流式传输

import requests
import json

question = "How would you build the tallest building ever?"

url = "https://www.openroute.cn/api/v1/chat/completions"
headers = {
  "Authorization": f"Bearer {API_KEY_REF}",
  "Content-Type": "application/json"
}

payload = {
  "model": "openai/gpt-4o",
  "messages": [{"role": "user", "content": question}],
  "stream": True
}

buffer = ""
with requests.post(url, headers=headers, json=payload, stream=True) as r:
  for chunk in r.iter_content(chunk_size=1024, decode_unicode=True):
    buffer += chunk
    while True:
      try:
        # Find the next complete SSE line
        line_end = buffer.find('\n')
        if line_end == -1:
          break

        line = buffer[:line_end].strip()
        buffer = buffer[line_end + 1:]

        if line.startswith('data: '):
          data = line[6:]
          if data == '[DONE]':
            break

          try:
            data_obj = json.loads(data)
            content = data_obj["choices"][0]["delta"].get("content")
            if content:
              print(content, end="", flush=True)
          except json.JSONDecodeError:
            pass
      except Exception:
        break

const question = 'How would you build the tallest building ever?';
const response = await fetch('https://www.openroute.cn/api/v1/chat/completions', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${API_KEY_REF}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    model: 'openai/gpt-4o',
    messages: [{ role: 'user', content: question }],
    stream: true,
  }),
});

const reader = response.body?.getReader();
if (!reader) {
  throw new Error('Response body is not readable');
}

const decoder = new TextDecoder();
let buffer = '';

try {
  while (true) {
    const { done, value } = await reader.read();
    if (done) break;

    // Append new chunk to buffer
    buffer += decoder.decode(value, { stream: true });

    // Process complete lines from buffer
    while (true) {
      const lineEnd = buffer.indexOf('\n');
      if (lineEnd === -1) break;

      const line = buffer.slice(0, lineEnd).trim();
      buffer = buffer.slice(lineEnd + 1);

      if (line.startsWith('data: ')) {
        const data = line.slice(6);
        if (data === '[DONE]') break;

        try {
          const parsed = JSON.parse(data);
          const content = parsed.choices[0].delta.content;
          if (content) {
            console.log(content);
          }
        } catch (e) {
          // Ignore invalid JSON
        }
      }
    }
  }
} finally {
  reader.cancel();
}

const question = 'How would you build the tallest building ever?';
const response = await fetch('https://www.openroute.cn/api/v1/chat/completions', {
  method: 'POST',
  headers: {
    Authorization: `Bearer ${API_KEY_REF}`,
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    model: 'openai/gpt-4o',
    messages: [{ role: 'user', content: question }],
    stream: true,
  }),
});

const reader = response.body?.getReader();
if (!reader) {
  throw new Error('Response body is not readable');
}

const decoder = new TextDecoder();
let buffer = '';

try {
  while (true) {
    const { done, value } = await reader.read();
    if (done) break;

    // Append new chunk to buffer
    buffer += decoder.decode(value, { stream: true });

    // Process complete lines from buffer
    while (true) {
      const lineEnd = buffer.indexOf('\n');
      if (lineEnd === -1) break;

      const line = buffer.slice(0, lineEnd).trim();
      buffer = buffer.slice(lineEnd + 1);

      if (line.startsWith('data: ')) {
        const data = line.slice(6);
        if (data === '[DONE]') break;

        try {
          const parsed = JSON.parse(data);
          const content = parsed.choices[0].delta.content;
          if (content) {
            console.log(content);
          }
        } catch (e) {
          // Ignore invalid JSON
        }
      }
    }
  }
} finally {
  reader.cancel();
}

import requests
from threading import Event, Thread

def stream_with_cancellation(prompt: str, cancel_event: Event):
    with requests.Session() as session:
        response = session.post(
            "https://www.openroute.cn/api/v1/chat/completions",
            headers={"Authorization": f"Bearer {API_KEY_REF}"},
            json={"model": "openai/gpt-4o", "messages": [{"role": "user", "content": prompt}], "stream": True},
            stream=True
        )

        try:
            for line in response.iter_lines():
                if cancel_event.is_set():
                    response.close()
                    return
                if line:
                    print(line.decode(), end="", flush=True)
        finally:
            response.close()

# Example usage:
cancel_event = Event()
stream_thread = Thread(target=lambda: stream_with_cancellation("Write a story", cancel_event))
stream_thread.start()

# To cancel the stream:
cancel_event.set()

const controller = new AbortController();

try {
  const response = await fetch(
    'https://www.openroute.cn/api/v1/chat/completions',
    {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${API_KEY_REF}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        model: 'openai/gpt-4o',
        messages: [{ role: 'user', content: 'Write a story' }],
        stream: true,
      }),
      signal: controller.signal,
    },
  );

  // Process the stream...
} catch (error) {
  if (error.name === 'AbortError') {
    console.log('Stream cancelled');
  } else {
    throw error;
  }
}

// To cancel the stream:
controller.abort();

const controller = new AbortController();

try {
  const response = await fetch(
    'https://www.openroute.cn/api/v1/chat/completions',
    {
      method: 'POST',
      headers: {
        Authorization: `Bearer ${API_KEY_REF}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        model: 'openai/gpt-4o',
        messages: [{ role: 'user', content: 'Write a story' }],
        stream: true,
      }),
      signal: controller.signal,
    },
  );

  // Process the stream...
} catch (error) {
  if (error.name === 'AbortError') {
    console.log('Stream cancelled');
  } else {
    throw error;
  }
}

// To cancel the stream:
controller.abort();

import requests
import json

async def stream_with_error_handling(prompt):
    response = requests.post(
        'https://www.openroute.cn/api/v1/chat/completions',
        headers={'Authorization': f'Bearer {API_KEY_REF}'},
        json={
            'model': 'openai/gpt-4o',
            'messages': [{'role': 'user', 'content': prompt}],
            'stream': True
        },
        stream=True
    )
    
    # Check initial HTTP status for pre-stream errors
    if response.status_code != 200:
        error_data = response.json()
        print(f"Error: {error_data['error']['message']}")
        return
    
    # Process stream and handle mid-stream errors
    for line in response.iter_lines():
        if line:
            line_text = line.decode('utf-8')
            if line_text.startswith('data: '):
                data = line_text[6:]
                if data == '[DONE]':
                    break
                
                try:
                    parsed = json.loads(data)
                    
                    # Check for mid-stream error
                    if 'error' in parsed:
                        print(f"Stream error: {parsed['error']['message']}")
                        # Check finish_reason if needed
                        if parsed.get('choices', [{}])[0].get('finish_reason') == 'error':
                            print("Stream terminated due to error")
                        break
                    
                    # Process normal content
                    content = parsed['choices'][0]['delta'].get('content')
                    if content:
                        print(content, end='', flush=True)
                        
                except json.JSONDecodeError:
                    pass

async function streamWithErrorHandling(prompt: string) {
  const response = await fetch(
    'https://www.openroute.cn/api/v1/chat/completions',
    {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${API_KEY_REF}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        model: 'openai/gpt-4o',
        messages: [{ role: 'user', content: prompt }],
        stream: true,
      }),
    }
  );

  // Check initial HTTP status for pre-stream errors
  if (!response.ok) {
    const error = await response.json();
    console.error(`Error: ${error.error.message}`);
    return;
  }

  const reader = response.body?.getReader();
  if (!reader) throw new Error('No response body');

  const decoder = new TextDecoder();
  let buffer = '';

  try {
    while (true) {
      const { done, value } = await reader.read();
      if (done) break;

      buffer += decoder.decode(value, { stream: true });

      while (true) {
        const lineEnd = buffer.indexOf('\n');
        if (lineEnd === -1) break;

        const line = buffer.slice(0, lineEnd).trim();
        buffer = buffer.slice(lineEnd + 1);

        if (line.startsWith('data: ')) {
          const data = line.slice(6);
          if (data === '[DONE]') return;

          try {
            const parsed = JSON.parse(data);
            
            // Check for mid-stream error
            if (parsed.error) {
              console.error(`Stream error: ${parsed.error.message}`);
              // Check finish_reason if needed
              if (parsed.choices?.[0]?.finish_reason === 'error') {
                console.log('Stream terminated due to error');
              }
              return;
            }

            // Process normal content
            const content = parsed.choices[0].delta.content;
            if (content) {
              console.log(content);
            }
          } catch (e) {
            // Ignore parsing errors
          }
        }
      }
    }
  } finally {
    reader.cancel();
  }
}

async function streamWithErrorHandling(prompt) {
  const response = await fetch(
    'https://www.openroute.cn/api/v1/chat/completions',
    {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${API_KEY_REF}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        model: 'openai/gpt-4o',
        messages: [{ role: 'user', content: prompt }],
        stream: true,
      }),
    }
  );

  // Check initial HTTP status for pre-stream errors
  if (!response.ok) {
    const error = await response.json();
    console.error(`Error: ${error.error.message}`);
    return;
  }

  const reader = response.body?.getReader();
  if (!reader) throw new Error('No response body');

  const decoder = new TextDecoder();
  let buffer = '';

  try {
    while (true) {
      const { done, value } = await reader.read();
      if (done) break;

      buffer += decoder.decode(value, { stream: true });

      while (true) {
        const lineEnd = buffer.indexOf('\n');
        if (lineEnd === -1) break;

        const line = buffer.slice(0, lineEnd).trim();
        buffer = buffer.slice(lineEnd + 1);

        if (line.startsWith('data: ')) {
          const data = line.slice(6);
          if (data === '[DONE]') return;

          try {
            const parsed = JSON.parse(data);
            
            // Check for mid-stream error
            if (parsed.error) {
              console.error(`Stream error: ${parsed.error.message}`);
              // Check finish_reason if needed
              if (parsed.choices?.[0]?.finish_reason === 'error') {
                console.log('Stream terminated due to error');
              }
              return;
            }

            // Process normal content
            const content = parsed.choices[0].delta.content;
            if (content) {
              console.log(content);
            }
          } catch (e) {
            // Ignore parsing errors
          }
        }
      }
    }
  } finally {
    reader.cancel();
  }
}