8ab5c2b9e265dbff — PerplexityServer-observed TCP/TLS/H2/HTTP layers, joined per client. See results for the application-layer / self-reported view.
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Showing all clients. Show only AI agents
TLS/H2/TCP fingerprint per client, with your own browser (the request that loaded this page) pinned at top for reference.
| User-Agent | Reqs | Conns | JA4 | TLS | Cipher | ALPN | GREASE | ECH | H2 FP | RTT | Proxy hdrs |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Your browser (viewing this page) | - | - | t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 | TLS 1.3 | TLS_AES_128_GCM_SHA256 | h2 | false | false | 2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p | 34.4ms | - |
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36 | 11 | 1 | t13d1518h2_8daaf6152771_e2d80978ab2e | TLS 1.3 | TLS_AES_128_GCM_SHA256 | h2 | true | true | 1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | 34.3ms | - |
| Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) | 5 | 5 | t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 | TLS 1.3 | TLS_AES_128_GCM_SHA256 | h2 | false | false | 2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p | 30.0ms | - |
Hover a cell for the raw outcome. FAIL means the probe was reached but the capability wasn't demonstrated (e.g. no conditional revalidation sent); "-" means the probe was never reached.
| User-Agent | img_avif | img_jpeg | img_png | img_webp |
|---|---|---|---|---|
| Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/152.0.0.0 Safari/537.36 | PASS | PASS | PASS | PASS |
| Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com) | - | - | - | - |
11 request(s)
| Conn | JA4 | JA3 | JA3 hash | SNI | ALPN offered | ALPN negotiated | TLS negotiated | Highest offered | Cipher negotiated | GREASE | ECH | Cipher suites offered | Extensions in order | Supported groups | Signature algorithms |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| #1 | t13d1518h2_8daaf6152771_e2d80978ab2e | 771,4865-4866-4867-49195-49199-49196-49200-52393-52392-49171-49172-156-157-47-53,27-65037-43-35-18-51-5-0-11-17613-13-51764-23-16-45-65281-10-41,4588-29-23-24,0 | 12b713453c612eb667d661fe350008fe | ai-tester.paulcalvano.com | h2, http/1.1 | h2 | TLS 1.3 | TLS 13 | TLS_AES_128_GCM_SHA256 | true | true | GREASE(0x0a0a), 0x1301 TLS_AES_128_GCM_SHA256, 0x1302 TLS_AES_256_GCM_SHA384, 0x1303 TLS_CHACHA20_POLY1305_SHA256, 0xc02b ECDHE_ECDSA_AES_128_GCM_SHA256, 0xc02f ECDHE_RSA_AES_128_GCM_SHA256, 0xc02c ECDHE_ECDSA_AES_256_GCM_SHA384, 0xc030 ECDHE_RSA_AES_256_GCM_SHA384, 0xcca9 ECDHE_ECDSA_CHACHA20_POLY1305, 0xcca8 ECDHE_RSA_CHACHA20_POLY1305, 0xc013 ECDHE_RSA_AES_128_CBC_SHA, 0xc014 ECDHE_RSA_AES_256_CBC_SHA, 0x009c RSA_AES_128_GCM_SHA256, 0x009d RSA_AES_256_GCM_SHA384, 0x002f RSA_AES_128_CBC_SHA, 0x0035 RSA_AES_256_CBC_SHA | GREASE(0x0a0a), 0x001b compress_certificate, 0xfe0d encrypted_client_hello, 0x002b supported_versions, 0x0023 session_ticket, 0x0012 signed_cert_timestamp, 0x0033 key_share, 0x0005 status_request, 0x0000 server_name, 0x000b ec_point_formats, 0x44cd, 0x000d signature_algorithms, 0xca34, 0x0017 extended_master_secret, 0x0010 alpn, 0x002d psk_key_exchange_modes, 0xff01 renegotiation_info, 0x000a supported_groups, GREASE(0x7a7a), 0x0029 pre_shared_key | GREASE(0x5a5a), 0x11ec X25519MLKEM768, 0x001d x25519, 0x0017 secp256r1, 0x0018 secp384r1 | GREASE(0x0a0a), 0x0904, 0x0905, 0x0906, 0x0403 ecdsa_secp256r1_sha256, 0x0804 rsa_pss_rsae_sha256, 0x0401 rsa_pkcs1_sha256, 0x0503 ecdsa_secp384r1_sha384, 0x0805 rsa_pss_rsae_sha384, 0x0501 rsa_pkcs1_sha384, 0x0806 rsa_pss_rsae_sha512, 0x0601 rsa_pkcs1_sha512 |
| Conn | Fingerprint | Pseudo-header order | Header order | SETTINGS | Window update | Priority frames | First frame types |
|---|---|---|---|---|---|---|---|
| #1 | 1:65536;2:0;4:6291456;6:262144|15663105|1:1:0:256|m,a,s,p | :method,:authority,:scheme,:path | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | HEADER_TABLE_SIZE(1)=65536, ENABLE_PUSH(2)=0, INITIAL_WINDOW_SIZE(4)=6291456, MAX_HEADER_LIST_SIZE(6)=262144 | 15663105 | 1:1:0:256 | SETTINGS, WINDOW_UPDATE, HEADERS |
| Conn | RTT | RTT var | Snd MSS | Rcv MSS | Adv MSS | Cwnd | Rcv space | Retransmits | Total retrans | Lost |
|---|---|---|---|---|---|---|---|---|---|---|
| #1 | 34.3ms | 2.1ms | 1408 | 1408 | 1408 | 10 | 14080 | 0 | 0 | 0 |
TTL, initial window and MSS come from the raw SYN packet -- the one layer a proxy fleet can't easily disguise, since it describes the kernel that opened the socket. Best-effort: requires a capture covering this connection's timestamp.
| Conn | TTL | Window size | MSS | Window scale | SACK permitted | Fingerprint | Pcap file |
|---|---|---|---|---|---|---|---|
| #1 | 60 | 65535 | 1460 | 6 | true | 60:65535:1460:6 | syn-20260914-115224.pcap |
Download raw capture: syn-20260914-115224.pcap
No self-report from this client. If it couldn't call /report itself, you can file one manually on its behalf.
| Probe | What it tests | Outcomes observed | Count |
|---|---|---|---|
img_avif | Image format: AVIF image -- tests whether the fetcher can decode it. | fetched | 1 |
img_jpeg | Image format: JPEG control image; the embedded number proves the bytes were decoded. | fetched | 1 |
img_png | Image format: PNG control image; the embedded number proves the bytes were decoded. | fetched | 1 |
img_webp | Image format: WebP image -- tests whether the fetcher can decode it. | fetched | 1 |
Response headers are what the handler explicitly set. Content-Length and Date are added by Go's HTTP stack directly to the wire afterward and never pass back through the header map, so they don't appear here -- see Bytes for the actual byte count.
| Time | Method | Path | Proto | Status | Accept | Accept-Encoding | Served enc. | Bytes | Duration | Header order | Response headers |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 11:56:41.174 | GET | /t/8ab5c2b9e265dbff/ | HTTP/2.0 | 200 | text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 | gzip, deflate, br, zstd | 6906 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 11:56:41.245 | GET | /t/8ab5c2b9e265dbff/i/a451874c3ebe43f5 | HTTP/2.0 | 200 | image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8 | gzip, deflate, br, zstd | 736 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Length: 736; Content-Type: image/avif | |
| 11:56:41.253 | GET | /t/8ab5c2b9e265dbff/i/a696fbe386a4d11e | HTTP/2.0 | 200 | image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8 | gzip, deflate, br, zstd | 726 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Length: 726; Content-Type: image/webp | |
| 11:56:41.253 | GET | /t/8ab5c2b9e265dbff/i/e205b1fd538f0091 | HTTP/2.0 | 200 | image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8 | gzip, deflate, br, zstd | 1549 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Length: 1549; Content-Type: image/png | |
| 11:56:41.253 | GET | /t/8ab5c2b9e265dbff/i/d400753d8a4b27ca | HTTP/2.0 | 200 | image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8 | gzip, deflate, br, zstd | 6520 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Length: 6520; Content-Type: image/jpeg | |
| 11:57:37.642 | GET | /t/8ab5c2b9e265dbff/results | HTTP/2.0 | 200 | text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 | gzip, deflate, br, zstd | 3683 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 11:57:41.671 | GET | /t/8ab5c2b9e265dbff/results | HTTP/2.0 | 200 | text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 | gzip, deflate, br, zstd | 3683 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 11:57:43.740 | GET | /t/8ab5c2b9e265dbff/results | HTTP/2.0 | 200 | text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 | gzip, deflate, br, zstd | 3683 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 11:57:45.172 | GET | /t/8ab5c2b9e265dbff/results | HTTP/2.0 | 200 | text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 | gzip, deflate, br, zstd | 3683 | 0ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 11:58:35.686 | GET | /t/8ab5c2b9e265dbff/detail | HTTP/2.0 | 200 | text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 | gzip, deflate, br, zstd | 5302 | 12ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 11:58:38.272 | GET | /t/8ab5c2b9e265dbff/detail?all=1 | HTTP/2.0 | 200 | text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7 | gzip, deflate, br, zstd | 22496 | 243ms | :method, :authority, :scheme, :path, cache-control, sec-ch-ua, sec-ch-ua-mobile, sec-ch-ua-platform, upgrade-insecure-requests, user-agent, accept, sec-fetch-site, sec-fetch-mode, sec-fetch-user, sec-fetch-dest, referer, accept-encoding, accept-language, cookie, cookie, priority | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 |
| Time | Probe | Detail |
|---|---|---|
| 11:56:41.244 | img_avif:fetched | number=4022 bytes=736 accept="image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8" |
| 11:56:41.252 | img_webp:fetched | number=3022 bytes=726 accept="image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8" |
| 11:56:41.253 | img_jpeg:fetched | number=2022 bytes=6520 accept="image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8" |
| 11:56:41.253 | img_png:fetched | number=1022 bytes=1549 accept="image/avif,image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8" |
5 request(s)
| Conn | JA4 | JA3 | JA3 hash | SNI | ALPN offered | ALPN negotiated | TLS negotiated | Highest offered | Cipher negotiated | GREASE | ECH | Cipher suites offered | Extensions in order | Supported groups | Signature algorithms |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| #1 | t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 | 771,4866-4865-4867-49196-49195-52393-49200-49199-52392-255,43-10-45-13-23-0-51-5-16-11-35,29-23-24,0 | 447774a70dc04f0bab6bdb1b0c7bcf07 | ai-tester.paulcalvano.com | h2, http/1.1 | h2 | TLS 1.3 | TLS 13 | TLS_AES_128_GCM_SHA256 | false | false | 0x1302 TLS_AES_256_GCM_SHA384, 0x1301 TLS_AES_128_GCM_SHA256, 0x1303 TLS_CHACHA20_POLY1305_SHA256, 0xc02c ECDHE_ECDSA_AES_256_GCM_SHA384, 0xc02b ECDHE_ECDSA_AES_128_GCM_SHA256, 0xcca9 ECDHE_ECDSA_CHACHA20_POLY1305, 0xc030 ECDHE_RSA_AES_256_GCM_SHA384, 0xc02f ECDHE_RSA_AES_128_GCM_SHA256, 0xcca8 ECDHE_RSA_CHACHA20_POLY1305, 0x00ff | 0x002b supported_versions, 0x000a supported_groups, 0x002d psk_key_exchange_modes, 0x000d signature_algorithms, 0x0017 extended_master_secret, 0x0000 server_name, 0x0033 key_share, 0x0005 status_request, 0x0010 alpn, 0x000b ec_point_formats, 0x0023 session_ticket | 0x001d x25519, 0x0017 secp256r1, 0x0018 secp384r1 | 0x0503 ecdsa_secp384r1_sha384, 0x0403 ecdsa_secp256r1_sha256, 0x0807, 0x0806 rsa_pss_rsae_sha512, 0x0805 rsa_pss_rsae_sha384, 0x0804 rsa_pss_rsae_sha256, 0x0601 rsa_pkcs1_sha512, 0x0501 rsa_pkcs1_sha384, 0x0401 rsa_pkcs1_sha256 |
| #2 | t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 | 771,4866-4865-4867-49196-49195-52393-49200-49199-52392-255,35-11-45-10-13-23-43-16-0-51-5,29-23-24,0 | 86e8b43e4dda0ef63ac48bdc362bf32b | ai-tester.paulcalvano.com | h2, http/1.1 | h2 | TLS 1.3 | TLS 13 | TLS_AES_128_GCM_SHA256 | false | false | 0x1302 TLS_AES_256_GCM_SHA384, 0x1301 TLS_AES_128_GCM_SHA256, 0x1303 TLS_CHACHA20_POLY1305_SHA256, 0xc02c ECDHE_ECDSA_AES_256_GCM_SHA384, 0xc02b ECDHE_ECDSA_AES_128_GCM_SHA256, 0xcca9 ECDHE_ECDSA_CHACHA20_POLY1305, 0xc030 ECDHE_RSA_AES_256_GCM_SHA384, 0xc02f ECDHE_RSA_AES_128_GCM_SHA256, 0xcca8 ECDHE_RSA_CHACHA20_POLY1305, 0x00ff | 0x0023 session_ticket, 0x000b ec_point_formats, 0x002d psk_key_exchange_modes, 0x000a supported_groups, 0x000d signature_algorithms, 0x0017 extended_master_secret, 0x002b supported_versions, 0x0010 alpn, 0x0000 server_name, 0x0033 key_share, 0x0005 status_request | 0x001d x25519, 0x0017 secp256r1, 0x0018 secp384r1 | 0x0503 ecdsa_secp384r1_sha384, 0x0403 ecdsa_secp256r1_sha256, 0x0807, 0x0806 rsa_pss_rsae_sha512, 0x0805 rsa_pss_rsae_sha384, 0x0804 rsa_pss_rsae_sha256, 0x0601 rsa_pkcs1_sha512, 0x0501 rsa_pkcs1_sha384, 0x0401 rsa_pkcs1_sha256 |
| #3 | t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 | 771,4866-4865-4867-49196-49195-52393-49200-49199-52392-255,10-16-51-0-45-35-5-43-11-23-13,29-23-24,0 | d0e7aeb2de7de9b836851af2534db0ad | ai-tester.paulcalvano.com | h2, http/1.1 | h2 | TLS 1.3 | TLS 13 | TLS_AES_128_GCM_SHA256 | false | false | 0x1302 TLS_AES_256_GCM_SHA384, 0x1301 TLS_AES_128_GCM_SHA256, 0x1303 TLS_CHACHA20_POLY1305_SHA256, 0xc02c ECDHE_ECDSA_AES_256_GCM_SHA384, 0xc02b ECDHE_ECDSA_AES_128_GCM_SHA256, 0xcca9 ECDHE_ECDSA_CHACHA20_POLY1305, 0xc030 ECDHE_RSA_AES_256_GCM_SHA384, 0xc02f ECDHE_RSA_AES_128_GCM_SHA256, 0xcca8 ECDHE_RSA_CHACHA20_POLY1305, 0x00ff | 0x000a supported_groups, 0x0010 alpn, 0x0033 key_share, 0x0000 server_name, 0x002d psk_key_exchange_modes, 0x0023 session_ticket, 0x0005 status_request, 0x002b supported_versions, 0x000b ec_point_formats, 0x0017 extended_master_secret, 0x000d signature_algorithms | 0x001d x25519, 0x0017 secp256r1, 0x0018 secp384r1 | 0x0503 ecdsa_secp384r1_sha384, 0x0403 ecdsa_secp256r1_sha256, 0x0807, 0x0806 rsa_pss_rsae_sha512, 0x0805 rsa_pss_rsae_sha384, 0x0804 rsa_pss_rsae_sha256, 0x0601 rsa_pkcs1_sha512, 0x0501 rsa_pkcs1_sha384, 0x0401 rsa_pkcs1_sha256 |
| #4 | t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 | 771,4866-4865-4867-49196-49195-52393-49200-49199-52392-255,10-16-51-0-35-13-43-11-5-45-23,29-23-24,0 | ced1bbff6787394fe21200923bf0d16d | ai-tester.paulcalvano.com | h2, http/1.1 | h2 | TLS 1.3 | TLS 13 | TLS_AES_128_GCM_SHA256 | false | false | 0x1302 TLS_AES_256_GCM_SHA384, 0x1301 TLS_AES_128_GCM_SHA256, 0x1303 TLS_CHACHA20_POLY1305_SHA256, 0xc02c ECDHE_ECDSA_AES_256_GCM_SHA384, 0xc02b ECDHE_ECDSA_AES_128_GCM_SHA256, 0xcca9 ECDHE_ECDSA_CHACHA20_POLY1305, 0xc030 ECDHE_RSA_AES_256_GCM_SHA384, 0xc02f ECDHE_RSA_AES_128_GCM_SHA256, 0xcca8 ECDHE_RSA_CHACHA20_POLY1305, 0x00ff | 0x000a supported_groups, 0x0010 alpn, 0x0033 key_share, 0x0000 server_name, 0x0023 session_ticket, 0x000d signature_algorithms, 0x002b supported_versions, 0x000b ec_point_formats, 0x0005 status_request, 0x002d psk_key_exchange_modes, 0x0017 extended_master_secret | 0x001d x25519, 0x0017 secp256r1, 0x0018 secp384r1 | 0x0503 ecdsa_secp384r1_sha384, 0x0403 ecdsa_secp256r1_sha256, 0x0807, 0x0806 rsa_pss_rsae_sha512, 0x0805 rsa_pss_rsae_sha384, 0x0804 rsa_pss_rsae_sha256, 0x0601 rsa_pkcs1_sha512, 0x0501 rsa_pkcs1_sha384, 0x0401 rsa_pkcs1_sha256 |
| #5 | t13d1011h2_61a7ad8aa9b6_3fcd1a44f3e3 | 771,4866-4865-4867-49196-49195-52393-49200-49199-52392-255,11-23-10-5-0-35-51-43-16-45-13,29-23-24,0 | 52cf517d631fd45fb1db2345dd8b6e66 | ai-tester.paulcalvano.com | h2, http/1.1 | h2 | TLS 1.3 | TLS 13 | TLS_AES_128_GCM_SHA256 | false | false | 0x1302 TLS_AES_256_GCM_SHA384, 0x1301 TLS_AES_128_GCM_SHA256, 0x1303 TLS_CHACHA20_POLY1305_SHA256, 0xc02c ECDHE_ECDSA_AES_256_GCM_SHA384, 0xc02b ECDHE_ECDSA_AES_128_GCM_SHA256, 0xcca9 ECDHE_ECDSA_CHACHA20_POLY1305, 0xc030 ECDHE_RSA_AES_256_GCM_SHA384, 0xc02f ECDHE_RSA_AES_128_GCM_SHA256, 0xcca8 ECDHE_RSA_CHACHA20_POLY1305, 0x00ff | 0x000b ec_point_formats, 0x0017 extended_master_secret, 0x000a supported_groups, 0x0005 status_request, 0x0000 server_name, 0x0023 session_ticket, 0x0033 key_share, 0x002b supported_versions, 0x0010 alpn, 0x002d psk_key_exchange_modes, 0x000d signature_algorithms | 0x001d x25519, 0x0017 secp256r1, 0x0018 secp384r1 | 0x0503 ecdsa_secp384r1_sha384, 0x0403 ecdsa_secp256r1_sha256, 0x0807, 0x0806 rsa_pss_rsae_sha512, 0x0805 rsa_pss_rsae_sha384, 0x0804 rsa_pss_rsae_sha256, 0x0601 rsa_pkcs1_sha512, 0x0501 rsa_pkcs1_sha384, 0x0401 rsa_pkcs1_sha256 |
| Conn | Fingerprint | Pseudo-header order | Header order | SETTINGS | Window update | Priority frames | First frame types |
|---|---|---|---|---|---|---|---|
| #1 | 2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p | :method,:scheme,:authority,:path | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | ENABLE_PUSH(2)=0, INITIAL_WINDOW_SIZE(4)=2097152, MAX_FRAME_SIZE(5)=16384, MAX_HEADER_LIST_SIZE(6)=16384 | 5177345 | SETTINGS, SETTINGS, WINDOW_UPDATE, HEADERS | |
| #2 | 2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p | :method,:scheme,:authority,:path | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | ENABLE_PUSH(2)=0, INITIAL_WINDOW_SIZE(4)=2097152, MAX_FRAME_SIZE(5)=16384, MAX_HEADER_LIST_SIZE(6)=16384 | 5177345 | SETTINGS, WINDOW_UPDATE, HEADERS, SETTINGS, HEADERS | |
| #3 | 2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p | :method,:scheme,:authority,:path | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | ENABLE_PUSH(2)=0, INITIAL_WINDOW_SIZE(4)=2097152, MAX_FRAME_SIZE(5)=16384, MAX_HEADER_LIST_SIZE(6)=16384 | 5177345 | SETTINGS, WINDOW_UPDATE, HEADERS | |
| #4 | 2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p | :method,:scheme,:authority,:path | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | ENABLE_PUSH(2)=0, INITIAL_WINDOW_SIZE(4)=2097152, MAX_FRAME_SIZE(5)=16384, MAX_HEADER_LIST_SIZE(6)=16384 | 5177345 | SETTINGS, WINDOW_UPDATE, HEADERS | |
| #5 | 2:0;4:2097152;5:16384;6:16384|5177345|0|m,s,a,p | :method,:scheme,:authority,:path | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | ENABLE_PUSH(2)=0, INITIAL_WINDOW_SIZE(4)=2097152, MAX_FRAME_SIZE(5)=16384, MAX_HEADER_LIST_SIZE(6)=16384 | 5177345 | SETTINGS, WINDOW_UPDATE, HEADERS |
| Conn | RTT | RTT var | Snd MSS | Rcv MSS | Adv MSS | Cwnd | Rcv space | Retransmits | Total retrans | Lost |
|---|---|---|---|---|---|---|---|---|---|---|
| #1 | 30.0ms | 5.0ms | 1408 | 536 | 1408 | 10 | 14080 | 0 | 0 | 0 |
| #2 | 34.9ms | 1.1ms | 1408 | 536 | 1408 | 13 | 14080 | 0 | 0 | 0 |
| #3 | 36.2ms | 10.4ms | 1408 | 536 | 1408 | 10 | 14080 | 0 | 0 | 0 |
| #4 | 34.5ms | 7.3ms | 1408 | 536 | 1408 | 10 | 14080 | 0 | 0 | 0 |
| #5 | 40.4ms | 11.4ms | 1408 | 536 | 1408 | 10 | 14080 | 0 | 0 | 0 |
TTL, initial window and MSS come from the raw SYN packet -- the one layer a proxy fleet can't easily disguise, since it describes the kernel that opened the socket. Best-effort: requires a capture covering this connection's timestamp.
| Conn | TTL | Window size | MSS | Window scale | SACK permitted | Fingerprint | Pcap file |
|---|---|---|---|---|---|---|---|
| #1 | 123 | 62727 | 1460 | 7 | true | 123:62727:1460:7 | syn-20260914-151130.pcap |
| #2 | 123 | 62727 | 1460 | 7 | true | 123:62727:1460:7 | syn-20260914-151130.pcap |
| #3 | 123 | 62727 | 1460 | 7 | true | 123:62727:1460:7 | syn-20260914-151130.pcap |
| #4 | 123 | 62727 | 1460 | 7 | true | 123:62727:1460:7 | syn-20260914-151130.pcap |
| #5 | 123 | 62727 | 1460 | 7 | true | 123:62727:1460:7 | syn-20260914-151130.pcap |
Download raw capture: syn-20260914-151130.pcap
No self-report from this client. If it couldn't call /report itself, you can file one manually on its behalf.
Response headers are what the handler explicitly set. Content-Length and Date are added by Go's HTTP stack directly to the wire afterward and never pass back through the header map, so they don't appear here -- see Bytes for the actual byte count.
| Time | Method | Path | Proto | Status | Accept | Accept-Encoding | Served enc. | Bytes | Duration | Header order | Response headers |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 15:22:05.929 | GET | /t/8ab5c2b9e265dbff/delete | HTTP/2.0 | 200 | */* | gzip, br, zstd, deflate | 1349 | 0ms | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 15:23:28.319 | GET | /t/8ab5c2b9e265dbff/detail | HTTP/2.0 | 200 | */* | gzip, br, zstd, deflate | 12708 | 299ms | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 16:06:12.533 | GET | /t/8ab5c2b9e265dbff/report-form | HTTP/2.0 | 200 | */* | gzip, br, zstd, deflate | 2374 | 23ms | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 16:06:29.269 | GET | /t/8ab5c2b9e265dbff/results | HTTP/2.0 | 200 | */* | gzip, br, zstd, deflate | 3829 | 0ms | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | Cache-Control: no-store; Content-Type: text/html; charset=utf-8 | |
| 16:08:06.561 | GET | /t/8ab5c2b9e265dbff/pcap/syn-20260914-151130.pcap | HTTP/2.0 | 200 | */* | gzip, br, zstd, deflate | 3664 | 0ms | :method, :scheme, :authority, :path, accept, user-agent, accept-encoding | Accept-Ranges: bytes; Content-Disposition: attachment; filename="syn-20260914-151130.pcap"; Content-Length: 3664; Content-Type: application/vnd.tcpdump.pcap; Last-Modified: Mon, 14 Sep 2026 16:07:44 GMT |