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import os
import json
import uuid
from datetime import datetime
from flask import Flask, request, Response, jsonify
import socketio
import requests
app = Flask(__name__)
# 从环境变量中获取API密钥
API_KEY = os.environ.get('PPLX_KEY')
# 代理设置
proxy_url = os.environ.get('PROXY_URL')
# 设置代理
if proxy_url:
proxies = {
'http': proxy_url,
'https': proxy_url
}
transport = requests.Session()
transport.proxies.update(proxies)
else:
transport = None
sio = socketio.Client(http_session=transport)
# 连接选项
connect_opts = {
'transports': ['websocket'],
}
# 其他选项
sio_opts = {
'auth': {
'jwt': 'anonymous-ask-user',
},
'extraHeaders': {
'Cookie': os.environ.get('PPLX_COOKIE'),
'User-Agent': os.environ.get('USER_AGENT'),
'Accept': '*/*',
'priority': 'u=1, i',
'Referer': 'https://www.perplexity.ai/',
}
}
def log_request(req, status):
timestamp = datetime.now().isoformat()
ip = req.remote_addr
route = req.path
print(f"{timestamp} - {ip} - {route} - {status}")
def validate_api_key():
api_key = request.headers.get('x-api-key')
if api_key != API_KEY:
log_request(request, 401)
return jsonify({"error": "Invalid API key"}), 401
return None
@app.route('/')
def root():
log_request(request, 200)
return jsonify({
"message": "Welcome to the Perplexity AI Proxy API",
"endpoints": {
"/ai/v1/messages": {
"method": "POST",
"description": "Send a message to the AI",
"headers": {
"x-api-key": "Your API key (required)",
"Content-Type": "application/json"
},
"body": {
"messages": "Array of message objects",
"stream": "Boolean (true for streaming response)",
}
}
}
})
@app.route('/ai/v1/messages', methods=['POST'])
def messages():
auth_error = validate_api_key()
if auth_error:
return auth_error
try:
json_body = request.json
if not json_body.get('stream', False):
log_request(request, 200)
return jsonify({
"id": str(uuid.uuid4()),
"content": [
{"text": "Please turn on streaming."},
{"id": "string", "name": "string", "input": {}}
],
"model": "string",
"stop_reason": "end_turn",
"stop_sequence": "string",
"usage": {"input_tokens": 0, "output_tokens": 0}
})
def generate():
previous_messages = "\n\n".join([msg['content'] for msg in json_body['messages']])
msg_id = str(uuid.uuid4())
yield create_event("message_start", {
"type": "message_start",
"message": {
"id": msg_id,
"type": "message",
"role": "assistant",
"content": [],
"model": "claude-3-opus-20240229",
"stop_reason": None,
"stop_sequence": None,
"usage": {"input_tokens": 8, "output_tokens": 1},
},
})
yield create_event("content_block_start", {"type": "content_block_start", "index": 0, "content_block": {"type": "text", "text": ""}})
yield create_event("ping", {"type": "ping"})
@sio.on('connect')
def on_connect():
sio.emit('perplexity_ask', previous_messages, {
"version": "2.9",
"source": "default",
"attachments": [],
"language": "en-GB",
"timezone": "Europe/London",
"search_focus": "writing",
"frontend_uuid": str(uuid.uuid4()),
"mode": "concise",
"is_related_query": False,
"is_default_related_query": False,
"visitor_id": str(uuid.uuid4()),
"frontend_context_uuid": str(uuid.uuid4()),
"prompt_source": "user",
"query_source": "home"
})
@sio.on('query_progress')
def on_query_progress(data):
if 'text' in data:
text = json.loads(data['text'])
chunk = text['chunks'][-1] if text['chunks'] else None
if chunk:
yield create_event("content_block_delta", {
"type": "content_block_delta",
"index": 0,
"delta": {"type": "text_delta", "text": chunk},
})
@sio.on('disconnect')
def on_disconnect():
print(" > [Disconnected]")
@sio.on('error')
def on_error(error):
print(f"Socket error: {error}")
yield create_event("content_block_delta", {
"type": "content_block_delta",
"index": 0,
"delta": {"type": "text_delta", "text": "Error occurred while fetching output 输出时出现错误\nPlease refer to the log for more information 请查看日志以获取更多信息"},
})
yield create_event("content_block_stop", {"type": "content_block_stop", "index": 0})
yield create_event("message_delta", {
"type": "message_delta",
"delta": {"stop_reason": "end_turn", "stop_sequence": None},
"usage": {"output_tokens": 12},
})
yield create_event("message_stop", {"type": "message_stop"})
log_request(request, 500)
sio.connect('wss://www.perplexity.ai/', **connect_opts, headers=sio_opts['extraHeaders'])
sio.wait()
sio.disconnect()
yield create_event("content_block_stop", {"type": "content_block_stop", "index": 0})
yield create_event("message_delta", {
"type": "message_delta",
"delta": {"stop_reason": "end_turn", "stop_sequence": None},
"usage": {"output_tokens": 12},
})
yield create_event("message_stop", {"type": "message_stop"})
log_request(request, 200)
return Response(generate(), content_type='text/event-stream')
except Exception as e:
print(f"Request error: {str(e)}")
log_request(request, 400)
return jsonify({"error": str(e)}), 400
@app.errorhandler(404)
def not_found(error):
log_request(request, 404)
return "Not Found", 404
@app.errorhandler(500)
def server_error(error):
print(f"Server error: {str(error)}")
log_request(request, 500)
return "Something broke!", 500
def create_event(event, data):
if isinstance(data, dict):
data = json.dumps(data)
return f"event: {event}\ndata: {data}\n\n"
if __name__ == '__main__':
port = int(os.environ.get('PORT', 8081))
print(f"Perplexity proxy listening on port {port}")
if not API_KEY:
print("Warning: PPLX_KEY environment variable is not set. API key validation will fail.")
app.run(host='0.0.0.0', port=port)
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