feat(val-blog): add 2026-04-30 dream journey post

2026-08-13 17:00:22 +08:00
parent 691f96e8a6
commit 81978704fc
941 changed files with 195468 additions and 755 deletions
@@ -0,0 +1,78 @@
+import asyncio, json, urllib.request
+
+async def recv_one(reader):
+    b1 = await reader.readexactly(2)
+    opcode = b1[0] & 0x0F
+    masked_len = b1[1]
+    length = masked_len & 0x7F
+    if length == 126:
+        length = int.from_bytes(await reader.readexactly(2), 'big')
+    elif length == 127:
+        length = int.from_bytes(await reader.readexactly(8), 'big')
+    if masked_len & 0x80:
+        mask = await reader.readexactly(4)
+        payload = await reader.readexactly(length) if length else b''
+        payload = bytes(b ^ mask[i % 4] for i, b in enumerate(payload))
+    else:
+        payload = await reader.readexactly(length) if length else b''
+    return opcode, payload
+
+async def send_text(writer, obj):
+    text = json.dumps(obj).encode('utf-8')
+    mask = b'ABCD'
+    frame = bytearray([0x81])
+    n = len(text)
+    if n < 126:
+        frame.append(0x80 | n)
+    elif n < (1<<16):
+        frame.append(0x80 | 126); frame += n.to_bytes(2,'big')
+    else:
+        frame.append(0x80 | 127); frame += n.to_bytes(8,'big')
+    frame += mask
+    frame += bytes(b ^ mask[i % 4] for i, b in enumerate(text))
+    writer.write(frame)
+    await writer.drain()
+
+async def main():
+    ws = json.load(urllib.request.urlopen('http://127.0.0.1:9222/json/version'))['webSocketDebuggerUrl']
+    hostportpath = ws[len('ws://'):]
+    hostport, _, path = hostportpath.partition('/')
+    host, port = hostport.split(':'); port = int(port)
+    path = '/' + path
+    reader, writer = await asyncio.open_connection(host, port)
+    req = f'GET {path} HTTP/1.1\r\nHost: {host}:{port}\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==\r\nSec-WebSocket-Version: 13\r\n\r\n'
+    writer.write(req.encode()); await writer.drain(); await reader.readuntil(b'\r\n\r\n')
+
+    next_id = 1
+    async def call(method, params=None, sessionId=None):
+        nonlocal next_id
+        msg = {"id": next_id, "method": method}
+        if params is not None: msg['params'] = params
+        if sessionId is not None: msg['sessionId'] = sessionId
+        myid = next_id
+        next_id += 1
+        await send_text(writer, msg)
+        while True:
+            opcode, payload = await recv_one(reader)
+            if opcode != 1:
+                continue
+            data = json.loads(payload.decode('utf-8', errors='ignore'))
+            print('EV', json.dumps(data, ensure_ascii=False))
+            if data.get('id') == myid:
+                return data
+
+    r = await call('Target.createTarget', {'url': 'about:blank'})
+    tid = r['result']['targetId']
+    r = await call('Target.attachToTarget', {'targetId': tid, 'flatten': True})
+    sid = r['result']['sessionId']
+    await call('Page.enable', sessionId=sid)
+    await call('Runtime.enable', sessionId=sid)
+    await call('Page.navigate', {'url': 'https://example.com'}, sessionId=sid)
+    await asyncio.sleep(2)
+    r = await call('Runtime.evaluate', {'expression': 'document.title', 'returnByValue': True}, sessionId=sid)
+    print('TITLE', r)
+    r = await call('Runtime.evaluate', {'expression': 'document.body.innerText', 'returnByValue': True}, sessionId=sid)
+    print('BODY', r)
+    writer.close(); await writer.wait_closed()
+
+asyncio.run(main())