readFromUntil reads from r into c.rawInput until c.rawInput contains at least n bytes or else returns an error.

readHandshakeBytes reads handshake data until c.hand contains at least n bytes.

sendDummyChangeCipherSpec sends a ChangeCipherSpec record for compatibility with middleboxes that didn't implement TLS correctly. See RFC 8446, Append

sendDummyChangeCipherSpec sends a ChangeCipherSpec record for compatibility with middleboxes that didn't implement TLS correctly. See RFC 8446, Append

serverSum returns the contents of the verify_data member of a server's Finished message.

setPskToUConn sets the psk to the handshake state and client hello.

setSessionTicketToUConn write the ticket states from the session ticket extension to the client hello and handshake state.

sha1Hash calculates a SHA1 hash over the given byte slices.

shouldUpdateBinders determines whether binders should be updated based on the presence of an initialized psk extension. This function returns true if

Split a premaster secret in two as specified in RFC 4346, Section 5.

supportedVersionsFromMax returns a list of supported versions derived from a legacy maximum version value. Note that only versions supported by this l

supportsECDHE returns whether ECDHE key exchanges can be used with this pre-TLS 1.3 client.

trafficKey generates traffic keys according to RFC 8446, Section 7.3.

AlwaysPadToLen could be used for parsed ClientHello, since some fingerprints might not use BoringSSL padding style and we want to pad to a the same le

CPUIsSlow reports whether the CPU running the test is suspected to be slow.

CanInternalLink reports whether the current system can link programs with internal linking. (This is the opposite of cmd/internal/sys.MustLinkExternal

EarlyExporterMasterSecret derives the exporter_master_secret from the early secret and the transcript up to the ClientHello.

FromRaw converts a ClientHello message in the form of raw bytes into a ClientHelloSpec. ctrlFlags: []bool{bluntMimicry, realPSK}

GetGREASEID returns a random valid GREASE ID for transport parameters.

GetPreSharedKeyCommon retrieves the final PreSharedKey-related states as defined in PreSharedKeyCommon.

GoTool reports the path to the Go tool.

GoToolPath reports the path to the Go tool. It is a convenience wrapper around GoTool. If the tool is unavailable GoToolPath calls t.Skip. If the tool

HandshakeContext runs the client or server handshake protocol if it has not yet been run. The provided Context must be non-nil. If the context is can

HasExec reports whether the current system can start new processes using os.StartProcess or (more commonly) exec.Command.

HasGoRun reports whether the current system can run programs with ``go run.''

HasLink reports whether the current system can use os.Link.

this example generates a randomized fingeprint, then re-uses it in a follow-up connection

var requestHostname = "defo.ie" // speaks http2 and TLS 1.3 and ECH and PQ var requestAddr = "defo.ie:443" var requestPath = "/ech-check.php" var requ

this example creates a new roller for each function call, however it is advised to reuse the Roller

Note that the server will reject the fake ticket(unless you set up your server to accept them) and do full handshake

Note that the server will reject the fake ticket(unless you set up your server to accept them) and do full handshake

Import TLS ClientHello data from client.tlsfingerprint.io:8443 data is a map of []byte with following keys: - cipher_suites: [10, 10, 19, 1, 19, 2, 1

IsGREASEID returns true if id is a valid GREASE ID for transport parameters.

Len determines the number of bytes that will be needed to write the number i.

MasterSecret implements the TLS 1.2 extended master secret derivation, as defined in RFC 7627 and allowed by SP 800-135, Revision 1, Section 4.2.2.

MustHaveExec checks that the current system can start new processes using os.StartProcess or (more commonly) exec.Command. If not, MustHaveExec calls

MustHaveExternalNetwork checks that the current system can use external (non-localhost) networks. If not, MustHaveExternalNetwork calls t.Skip with an

NewListener creates a Listener which accepts connections from an inner Listener and wraps each connection with [Server]. The configuration config must

NewResumptionState returns a state value that can be returned by [ClientSessionCache.Get] to resume a previous session. state needs to be returned by