Struct ockam::TcpTransport

pub struct TcpTransport { /* private fields */ }

High level management interface for TCP transports

Be aware that only one TcpTransport can exist per node, as it registers itself as a router for the TCP address type. Multiple calls to TcpTransport::create will fail.

To listen for incoming connections use tcp.listen().

To register additional connections on an already initialised TcpTransport, use tcp.connect(). This step is optional because the underlying TcpRouter is capable of lazily establishing a connection upon arrival of an initial message.

use ockam_transport_tcp::TcpTransport;
let tcp = TcpTransport::create(&ctx).await?;
tcp.listen("127.0.0.1:8000").await?; // Listen on port 8000
tcp.connect("127.0.0.1:5000").await?; // And connect to port 5000

The same TcpTransport can also bind to multiple ports.

use ockam_transport_tcp::TcpTransport;
let tcp = TcpTransport::create(&ctx).await?;
tcp.listen("127.0.0.1:8000").await?; // Listen on port 8000
tcp.listen("127.0.0.1:9000").await?; // Listen on port 9000

Implementations

impl TcpTransport

pub async fn create(ctx: &Context) -> Result<TcpTransport, Error>

Create a new TCP transport and router for the current node

use ockam_transport_tcp::TcpTransport;
let tcp = TcpTransport::create(&ctx).await?;

pub async fn connect<S>(&self, peer: S) -> Result<Address, Error> where
    S: AsRef<str>, 

Manually establish an outgoing TCP connection on an existing transport. This step is optional because the underlying TcpRouter is capable of lazily establishing a connection upon arrival of the initial message.

use ockam_transport_tcp::TcpTransport;
let tcp = TcpTransport::create(&ctx).await?;
tcp.listen("127.0.0.1:8000").await?; // Listen on port 8000
tcp.connect("127.0.0.1:5000").await?; // and connect to port 5000

pub async fn disconnect<S>(&self, peer: S) -> Result<(), Error> where
    S: AsRef<str>, 

Disconnect from peer

pub async fn listen<S>(&self, bind_addr: S) -> Result<SocketAddr, Error> where
    S: AsRef<str>, 

Start listening to incoming connections on an existing transport

Returns the local address that this transport is bound to.

This can be useful, for example, when binding to port 0 to figure out which port was actually bound.

use ockam_transport_tcp::TcpTransport;
let tcp = TcpTransport::create(&ctx).await?;
tcp.listen("127.0.0.1:8000").await?;

impl TcpTransport

pub async fn create_inlet(
    &self,
    bind_addr: impl Into<String>,
    outlet_route: impl Into<Route>
) -> Result<(Address, SocketAddr), Error>

Create Tcp Inlet that listens on bind_addr, transforms Tcp stream into Ockam Routable Messages and forward them to Outlet using outlet_route. Inlet is bidirectional: Ockam Messages sent to Inlet from Outlet (using return route) will be streamed to Tcp connection. Pair of corresponding Inlet and Outlet is called Portal.

use ockam_transport_tcp::{TcpTransport, TCP};
let hop_addr = "INTERMEDIARY_HOP:8000";
let route_path = route![(TCP, hop_addr), "outlet"];

let tcp = TcpTransport::create(&ctx).await?;
tcp.create_inlet("inlet", route_path).await?;

pub async fn stop_inlet(&self, addr: impl Into<Address>) -> Result<(), Error>

Stop inlet at addr

use ockam_transport_tcp::{TcpTransport, TCP};
let hop_addr = "INTERMEDIARY_HOP:8000";
let route = route![(TCP, hop_addr), "outlet"];

let tcp = TcpTransport::create(&ctx).await?;
tcp.create_inlet("inlet", route).await?;
tcp.stop_inlet("inlet").await?;

pub async fn create_outlet(
    &self,
    address: impl Into<Address>,
    peer: impl Into<String>
) -> Result<(), Error>

Create Tcp Outlet Listener at address, that connects to peer using Tcp, transforms Ockam Messages received from Inlet into stream and sends it to peer Tcp stream. Outlet is bidirectional: Tcp stream received from peer is transformed into Ockam Routable Messages and sent to Inlet using return route. Pair of corresponding Inlet and Outlet is called Portal.

use ockam_transport_tcp::TcpTransport;

let tcp = TcpTransport::create(&ctx).await?;
tcp.create_outlet("outlet", "localhost:9000").await?;

pub async fn create_outlet_with_access_control<AC>(
    &self,
    address: impl Into<Address>,
    peer: impl Into<String>,
    access_control: AC
) -> Result<(), Error> where
    AC: AccessControl, 

FIXME

pub async fn stop_outlet(&self, addr: impl Into<Address>) -> Result<(), Error>

Stop outlet at addr

use ockam_transport_tcp::TcpTransport;
const TARGET_PEER: &str = "127.0.0.1:5000";

let tcp = TcpTransport::create(&ctx).await?;
tcp.create_outlet("outlet", TARGET_PEER).await?;
tcp.stop_outlet("outlet").await?;

Trait Implementations

impl AsyncTryClone for TcpTransport

fn async_try_clone<'life0, 'async_trait>(
    &'life0 self
) -> Pin<Box<dyn Future<Output = Result<TcpTransport, Error>> + Send + 'async_trait, Global>> where
    'life0: 'async_trait,
    TcpTransport: 'async_trait, 

Try cloning a object and return an Err in case of failure.