twisted.internet.interfaces.INegotiated

interface documentation

class INegotiated(ISSLTransport): (source)

Known implementations: twisted.protocols.tls.TLSMemoryBIOProtocol

A TLS based transport that supports using ALPN to negotiate the protocol to be used inside the encrypted tunnel.

Attribute negotiatedProtocol The protocol selected to be spoken using ALPN. If the remote peer does not support ALPN, or ALPN is not available via local TLS libraries, negotiatedProtocol will be None. Otherwise, negotiatedProtocol...

Inherited from ISSLTransport:

Method getPeerCertificate Return an object with the peer's certificate info.

Inherited from ITCPTransport (via ISSLTransport):

Method	`abortConnection`	Close the connection abruptly.
Method	`getHost`	Returns `IPv4Address` or `IPv6Address`.
Method	`getPeer`	Returns `IPv4Address` or `IPv6Address`.
Method	`getTcpKeepAlive`	Return if `SO_KEEPALIVE` is enabled.
Method	`getTcpNoDelay`	Return if `TCP_NODELAY` is enabled.
Method	`loseWriteConnection`	Half-close the write side of a TCP connection.
Method	`setTcpKeepAlive`	Enable/disable `SO_KEEPALIVE`.
Method	`setTcpNoDelay`	Enable/disable `TCP_NODELAY`.

Inherited from ITransport (via ISSLTransport, ITCPTransport):

Method	`loseConnection`	Close my connection, after writing all pending data.
Method	`write`	Write some data to the physical connection, in sequence, in a non-blocking fashion.
Method	`writeSequence`	Write an iterable of byte strings to the physical connection.

negotiatedProtocol: bytes | None = (source) ¶

The protocol selected to be spoken using ALPN. If the remote peer does not support ALPN, or ALPN is not available via local TLS libraries, negotiatedProtocol will be None. Otherwise, negotiatedProtocol will be the name of the selected protocol as bytes. Until the TLS handshake has completed, this property may incorrectly return None: wait until data has been received before trusting it. See https://github.com/twisted/twisted/issues/6024.