From 0de4a40bc130d31a33b99adc1f53347442607315 Mon Sep 17 00:00:00 2001
From: Danila <danila.presnetsov@yandex.ru>
Date: Wed, 6 May 2026 14:56:02 +0300
Subject: [PATCH] TCP and UDP clients and servers

---
 .gitignore    |  3 +++
 README.md     |  0
 tcp_client.py |  8 ++++++++
 tcp_server.py | 31 +++++++++++++++++++++++++++++++
 udp_client.py | 10 ++++++++++
 udp_server.py | 15 +++++++++++++++
 6 files changed, 67 insertions(+)
 create mode 100644 .gitignore
 create mode 100644 README.md
 create mode 100644 tcp_client.py
 create mode 100644 tcp_server.py
 create mode 100644 udp_client.py
 create mode 100644 udp_server.py

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..de734a4
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+.venv/
+__pycache__/
+.env
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/tcp_client.py b/tcp_client.py
new file mode 100644
index 0000000..17c945e
--- /dev/null
+++ b/tcp_client.py
@@ -0,0 +1,8 @@
+import socket
+
+client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+client.connect(('127.0.0.1', 10000))
+client.sendall(b'EXIT') 
+data = client.recv(1024)
+print(f"Ответ от сервера: {data.decode()}")
+client.close()
diff --git a/tcp_server.py b/tcp_server.py
new file mode 100644
index 0000000..3ca873f
--- /dev/null
+++ b/tcp_server.py
@@ -0,0 +1,31 @@
+import socket
+
+server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+
+server.bind(("0.0.0.0", 10000))
+
+server.listen(1)
+print("TCP сервер запущен")
+
+while True:
+    
+    conn, addr = server.accept()
+    print(f"Подключение от {addr}")
+
+
+    data = conn.recv(1024)
+    
+    if not data:
+        conn.close()
+        break
+
+    conn.sendall(data.upper())
+
+    conn.close()
+
+    if data.upper() == b'EXIT':
+        print("Завершение работы сервера...")
+        break
+
+
+server.close()
diff --git a/udp_client.py b/udp_client.py
new file mode 100644
index 0000000..c83e5b8
--- /dev/null
+++ b/udp_client.py
@@ -0,0 +1,10 @@
+import socket
+
+client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+message = b'hello server'
+client.sendto(message, ('127.0.0.1', 15000))
+
+data, server_addr = client.recvfrom(1024)
+print(f"Ответ от сервера: {data.decode()}")
+
+client.close()
diff --git a/udp_server.py b/udp_server.py
new file mode 100644
index 0000000..3263a89
--- /dev/null
+++ b/udp_server.py
@@ -0,0 +1,15 @@
+import socket
+
+server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+server.bind(('0.0.0.0', 15000))
+print("UDP сервер запущен на порту 15000")
+
+while True:
+    data, addr = server.recvfrom(1024)
+    message = data.decode()
+    print(f"Получено от {addr}: {message}")
+    
+    modified_message = f"ECHO: {message.upper()} (len: {len(message)})"
+    
+
+    server.sendto(modified_message.encode(), addr)