diff --git a/Messanger/.idea/workspace.xml b/Messanger/.idea/workspace.xml
index f31c5ca..04d368e 100644
--- a/Messanger/.idea/workspace.xml
+++ b/Messanger/.idea/workspace.xml
@@ -10,12 +10,24 @@
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
   <component name="FileEditorManager">
-    <leaf>
-      <file leaf-file-name="__main__.py" pinned="false" current-in-tab="true">
+    <leaf SIDE_TABS_SIZE_LIMIT_KEY="300">
+      <file leaf-file-name="__main__.py" pinned="false" current-in-tab="false">
         <entry file="file://$PROJECT_DIR$/server/__main__.py">
           <provider selected="true" editor-type-id="text-editor">
-            <state relative-caret-position="120">
-              <caret line="29" selection-start-line="29" selection-end-line="29" />
+            <state relative-caret-position="525">
+              <caret line="35" column="97" selection-start-line="35" selection-start-column="97" selection-end-line="35" selection-end-column="97" />
+              <folding>
+                <element signature="e#0#35#0" expanded="true" />
+              </folding>
+            </state>
+          </provider>
+        </entry>
+      </file>
+      <file leaf-file-name="__main__.py" pinned="false" current-in-tab="true">
+        <entry file="file://$PROJECT_DIR$/client/__main__.py">
+          <provider selected="true" editor-type-id="text-editor">
+            <state relative-caret-position="210">
+              <caret line="26" column="97" selection-start-line="26" selection-start-column="97" selection-end-line="26" selection-end-column="97" />
               <folding>
                 <element signature="e#0#35#0" expanded="true" />
               </folding>
@@ -25,11 +37,24 @@
       </file>
     </leaf>
   </component>
-  <component name="ProjectFrameBounds" extendedState="6">
+  <component name="FindInProjectRecents">
+    <findStrings>
+      <find>get_response_msg</find>
+    </findStrings>
+  </component>
+  <component name="IdeDocumentHistory">
+    <option name="CHANGED_PATHS">
+      <list>
+        <option value="$PROJECT_DIR$/server/__main__.py" />
+        <option value="$PROJECT_DIR$/client/__main__.py" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectFrameBounds" extendedState="7">
     <option name="x" value="840" />
-    <option name="y" value="27" />
-    <option name="width" value="820" />
-    <option name="height" value="1023" />
+    <option name="y" value="25" />
+    <option name="width" value="840" />
+    <option name="height" value="1025" />
   </component>
   <component name="ProjectView">
     <navigator proportions="" version="1">
@@ -43,6 +68,16 @@
               <item name="Messanger" type="b2602c69:ProjectViewProjectNode" />
               <item name="Messanger" type="462c0819:PsiDirectoryNode" />
             </path>
+            <path>
+              <item name="Messanger" type="b2602c69:ProjectViewProjectNode" />
+              <item name="Messanger" type="462c0819:PsiDirectoryNode" />
+              <item name="client" type="462c0819:PsiDirectoryNode" />
+            </path>
+            <path>
+              <item name="Messanger" type="b2602c69:ProjectViewProjectNode" />
+              <item name="Messanger" type="462c0819:PsiDirectoryNode" />
+              <item name="server" type="462c0819:PsiDirectoryNode" />
+            </path>
           </expand>
           <select />
         </subPane>
@@ -50,6 +85,14 @@
       <pane id="Scope" />
     </panes>
   </component>
+  <component name="PropertiesComponent">
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/../../../to_repo" />
+  </component>
+  <component name="RecentsManager">
+    <key name="CopyFile.RECENT_KEYS">
+      <recent name="$PROJECT_DIR$/../../../to_repo" />
+    </key>
+  </component>
   <component name="RunDashboard">
     <option name="ruleStates">
       <list>
@@ -101,26 +144,48 @@
     <servers />
   </component>
   <component name="ToolWindowManager">
-    <frame x="0" y="25" width="1680" height="1025" extended-state="6" />
+    <frame x="0" y="25" width="1680" height="1025" extended-state="7" />
+    <editor active="true" />
     <layout>
-      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.24984913" />
+      <window_info content_ui="combo" id="Project" order="0" visible="true" weight="0.24984913" />
       <window_info anchor="bottom" id="TODO" order="6" />
-      <window_info anchor="bottom" id="Event Log" side_tool="true" />
-      <window_info anchor="bottom" id="Run" order="2" weight="0.32997763" />
-      <window_info anchor="bottom" id="Version Control" show_stripe_button="false" />
-      <window_info anchor="bottom" id="Python Console" />
+      <window_info anchor="bottom" id="Event Log" order="7" side_tool="true" />
+      <window_info active="true" anchor="bottom" id="Run" order="2" visible="true" weight="0.32997763" />
+      <window_info anchor="bottom" id="Version Control" order="7" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Python Console" order="7" />
       <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
-      <window_info anchor="bottom" id="Terminal" />
+      <window_info anchor="bottom" id="Terminal" order="7" weight="0.32997763" />
       <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
-      <window_info id="Favorites" side_tool="true" />
-      <window_info anchor="bottom" id="Find" order="1" />
-      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
-      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
+      <window_info id="Favorites" order="2" side_tool="true" />
       <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.24984913" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
       <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
+      <window_info anchor="bottom" id="TODO" order="6" />
       <window_info anchor="bottom" id="Message" order="0" />
+      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
       <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
+      <window_info anchor="bottom" id="Find" order="1" />
     </layout>
+    <layout-to-restore>
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="2" weight="0.25" />
+      <window_info anchor="bottom" id="Run" order="2" visible="true" weight="0.32997763" />
+      <window_info anchor="bottom" id="Cvs" order="4" weight="0.25" />
+      <window_info active="true" content_ui="combo" id="Project" order="0" visible="true" weight="0.24984913" />
+      <window_info id="Structure" order="1" side_tool="true" weight="0.25" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="0" type="SLIDING" weight="0.4" />
+      <window_info anchor="right" id="Ant Build" order="1" weight="0.25" />
+      <window_info anchor="bottom" id="TODO" order="6" />
+      <window_info anchor="bottom" id="Find" order="1" />
+      <window_info anchor="bottom" id="Python Console" order="7" />
+      <window_info anchor="bottom" id="Debug" order="3" weight="0.4" />
+      <window_info anchor="bottom" id="Terminal" order="8" weight="0.32997763" />
+      <window_info anchor="bottom" id="Event Log" order="9" side_tool="true" />
+      <window_info anchor="bottom" id="Inspection" order="5" weight="0.4" />
+      <window_info anchor="bottom" id="Version Control" order="10" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Message" order="0" />
+      <window_info id="Favorites" order="2" side_tool="true" />
+    </layout-to-restore>
   </component>
   <component name="VcsContentAnnotationSettings">
     <option name="myLimit" value="2678400000" />
@@ -128,7 +193,7 @@
   <component name="editorHistoryManager">
     <entry file="file://$PROJECT_DIR$/server/__main__.py">
       <provider selected="true" editor-type-id="text-editor">
-        <state relative-caret-position="120">
+        <state relative-caret-position="225">
           <caret line="29" selection-start-line="29" selection-end-line="29" />
           <folding>
             <element signature="e#0#35#0" expanded="true" />
@@ -136,5 +201,38 @@
         </state>
       </provider>
     </entry>
+    <entry file="file://$PROJECT_DIR$/server/__main__.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="-203">
+          <caret line="29" selection-start-line="29" selection-end-line="29" />
+          <folding>
+            <element signature="e#0#35#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/../../../to_repo/__main__.py">
+      <provider selected="true" editor-type-id="text-editor" />
+    </entry>
+    <entry file="file://$PROJECT_DIR$/server/__main__.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="525">
+          <caret line="35" column="97" selection-start-line="35" selection-start-column="97" selection-end-line="35" selection-end-column="97" />
+          <folding>
+            <element signature="e#0#35#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/client/__main__.py">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="210">
+          <caret line="26" column="97" selection-start-line="26" selection-start-column="97" selection-end-line="26" selection-end-column="97" />
+          <folding>
+            <element signature="e#0#35#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
   </component>
 </project>
\ No newline at end of file
diff --git a/Messanger/client/__main__.py b/Messanger/client/__main__.py
index 1ba45ed..a395735 100644
--- a/Messanger/client/__main__.py
+++ b/Messanger/client/__main__.py
@@ -4,21 +4,81 @@
 import logging
 import jim
 import settings
+import dis
+
+class ClientVerifier(type):
+
+    def __init__(self, clsname, bases, clsdict):
+        self.verify_class(clsname, clsdict)
+        type.__init__(self, clsname, bases, clsdict)
+
+    def verify_class(self, clsname, clsdict):
+
+        socket_argval = None
+        for key, value in clsdict.items():
+            assert not isinstance(value, socket.socket), 'Creating socket in class level is forbidden'
+
+            instructions_list = dis.get_instructions(value)
+            for instruction in instructions_list:
+                if instruction.argval == 'socket' and instruction.opname == 'LOAD_GLOBAL':
+                    while instruction.opname != 'STORE_ATTR':
+                        instruction = next(instructions_list)
+                        if instruction.opname == 'LOAD_ATTR' and instruction.arg == 2:
+                            assert instruction.argval == 'SOCK_STREAM', 'Only SOCK_STREAM sockets is available'
+                    socket_argval = instruction.argval
+
+        if socket_argval:
+            for key, value in clsdict.items():
+                forbidden_procs = ['listen', 'accept']
+                instructions_list = dis.get_instructions(value)
+                for instruction in instructions_list:
+                    if instruction.argval == socket_argval:
+                        next_instruction = next(instructions_list)
+                        assert not (next_instruction.argval in forbidden_procs and
+                                    next_instruction.opname == 'LOAD_ATTR'), \
+                            f"{clsname} have forbidden method {next_instruction.argval}"
+
+
+class Client(metaclass=ClientVerifier):
+    def __init__(self, host, port):
+        self.host = host
+        self.port = port
+        self.sock = None
+
+    def make_connection(self):
+        self.sock = socket.socket()
+        self.sock.connect((self.host, self.port))
+        logger.info(f'Client started with {self.host}:{self.port}')
+        print(f'Client started with {self.host}:{self.port}')
+
+    def get_presence_msg(self, action, data):
+        time = datetime.datetime.now()
+        msg = {
+            "action": action,
+            "time": time.isoformat(),
+            "user": {
+                    "account_name":  "anonim",
+                    "status":      "Yep, I am here!"
+            },
+            "data": data
+        }
+
+        return jim.pack(msg)
+
+    def send_request(self):
+        while True:
+            action = input('Enter action to send:')
+            data = input('Enter data to send:')
 
+            msg = self.get_presence_msg(action, data)
+            self.sock.sendall(msg)
 
-def get_presence_msg(action, data):
-    time = datetime.datetime.now()
-    msg = {
-        "action": action,
-        "time": time.isoformat(),
-        "user": {
-                "account_name":  "anonim",
-                "status":      "Yep, I am here!"
-        },
-        "data": data
-    }
-
-    return jim.pack(msg)
+    def recv_response(self):
+        while True:
+            response = self.sock.recv(settings.BUFFERSIZE)
+            response = jim.unpack(response)
+            logger.info(f'Got next response from server: {response}')
+            print(f'Got next response from server: {response}')
 
 
 host = getattr(settings, 'HOST', '127.0.0.1')
@@ -47,24 +107,14 @@ def get_presence_msg(action, data):
 logger.addHandler(handler)
 
 try:
-    sock = socket.socket()
-    sock.connect((host, port))
-    logger.info(f'Client started with {host}:{port}')
-    print(f'Client started with {host}:{port}')
 
-    if args.mode == 'w':
-        while True:
-            action = input('Enter action to send:')
-            data = input('Enter data to send:')
+    clientObj = Client(host, port)
+    clientObj.make_connection()
 
-            msg = get_presence_msg(action, data)
-            sock.sendall(msg)
+    if args.mode == 'w':
+        clientObj.send_request()
     else:
-        while True:
-            response = sock.recv(settings.BUFFERSIZE)
-            response = jim.unpack(response)
-            logger.info(f'Got next response from server: {response}')
-            print(f'Got next response from server: {response}')
+        clientObj.recv_response()
 
 except KeyboardInterrupt:
     logger.info('Client  closed')
diff --git a/Messanger/server/__main__.py b/Messanger/server/__main__.py
index cb6fbca..7898538 100644
--- a/Messanger/server/__main__.py
+++ b/Messanger/server/__main__.py
@@ -6,6 +6,7 @@
 import threading
 import jim
 import settings
+import dis
 from routes import resolve, get_server_routes
 from protocol import (
     validate_request, make_response,
@@ -14,66 +15,83 @@
 
 from handlers import handle_request
 
+class ServerVerifier(type):
 
-def get_response_msg():
-    msg = {
-        "response": 200,
-        "alert": "Необязательное сообщение/уведомление"
-    }
-    return jim.pack(msg)
+    def __init__(self, clsname, bases, clsdict):
+        self.verify_class(clsname, clsdict)
+        type.__init__(self, clsname, bases, clsdict)
 
+    def verify_class(self, clsname, clsdict):
 
-def read_client_data(client, requests, buffersize):
-    b_request = client.recv(buffersize)
-    requests.append(b_request)
+        socket_argval = None
+        for key, value in clsdict.items():
+            assert not isinstance(value, socket.socket), 'Creating socket in class level is forbidden'
 
+            instructions_list = dis.get_instructions(value)
+            for instruction in instructions_list:
+                if instruction.argval == 'socket' and instruction.opname == 'LOAD_GLOBAL':
+                    while instruction.opname != 'STORE_ATTR':
+                        instruction = next(instructions_list)
+                        if instruction.opname == 'LOAD_ATTR' and instruction.arg == 2:
+                            assert instruction.argval == 'SOCK_STREAM', 'Only SOCK_STREAM sockets is available'
+                    socket_argval = instruction.argval
 
-def write_client_data(client, response):
-    client.send(response)
+        if socket_argval:
+            for key, value in clsdict.items():
+                forbidden_procs = ['connect']
+                instructions_list = dis.get_instructions(value)
+                for instruction in instructions_list:
+                    if instruction.argval == socket_argval:
+                        next_instruction = next(instructions_list)
+                        assert not (next_instruction.argval in forbidden_procs and
+                                    next_instruction.opname == 'LOAD_ATTR'), \
+                            f"{clsname} has forbidden method {next_instruction.argval}"
 
 
-host = getattr(settings, 'HOST', '127.0.0.1')
-port = getattr(settings, 'PORT', 7777)
+class PortDescriptor:
 
-parser = ArgumentParser()
-parser.add_argument('-a', '--addr', type=str, help='Sets ip address')
-parser.add_argument('-p', '--port', type=int, help='Sets port')
+    def __init__(self):
+        self._value = 7777
 
-args = parser.parse_args()
+    def __get__(self, instance, instance_type):
+        return self._value
 
-if args.addr:
-    host = args.addr
-if args.port:
-    port = args.port
+    def __set__(self, instance, value):
+        if type(value) is not int:
+            raise TypeError('Value must be integer')
+        if not value >= 0:
+            raise ValueError('Port number must be => 0')
+        self._value = value
 
-handler = logging.FileHandler('main.log', encoding=settings.ENCODING)
-error_handler = logging.FileHandler('error.log', encoding=settings.ENCODING)
 
-logging.basicConfig(
-    level=logging.DEBUG,
-    format='%(asctime)s - %(levelname)s - %(message)s',
-    handlers=[
-        handler,
-        error_handler,
-        logging.StreamHandler(),
-    ]
-)
+class Server(metaclass=ServerVerifier):
+    def __init__(self, host, port):
+        self.host = host
+        self.port = PortDescriptor()
+        self.port = port
+        self.sock = None
 
+    def make_listen(self):
+        self.sock = socket.socket()
+        self.sock.bind((self.host, self.port))
+        self.sock.settimeout(0)
+        self.sock.listen(5)
+        logging.info(f'Server started with {self.host}:{self.port}')
 
-def main():
+    def read_client_data(self, client, requests, buffersize):
+        b_request = client.recv(buffersize)
+        requests.append(b_request)
 
-    requests = []
-    connections = []
+    def write_client_data(self, client, response):
+        client.send(response)
+
+    def run_event_loop(self):
+        requests = []
+        connections = []
 
-    try:
-        sock = socket.socket()
-        sock.bind((host, port))
-        sock.settimeout(0)
-        sock.listen(5)
-        logging.info(f'Server started with {host}:{port}')
         while True:
             try:
-                client, address = sock.accept()
+                client, address = self.sock.accept()
                 logging.info(f'Client detected {address}')
                 connections.append(client)
             except Exception:
@@ -86,7 +104,7 @@ def main():
 
                 for r_client in rlist:
                     thread = threading.Thread(
-                        target=read_client_data,
+                        target=self.read_client_data,
                         args=(r_client, requests, settings.BUFFERSIZE)
                     )
                     thread.start()
@@ -97,11 +115,47 @@ def main():
 
                     for w_client in wlist:
                         thread = threading.Thread(
-                            target=write_client_data,
+                            target=self.write_client_data,
                             args=(w_client, b_response)
                         )
                         thread.start()
 
+
+
+host = getattr(settings, 'HOST', '127.0.0.1')
+port = getattr(settings, 'PORT', 7777)
+
+parser = ArgumentParser()
+parser.add_argument('-a', '--addr', type=str, help='Sets ip address')
+parser.add_argument('-p', '--port', type=int, help='Sets port')
+
+args = parser.parse_args()
+
+if args.addr:
+    host = args.addr
+if args.port:
+    port = args.port
+
+handler = logging.FileHandler('main.log', encoding=settings.ENCODING)
+error_handler = logging.FileHandler('error.log', encoding=settings.ENCODING)
+
+logging.basicConfig(
+    level=logging.DEBUG,
+    format='%(asctime)s - %(levelname)s - %(message)s',
+    handlers=[
+        handler,
+        error_handler,
+        logging.StreamHandler(),
+    ]
+)
+
+
+def main():
+
+    serverObj = Server(host, port)
+    try:
+        serverObj.make_listen()
+        serverObj.run_event_loop()
     except KeyboardInterrupt:
         logging.info('Server  closed')