Trait wasmtime_wasi::preview2::command::sync::wasi::sockets::tcp_create_socket::Host

source · 
pub trait Host {
    // Required method
    fn create_tcp_socket(
        &mut self,
        address_family: IpAddressFamily
    ) -> Result<Result<Resource<TcpSocket>, ErrorCode>>;
}

Required Methods§

source

fn create_tcp_socket( &mut self, address_family: IpAddressFamily ) -> Result<Result<Resource<TcpSocket>, ErrorCode>>

Create a new TCP socket.

Similar to socket(AF_INET or AF_INET6, SOCK_STREAM, IPPROTO_TCP) in POSIX. On IPv6 sockets, IPV6_V6ONLY is enabled by default and can’t be configured otherwise.

This function does not require a network capability handle. This is considered to be safe because at time of creation, the socket is not bound to any network yet. Up to the moment bind/connect is called, the socket is effectively an in-memory configuration object, unable to communicate with the outside world.

All sockets are non-blocking. Use the wasi-poll interface to block on asynchronous operations.

§Typical errors
  • not-supported: The specified address-family is not supported. (EAFNOSUPPORT)
  • new-socket-limit: The new socket resource could not be created because of a system limit. (EMFILE, ENFILE)
§References

Implementors§