mirror of
https://github.com/xtekky/gpt4free.git
synced 2024-12-26 12:41:56 +03:00
68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
from __future__ import annotations
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import time
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import hashlib
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import random
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from typing import AsyncGenerator, Optional, Dict, Any
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from ..typing import Messages
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from ..requests import StreamSession, raise_for_status
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from .base_provider import AsyncGeneratorProvider
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from ..errors import RateLimitError
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# Constants
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DOMAINS = [
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"https://s.aifree.site",
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"https://v.aifree.site/"
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]
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RATE_LIMIT_ERROR_MESSAGE = "当前地区当日额度已消耗完"
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class FreeGpt(AsyncGeneratorProvider):
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url: str = "https://freegptsnav.aifree.site"
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working: bool = True
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supports_message_history: bool = True
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supports_system_message: bool = True
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supports_gpt_35_turbo: bool = True
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@classmethod
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async def create_async_generator(
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cls,
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model: str,
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messages: Messages,
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proxy: Optional[str] = None,
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timeout: int = 120,
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**kwargs: Any
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) -> AsyncGenerator[str, None]:
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prompt = messages[-1]["content"]
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timestamp = int(time.time())
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data = cls._build_request_data(messages, prompt, timestamp)
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domain = random.choice(DOMAINS)
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async with StreamSession(
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impersonate="chrome",
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timeout=timeout,
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proxies={"all": proxy} if proxy else None
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) as session:
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async with session.post(f"{domain}/api/generate", json=data) as response:
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await raise_for_status(response)
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async for chunk in response.iter_content():
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chunk_decoded = chunk.decode(errors="ignore")
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if chunk_decoded == RATE_LIMIT_ERROR_MESSAGE:
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raise RateLimitError("Rate limit reached")
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yield chunk_decoded
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@staticmethod
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def _build_request_data(messages: Messages, prompt: str, timestamp: int, secret: str = "") -> Dict[str, Any]:
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return {
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"messages": messages,
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"time": timestamp,
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"pass": None,
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"sign": generate_signature(timestamp, prompt, secret)
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}
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def generate_signature(timestamp: int, message: str, secret: str = "") -> str:
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data = f"{timestamp}:{message}:{secret}"
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return hashlib.sha256(data.encode()).hexdigest()
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