Struct clap_port_flag::Port [−][src]
pub struct Port { /* fields omitted */ }
Easily add a --port
flag to Structopt.
Usage
extern crate clap_port_flag; #[macro_use] extern crate structopt; use structopt::StructOpt; use clap_port_flag::Port; #[derive(Debug, StructOpt)] struct Cli { #[structopt(flatten)] port: Port, }
Methods
impl Port
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impl Port
Create a TCP socket.
Panics
If a file descriptor was passed directly, we call the unsafe
TcpListener::from_raw_fd()
method, which may panic if a non-existent file
descriptor was passed.
pub fn bind(&self) -> Result<TcpListener>
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pub fn bind(&self) -> Result<TcpListener>
Create a TCP socket from the passed in port or file descriptor.
pub fn bind_or(&self, port: u16) -> Result<TcpListener>
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pub fn bind_or(&self, port: u16) -> Result<TcpListener>
Create a TCP socket by calling to .bind()
. If it fails, create a socket
on port
.
Useful to create a default socket to listen to if none was passed.
Trait Implementations
impl StructOpt for Port
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impl StructOpt for Port
fn clap<'a, 'b>() -> App<'a, 'b>
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fn clap<'a, 'b>() -> App<'a, 'b>
Returns the corresponding clap::App
.
fn from_clap(matches: &ArgMatches) -> Self
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fn from_clap(matches: &ArgMatches) -> Self
Creates the struct from clap::ArgMatches
. It cannot fail with a parameter generated by clap
by construction. Read more
fn from_args() -> Self
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fn from_args() -> Self
Gets the struct from the command line arguments. Print the error message and quit the program in case of failure. Read more
fn from_iter<I>(iter: I) -> Self where
I: IntoIterator,
<I as IntoIterator>::Item: Into<OsString>,
<I as IntoIterator>::Item: Clone,
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fn from_iter<I>(iter: I) -> Self where
I: IntoIterator,
<I as IntoIterator>::Item: Into<OsString>,
<I as IntoIterator>::Item: Clone,
Gets the struct from any iterator such as a Vec
of your making. Print the error message and quit the program in case of failure. Read more
fn from_iter_safe<I>(iter: I) -> Result<Self, Error> where
I: IntoIterator,
<I as IntoIterator>::Item: Into<OsString>,
<I as IntoIterator>::Item: Clone,
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fn from_iter_safe<I>(iter: I) -> Result<Self, Error> where
I: IntoIterator,
<I as IntoIterator>::Item: Into<OsString>,
<I as IntoIterator>::Item: Clone,
Gets the struct from any iterator such as a Vec
of your making. Read more
impl Debug for Port
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impl Debug for Port