# Playwright

Playwright has first-class proxy support — pass credentials directly to `launch()` or `new_context()`, no extension hacks required.

## Python

```python
from playwright.sync_api import sync_playwright

with sync_playwright() as p:
    browser = p.chromium.launch(proxy={
        "server":   "http://gate.helodata.io:7777",
        "username": "helo_s1a2b3c4d5e-type-res-region-us",
        "password": "PASSWORD",
    })
    page = browser.new_page()
    page.goto("https://ipv4.icanhazip.com")
    print(page.content())
    browser.close()
```

For SOCKS5 use `"server": "socks5://gate.helodata.io:7777"` (DNS is resolved by the proxy automatically).

## Node.js

```js
import { chromium } from "playwright";

const browser = await chromium.launch({
  proxy: {
    server:   "http://gate.helodata.io:7777",
    username: "helo_s1a2b3c4d5e-type-res-region-us",
    password: "PASSWORD",
  },
});
const page = await browser.newPage();
await page.goto("https://ipv4.icanhazip.com");
console.log(await page.content());
await browser.close();
```

## Per-context proxy

Use a different proxy per browser context — handy for parallel sessions:

```python
ctx_us = browser.new_context(proxy={"server": "http://gate.helodata.io:7777",
                                    "username": "helo_s1a2b3c4d5e-type-res-region-us",
                                    "password": "PASSWORD"})
ctx_de = browser.new_context(proxy={"server": "http://gate.helodata.io:7777",
                                    "username": "helo_s1a2b3c4d5e-type-res-region-de",
                                    "password": "PASSWORD"})
```

The browser process is shared; contexts are isolated like separate browser profiles.

## ISP

```python
browser = p.chromium.launch(proxy={
    "server":   "http://198.51.100.42:8000",
    "username": "helo_s1a2b3c4d5e",
    "password": "PASSWORD",
})
```

## Rotating sessions in Playwright

Mint a new sub-user string per context, with a unique `session-XXX`:

```python
import random, string
def session_user(country="us"):
    sid = "".join(random.choices(string.ascii_lowercase + string.digits, k=8))
    return f"helo_s1a2b3c4d5e-type-res-region-{country}-session-{sid}-sesstime-10"

ctx = browser.new_context(proxy={
    "server": "http://gate.helodata.io:7777",
    "username": session_user(),
    "password": "PASSWORD",
})
```

## Verify

```python
ip = page.evaluate("fetch('https://ipv4.icanhazip.com').then(r => r.text())")
print(ip)
```

## Common pitfalls

* **No headless flag needed** for proxy auth — Playwright handles it natively in both head and headless modes.
* **WebRTC leak** — by default Playwright doesn't expose the local IP via WebRTC, but verify with `browserleaks.com/webrtc` if your target sniffs for it.
* **Bypass list** — use `proxy.bypass = "localhost,127.0.0.1"` to avoid proxying internal targets.


---

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