HTTP probe previously tested forward-proxy GET only, so extraction
returned "alive" proxies that cannot tunnel HTTPS (CONNECT 400/EOF).
All three protocol probes now require: handshake -> CONNECT target:443
-> real TLS handshake with cert verify -> tunneled HTTPS HEAD reply.
Extraction accepts ?host= to probe the consumer's real target site
(e.g. vivid2api sends host=chatgpt.com); probe timeout 3s->6s and
batches 4->8 since the usable rate against strict checks is ~7%.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
chiyiandDevin
5a884cab97