Gunicorn

FROM python:3.13-slim
RUN pip install --no-cache-dir gunicorn
COPY src/Servers/GunicornServer/app.py /app/app.py
WORKDIR /app
EXPOSE 8080
CMD ["gunicorn", "-b", "0.0.0.0:8080", "app:app"]

def app(environ, start_response):
    path = environ.get('PATH_INFO', '/')

    if path == '/cookie':
        cookie_str = environ.get('HTTP_COOKIE', '')
        lines = []
        for pair in cookie_str.split(';'):
            pair = pair.strip()
            eq = pair.find('=')
            if eq > 0:
                lines.append(f"{pair[:eq]}={pair[eq+1:]}")
        body = ('\n'.join(lines) + '\n').encode('utf-8') if lines else b''
        start_response('200 OK', [('Content-Type', 'text/plain')])
        return [body]

    if path == '/echo':
        lines = []
        for key, value in environ.items():
            if key.startswith('HTTP_'):
                header_name = key[5:].replace('_', '-').title()
                lines.append(f"{header_name}: {value}")
        if environ.get('CONTENT_TYPE'):
            lines.append(f"Content-Type: {environ['CONTENT_TYPE']}")
        if environ.get('CONTENT_LENGTH'):
            lines.append(f"Content-Length: {environ['CONTENT_LENGTH']}")
        body = ('\n'.join(lines) + '\n').encode('utf-8')
        start_response('200 OK', [('Content-Type', 'text/plain')])
        return [body]

    start_response('200 OK', [('Content-Type', 'text/plain')])
    if environ['REQUEST_METHOD'] == 'POST':
        try:
            length = int(environ.get('CONTENT_LENGTH', 0) or 0)
        except ValueError:
            length = 0
        body = environ['wsgi.input'].read(length) if length > 0 else b''
        return [body]
    return [b'OK']