WebSocket을 사용하여 양방향 스트리밍 시작하기

from bedrock_agentcore import BedrockAgentCoreApp

app = BedrockAgentCoreApp()

@app.websocket
async def websocket_handler(websocket, context):
    """Simple echo WebSocket handler."""
    await websocket.accept()

    try:
        data = await websocket.receive_json()
        # Echo back
        await websocket.send_json({"echo": data})
    except Exception as e:
        print(f"Error: {e}")
    finally:
        await websocket.close()

if __name__ == "__main__":
    app.run(log_level="info")

import asyncio
import websockets
import json

async def local_websocket():
    uri = "ws://localhost:8080/ws"

    try:
        async with websockets.connect(uri) as websocket:
            # Send a message
            await websocket.send(json.dumps({"inputText": "Hello WebSocket!"}))

            # Receive the echo response
            response = await websocket.recv()
            print(f"Received: {response}")
    except Exception as e:
        print(f"Connection failed: {e}")

if __name__ == "__main__":
    asyncio.run(local_websocket())

from bedrock_agentcore.runtime import AgentCoreRuntimeClient
import websockets
import asyncio
import json
import os

async def main():
    # Get runtime ARN from environment variable
    runtime_arn = os.getenv('AGENT_ARN')
    if not runtime_arn:
        raise ValueError("AGENT_ARN environment variable is required")

    # Initialize client
    client = AgentCoreRuntimeClient(region="us-west-2")

    # Generate WebSocket connection with authentication
    ws_url, headers = client.generate_ws_connection(
        runtime_arn=runtime_arn
    )

    try:
        async with websockets.connect(ws_url, additional_headers=headers) as ws:
            # Send message
            await ws.send(json.dumps({"inputText": "Hello!"}))

            # Receive response
            response = await ws.recv()
            print(f"Received: {response}")
    except websockets.exceptions.InvalidStatus as e:
        print(f"WebSocket handshake failed with status code: {e.response.status_code}")
        print(f"Response headers: {e.response.headers}")
        print(f"Response body: {e.response.body.decode()}")
    except Exception as e:
        print(f"Connection failed: {e}")

if __name__ == "__main__":
    asyncio.run(main())

from bedrock_agentcore.runtime import AgentCoreRuntimeClient
import websockets
import asyncio
import json
import os

async def main():
    runtime_arn = os.getenv('AGENT_ARN')
    if not runtime_arn:
        raise ValueError("AGENT_ARN environment variable is required")

    client = AgentCoreRuntimeClient(region="us-west-2")

    # Generate WebSocket pre-signed URL (with SigV4 via query parameters)
    # wss://...amazonaws.com/runtimes/.../ws?X-Amz-Algorithm=AWS4-HMAC-SHA256
    #   &X-Amz-Credential=...&X-Amz-Date=...&X-Amz-Expires=300
    #   &X-Amz-SignedHeaders=...&X-Amz-Signature=...
    sigv4_url = client.generate_presigned_url(
        runtime_arn=runtime_arn,
        expires=300  # 5 minutes
    )

    try:
        async with websockets.connect(sigv4_url) as ws:
            await ws.send(json.dumps({"inputText": "Hello!"}))
            response = await ws.recv()
            print(f"Received: {response}")
    except websockets.exceptions.InvalidStatus as e:
        print(f"WebSocket handshake failed with status code: {e.response.status_code}")
        print(f"Response headers: {e.response.headers}")
        print(f"Response body: {e.response.body.decode()}")
    except Exception as e:
        print(f"Connection failed: {e}")

if __name__ == "__main__":
    asyncio.run(main())

from bedrock_agentcore.runtime import AgentCoreRuntimeClient
import websockets
import asyncio
import json
import os

async def main():
    # Get runtime ARN from environment variable
    runtime_arn = os.getenv('AGENT_ARN')
    if not runtime_arn:
        raise ValueError("AGENT_ARN environment variable is required")

    # Get OAuth bearer token from environment variable
    bearer_token = os.getenv('BEARER_TOKEN')
    if not bearer_token:
        raise ValueError("BEARER_TOKEN environment variable required for OAuth")

    # Initialize client
    client = AgentCoreRuntimeClient(region="us-west-2")

    # Generate WebSocket connection with OAuth
    ws_url, headers = client.generate_ws_connection_oauth(
        runtime_arn=runtime_arn,
        bearer_token=bearer_token
    )

    try:
        async with websockets.connect(ws_url, additional_headers=headers) as ws:
            # Send message
            await ws.send(json.dumps({"inputText": "Hello!"}))

            # Receive response
            response = await ws.recv()
            print(f"Received: {response}")
    except websockets.exceptions.InvalidStatus as e:
        print(f"WebSocket handshake failed with status code: {e.response.status_code}")
        print(f"Response headers: {e.response.headers}")
        print(f"Response body: {e.response.body.decode()}")
    except Exception as e:
        print(f"Connection failed: {e}")

if __name__ == "__main__":
    asyncio.run(main())

<!DOCTYPE html>
<html>
<body>
    <button onclick="connect()">Connect</button>
    <div id="output"></div>

    <script>
        function connect() {
            const bearerToken = "your_oauth_token_here";
            const runtimeArn = "arn:aws:bedrock-agentcore:us-west-2:accountId:runtime/agent-xyz123";

            // Base64url encode token
            const base64url = btoa(bearerToken)
                .replace(/\+/g, '-')
                .replace(/\//g, '_')
                .replace(/=/g, '');

            const ws = new WebSocket(
                `wss://bedrock-agentcore.us-west-2.amazonaws.com/runtimes/${runtimeArn}/ws`,
                [`base64UrlBearerAuthorization.${base64url}`, "base64UrlBearerAuthorization"]
            );

            ws.onopen = () => ws.send(JSON.stringify({ inputText: "Hello!" }));
            ws.onmessage = (e) => document.getElementById("output").innerText = e.data;
        }
    </script>
</body>
</html>