Streaming-Batch-Ergebnisse: CAPTCHA-Lösungen werden verarbeitet, sobald sie eintreffen

Ein Stapel von 500 CAPTCHA-Aufgaben wird ungleichmäßig abgeschlossen – einige werden in 8 Sekunden gelöst, andere brauchen 45. Das Warten auf den Abschluss jeder Aufgabe, bevor die Ergebnisse verarbeitet werden, verschwendet die Zeit zwischen der ersten und der letzten Lösung. Durch Streaming kann Ihre Downstream-Pipeline jedes Ergebnis in dem Moment nutzen, in dem es eintrifft.

Streaming vs. Batch-Then-Processing

Python: Asynchroner Generator für Streaming-Ergebnisse

Unter Verwendung von asyncio und aiohttp liefert jede Lösung sofort über einen asynchronen Generator Folgendes:

import asyncio
import aiohttp
import time

API_KEY = "YOUR_API_KEY"
SUBMIT_URL = "https://ocr.captchaai.com/in.php"
RESULT_URL = "https://ocr.captchaai.com/res.php"


async def submit_task(session, task_data):
    """Submit a single CAPTCHA task."""
    params = {
        "key": API_KEY,
        "method": task_data.get("method", "userrecaptcha"),
        "json": 1,
    }
    if params["method"] == "userrecaptcha":
        params["googlekey"] = task_data["sitekey"]
        params["pageurl"] = task_data["pageurl"]
    elif params["method"] == "turnstile":
        params["sitekey"] = task_data["sitekey"]
        params["pageurl"] = task_data["pageurl"]

    async with session.post(SUBMIT_URL, data=params) as resp:
        result = await resp.json(content_type=None)
        if result.get("status") != 1:
            return None, result.get("request", "unknown")
        return result["request"], None


async def poll_task(session, task_id, timeout=300):
    """Poll until solved or timeout."""
    start = time.monotonic()
    while time.monotonic() - start < timeout:
        await asyncio.sleep(5)
        params = {"key": API_KEY, "action": "get", "id": task_id, "json": 1}
        async with session.get(RESULT_URL, params=params) as resp:
            result = await resp.json(content_type=None)

        if result.get("request") == "CAPCHA_NOT_READY":
            continue
        if result.get("status") == 1:
            return result["request"], None
        return None, result.get("request", "unknown")

    return None, "TIMEOUT"


async def solve_one(session, index, task_data, semaphore):
    """Solve a single task within concurrency limits."""
    async with semaphore:
        start = time.monotonic()
        task_id, error = await submit_task(session, task_data)
        if error:
            return {"index": index, "status": "failed", "error": error, "time": 0}

        token, error = await poll_task(session, task_id)
        elapsed = time.monotonic() - start

        if token:
            return {"index": index, "status": "solved", "token": token, "time": round(elapsed, 1)}
        return {"index": index, "status": "failed", "error": error, "time": round(elapsed, 1)}


async def stream_results(tasks, max_concurrent=20):
    """
    Async generator that yields each result as it completes.
    Results arrive in completion order, not submission order.
    """
    semaphore = asyncio.Semaphore(max_concurrent)

    async with aiohttp.ClientSession() as session:
        pending = set()
        for i, task in enumerate(tasks):
            coro = solve_one(session, i, task, semaphore)
            pending.add(asyncio.ensure_future(coro))

        while pending:
            done, pending = await asyncio.wait(pending, return_when=asyncio.FIRST_COMPLETED)
            for future in done:
                yield future.result()


async def main():
    tasks = [
        {"sitekey": "SITE_KEY", "pageurl": f"https://example.com/page{i}"}
        for i in range(50)
    ]

    solved = 0
    failed = 0

    async for result in stream_results(tasks, max_concurrent=15):
        # Process each result immediately
        if result["status"] == "solved":
            solved += 1
            print(f"  [{solved + failed}/{len(tasks)}] Task {result['index']} SOLVED in {result['time']}s")

            # Use token immediately — don't wait for batch
            # await submit_form(result["token"])
            # await save_to_database(result)
        else:
            failed += 1
            print(f"  [{solved + failed}/{len(tasks)}] Task {result['index']} FAILED: {result['error']}")

    print(f"\nDone: {solved} solved, {failed} failed")


asyncio.run(main())

Abhängigkeiten installieren:

pip install aiohttp

JavaScript: EventEmitter-Streaming-Muster

Node.js verwendet einen ereignisgesteuerten Ansatz – jedes Ergebnis wird bei der Auflösung ausgegeben:

const { EventEmitter } = require("events");

const API_KEY = "YOUR_API_KEY";
const SUBMIT_URL = "https://ocr.captchaai.com/in.php";
const RESULT_URL = "https://ocr.captchaai.com/res.php";

class CaptchaStream extends EventEmitter {
  constructor(maxConcurrent = 15) {
    super();
    this.maxConcurrent = maxConcurrent;
    this.active = 0;
    this.queue = [];
    this.total = 0;
    this.completed = 0;
  }

  async submitAndPoll(index, taskData) {
    const params = new URLSearchParams({
      key: API_KEY,
      method: taskData.method || "userrecaptcha",
      googlekey: taskData.sitekey,
      pageurl: taskData.pageurl,
      json: "1",
    });

    const start = Date.now();
    const submitResp = await (await fetch(SUBMIT_URL, { method: "POST", body: params })).json();

    if (submitResp.status !== 1) {
      return { index, status: "failed", error: submitResp.request, time: 0 };
    }

    const taskId = submitResp.request;
    for (let i = 0; i < 60; i++) {
      await new Promise((r) => setTimeout(r, 5000));
      const url = `${RESULT_URL}?key=${API_KEY}&action=get&id=${taskId}&json=1`;
      const poll = await (await fetch(url)).json();

      if (poll.request === "CAPCHA_NOT_READY") continue;
      const elapsed = ((Date.now() - start) / 1000).toFixed(1);
      if (poll.status === 1) return { index, status: "solved", token: poll.request, time: elapsed };
      return { index, status: "failed", error: poll.request, time: elapsed };
    }
    return { index, status: "failed", error: "TIMEOUT", time: ((Date.now() - start) / 1000).toFixed(1) };
  }

  async processNext() {
    if (this.queue.length === 0 || this.active >= this.maxConcurrent) return;

    const { index, taskData } = this.queue.shift();
    this.active++;

    try {
      const result = await this.submitAndPoll(index, taskData);
      this.emit("result", result);
    } catch (err) {
      this.emit("result", { index, status: "failed", error: err.message });
    } finally {
      this.active--;
      this.completed++;

      if (this.completed === this.total) {
        this.emit("done");
      } else {
        this.processNext();
      }
    }
  }

  start(tasks) {
    this.total = tasks.length;
    this.queue = tasks.map((taskData, index) => ({ index, taskData }));

    // Launch initial batch
    const initial = Math.min(this.maxConcurrent, tasks.length);
    for (let i = 0; i < initial; i++) {
      this.processNext();
    }
    return this;
  }
}

// Usage
const tasks = Array.from({ length: 50 }, (_, i) => ({
  sitekey: "SITE_KEY",
  pageurl: `https://example.com/page${i}`,
}));

const stream = new CaptchaStream(15);
let solved = 0, failed = 0;

stream.on("result", (result) => {
  if (result.status === "solved") {
    solved++;
    console.log(`[${solved + failed}/${tasks.length}] Task ${result.index} SOLVED (${result.time}s)`);
    // Use token immediately
    // submitForm(result.token);
  } else {
    failed++;
    console.log(`[${solved + failed}/${tasks.length}] Task ${result.index} FAILED: ${result.error}`);
  }
});

stream.on("done", () => {
  console.log(`\nComplete: ${solved} solved, ${failed} failed`);
});

stream.start(tasks);

Wann sollte man Streaming vs. Collect-All verwenden?

Fehlerbehebung

Verwandte Leitfäden

• Batch-CAPTCHA-Lösung
• Backpressure für CAPTCHA-Lösungs-Queues
• API-Antwortformate und Fehlercodes