+import struct
+import json
+
+
+HOST, PORT = ADDR = 'localhost', 6000
+DATATYPE_SIZE = 4  # int
+
+
+def pack_data(data):
+    encoded = data.encode()
+    return struct.pack('I', len(encoded)) + encoded
+
+
+def get_data(connection):
+    buffer = b''
+    # Считываем размер пакета
+    while len(buffer) < DATATYPE_SIZE:
+        data = connection.recv(DATATYPE_SIZE - len(buffer))
+        if not data:
+            raise ConnectionError('Connection was closed')
+
+        buffer += data
+
+    size_packed, buffer = buffer[:DATATYPE_SIZE], buffer[DATATYPE_SIZE:]
+    if not size_packed:
+        raise ConnectionError('Connection was closed')
+
+    (size,) = struct.unpack('I', size_packed)
+    data = connection.recv(size - len(buffer))
+    return buffer + data
+
+
+def parse_data(data):
+    return json.loads(data.decode())
+
+
+def try_connect():
+    cnt = 0
+    sock = socket.socket()
+    while cnt < 10:
+        try:
+            cnt += 1
+            sock.connect(ADDR)
+
+        except ConnectionRefusedError:
+            print('Не удалось подключиться к серверу. Следующая попытка через 3 секунды...')
+            sleep(3)
+
+        else:
+            return sock
+
+    else:
+        print('Не удалось подключиться к серверу через 10 попыток.\nОстанавливаемся...')
+        sock.close()
+        return
+
+
+def main():
+    sock = try_connect()
+    if sock is None:
+        quit()
+
+    while True:
+        try:
+            data = input('Введите модуль для поиска:\n')
+
+        except KeyboardInterrupt:
+            break
+
+        else:
+            sock.sendall(pack_data(data))
+            response = get_data(sock)
+            arr = parse_data(response)
+
+            print(f'Найдено {len(arr)} совпадений:')
+            for line in arr:
+                print(line)
+
+    sock.close()
+
+
+if __name__ == '__main__':
+    main()