HTTP asoslari

SOROV = (
    "GET /darslik/tarmoqlar HTTP/1.1\r\n"
    "Host: edu.softromeda.com\r\n"
    "User-Agent: qollanma/1.0\r\n"
    "Accept: text/html\r\n"
    "Accept-Language: uz\r\n"
    "\r\n"
)

print("so'rov uzunligi:", len(SOROV), "bayt")
print()

qatorlar = SOROV.split("\r\n")
usul, yol, versiya = qatorlar[0].split(" ")
print("so'rov qatori:")
print("  usul   :", usul)
print("  yo'l   :", yol)
print("  versiya:", versiya)

print()
print("sarlavhalar:")
for q in qatorlar[1:]:
    if q == "":
        break
    nom, qiymat = q.split(": ", 1)
    print(f"  {nom:<16} {qiymat}")

tana = SOROV.split("\r\n\r\n", 1)[1]
print()
print("tana uzunligi:", len(tana), "- GET da odatda tana bo'lmaydi")

import socket
import threading

PORT = 9600
SAHIFA = b"<h1>Salom, tarmoq!</h1>"

# Tinglash ASOSIY oqimda ochiladi - shunda mijoz ulanganda
# port allaqachon band bo'ladi (poyga holati bo'lmaydi)
tinglovchi = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
tinglovchi.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
tinglovchi.bind(("127.0.0.1", PORT))
tinglovchi.listen(1)


def server():
    ulanish, _ = tinglovchi.accept()
    sorov = ulanish.recv(4096).decode()
    birinchi = sorov.split("\r\n")[0]
    print("server so'rov qatorini oldi:", birinchi)

    javob = (
        "HTTP/1.1 200 OK\r\n"
        "Content-Type: text/html; charset=utf-8\r\n"
        f"Content-Length: {len(SAHIFA)}\r\n"
        "Connection: close\r\n"
        "\r\n"
    ).encode() + SAHIFA
    ulanish.sendall(javob)
    ulanish.close()


oqim = threading.Thread(target=server, daemon=True)
oqim.start()

mijoz = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
mijoz.settimeout(5)
mijoz.connect(("127.0.0.1", PORT))
mijoz.sendall(b"GET / HTTP/1.1\r\nHost: localhost\r\n\r\n")

javob = b""
while True:
    bolak = mijoz.recv(1024)
    if not bolak:
        break
    javob += bolak
mijoz.close()
oqim.join()
tinglovchi.close()

print()
print("--- xom javob")
for q in javob.decode().split("\r\n"):
    print("  " + (q if q else "(bo'sh qator - sarlavhalar tugadi)"))

XOM = (
    b"HTTP/1.1 301 Moved Permanently\r\n"
    b"Location: https://edu.softromeda.com/darslik/tarmoqlar\r\n"
    b"Content-Type: text/html; charset=utf-8\r\n"
    b"Content-Length: 28\r\n"
    b"\r\n"
    b"<a>Yangi manzilga o'ting</a>"
)


def javobni_och(xom):
    sarlavha_qismi, tana = xom.split(b"\r\n\r\n", 1)
    qatorlar = sarlavha_qismi.decode().split("\r\n")
    versiya, kod, izoh = qatorlar[0].split(" ", 2)
    sarlavhalar = {}
    for q in qatorlar[1:]:
        nom, qiymat = q.split(": ", 1)
        sarlavhalar[nom.lower()] = qiymat
    return int(kod), izoh, sarlavhalar, tana


kod, izoh, sarlavhalar, tana = javobni_och(XOM)

SINFLAR = {
    1: "ma'lumot", 2: "muvaffaqiyat", 3: "yo'naltirish",
    4: "mijoz xatosi", 5: "server xatosi",
}

print("holat kodi :", kod, izoh)
print("sinfi      :", SINFLAR[kod // 100])
print()
for nom, qiymat in sarlavhalar.items():
    print(f"  {nom:<16} {qiymat}")

print()
print("e'lon qilingan uzunlik:", sarlavhalar["content-length"])
print("haqiqiy tana uzunligi :", len(tana))
print("mos keldimi:", int(sarlavhalar["content-length"]) == len(tana))