class XMPP::TcpTransport

Overview

Classic RFC 6120 client transport over TCP. STARTTLS is negotiated by Session on top of this transport; XEP-0368 direct TLS is pre-wrapped here (mirroring the previous Client#open_socket behavior).

Defined in:

xmpp/transport/tcp.cr

Constructors

Instance Method Summary

Instance methods inherited from class XMPP::Transport

encrypted? : Bool encrypted?, supports_starttls? : Bool supports_starttls?, tls_socket : OpenSSL::SSL::Socket::Client | Nil tls_socket

Constructor methods inherited from class XMPP::Transport

connect(config : Config) : Transport connect

Class methods inherited from class XMPP::Transport

classify_outbound(data : String) : Symbol classify_outbound, extract_attribute(xml : String, name : String) : String | Nil extract_attribute

Constructor Detail

def self.new(socket : TCPSocket, tls_socket : OpenSSL::SSL::Socket::Client | Nil = nil) #

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def self.open(config : Config) : TcpTransport #

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Instance Method Detail

def close #
Description copied from class IO

Closes this IO.

IO defines this is a no-op method, but including types may override.


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def closed? : Bool #
Description copied from class IO

Returns true if this IO is closed.

IO defines returns false, but including types may override.


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def encrypted? : Bool #
Description copied from class XMPP::Transport

True when TLS is already handled at or below this transport, so the session must not attempt a STARTTLS upgrade.


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def read(slice : Bytes) : Int32 #
Description copied from class IO

Reads at most slice.size bytes from this IO into slice. Returns the number of bytes read, which is 0 if and only if there is no more data to read (so checking for 0 is the way to detect end of file).

io = IO::Memory.new "hello"
slice = Bytes.new(4)
io.read(slice) # => 4
slice          # => Bytes[104, 101, 108, 108]
io.read(slice) # => 1
slice          # => Bytes[111, 101, 108, 108]
io.read(slice) # => 0

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def socket : TCPSocket #

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def supports_starttls? : Bool #
Description copied from class XMPP::Transport

Whether the session must negotiate a STARTTLS upgrade on this transport before authentication. Only a plaintext TCP stream does; WebSocket and BOSH transports have no STARTTLS (their security is fixed at connection time by ws/wss or http/https), so the RFC 7590 anti-stripping attempt must not run against them.


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def tls_socket : OpenSSL::SSL::Socket::Client | Nil #
Description copied from class XMPP::Transport

The underlying TLS socket when the transport opened one directly (XEP-0368 direct TLS). Nil for plaintext, STARTTLS-managed, WebSocket, and BOSH transports.


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def write(slice : Bytes) : Nil #
Description copied from class IO

Writes the contents of slice into this IO.

io = IO::Memory.new
slice = Bytes.new(4) { |i| ('a'.ord + i).to_u8 }
io.write(slice)
io.to_s # => "abcd"

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