src/vendor/net2/src/unix.rs

   1 //! Unix-specific extensions to the `std::net` types.
   2
   3 use std::io;
   4 use sys::c::{self, c_int};
   5
   6 use {TcpBuilder, UdpBuilder};
   7 use ext::{self, AsSock};
   8
   9 /// Unix-specific extensions for the `TcpBuilder` type in this library.
  10 pub trait UnixTcpBuilderExt {
  11     /// Set value for the `SO_REUSEPORT` option on this socket.
  12     ///
  13     /// This indicates that futher calls to `bind` may allow reuse of local
  14     /// addresses. For IPv4 sockets this means that a socket may bind even when
  15     /// there's a socket already listening on this port.
  16     fn reuse_port(&self, reuse: bool) -> io::Result<&Self>;
  17
  18     /// Check the value of the `SO_REUSEPORT` option on this socket.
  19     fn get_reuse_port(&self) -> io::Result<bool>;
  20 }
  21
  22 impl UnixTcpBuilderExt for TcpBuilder {
  23     fn reuse_port(&self, reuse: bool) -> io::Result<&Self> {
  24         ext::set_opt(self.as_sock(), c::SOL_SOCKET, c::SO_REUSEPORT,
  25                     reuse as c_int).map(|()| self)
  26     }
  27
  28     fn get_reuse_port(&self) -> io::Result<bool> {
  29         ext::get_opt(self.as_sock(), c::SOL_SOCKET, c::SO_REUSEPORT)
  30             .map(ext::int2bool)
  31     }
  32 }
  33
  34 /// Unix-specific extensions for the `UdpBuilder` type in this library.
  35 pub trait UnixUdpBuilderExt {
  36     /// Set value for the `SO_REUSEPORT` option on this socket.
  37     ///
  38     /// This indicates that futher calls to `bind` may allow reuse of local
  39     /// addresses. For IPv4 sockets this means that a socket may bind even when
  40     /// there's a socket already listening on this port.
  41     fn reuse_port(&self, reuse: bool) -> io::Result<&Self>;
  42
  43     /// Check the value of the `SO_REUSEPORT` option on this socket.
  44     fn get_reuse_port(&self) -> io::Result<bool>;
  45 }
  46
  47 impl UnixUdpBuilderExt for UdpBuilder {
  48     fn reuse_port(&self, reuse: bool) -> io::Result<&Self> {
  49         ext::set_opt(self.as_sock(), c::SOL_SOCKET, c::SO_REUSEPORT,
  50                     reuse as c_int).map(|()| self)
  51     }
  52
  53     fn get_reuse_port(&self) -> io::Result<bool> {
  54         ext::get_opt(self.as_sock(), c::SOL_SOCKET, c::SO_REUSEPORT)
  55             .map(ext::int2bool)
  56     }
  57 }