      1
      2
      3
      4
      5
      6
      7
      8
      9
     10
     11
     12
     13
     14
     15
     16
     17
     18
     19
     20
     21
     22
     23
     24
     25
     26
     27
     28
     29
     30
     31
     32
     33
     34
     35
     36
     37
     38
     39
     40
     41
     42
     43
     44
     45
     46
     47
     48
     49
     50
     51
     52
     53
     54
     55
     56
     57
     58
     59
     60
     61
     62
     63
     64
     65
     66
     67
     68
     69
     70
     71
     72
     73
     74
     75
     76
     77
     78
     79
     80
     81
     82
     83
     84
     85
     86
     87
     88
     89
     90
     91
     92
     93
     94
     95
     96
     97
     98
     99
    100
    101
    102
    103
    104
    105
    106
    107
    108
    109
    110
    111
    112
    113
    114
    115
    116
    117
    118
    119
    120
    121
    122
    123
    124
    125
    126
    127
    128
    129
    130
    131
    132
    133
    134
    135
    136
    137
    138
    139
    140
    141
    142
    143
    144

    // Copyright 2015 The Rust Project Developers. See the COPYRIGHT
    // file at the top-level directory of this distribution and at
    // http://rust-lang.org/COPYRIGHT.
    //
    // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
    // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
    // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
    // option. This file may not be copied, modified, or distributed
    // except according to those terms.

    use std::fmt;
    use std::io;
    use std::mem;
    use std::net::{Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
    #[cfg(target_os = "redox")]
    use libc::c_int;
    #[cfg(unix)]
    use libc::c_int;
    #[cfg(windows)]
    use winapi::ctypes::c_int;

    use sys;
    use sys::c;

    pub struct Socket {
        inner: sys::Socket,
    }

    impl Socket {
        pub fn new(family: c_int, ty: c_int) -> io::Result<Socket> {
            Ok(Socket { inner: try!(sys::Socket::new(family, ty)) })
        }

        pub fn bind(&self, addr: &SocketAddr) -> io::Result<()> {
            let (addr, len) = addr2raw(addr);
            unsafe {
                ::cvt(c::bind(self.inner.raw(), addr, len as c::socklen_t)).map(|_| ())
            }
        }

        pub fn listen(&self, backlog: i32) -> io::Result<()> {
            unsafe {
                ::cvt(c::listen(self.inner.raw(), backlog)).map(|_| ())
            }
        }

        pub fn connect(&self, addr: &SocketAddr) -> io::Result<()> {
            let (addr, len) = addr2raw(addr);
            unsafe {
                ::cvt(c::connect(self.inner.raw(), addr, len)).map(|_| ())
            }
        }

        pub fn getsockname(&self) -> io::Result<SocketAddr> {
            unsafe {
                let mut storage: c::sockaddr_storage = mem::zeroed();
                let mut len = mem::size_of_val(&storage) as c::socklen_t;
                try!(::cvt(c::getsockname(self.inner.raw(),
                                          &mut storage as *mut _ as *mut _,
                                          &mut len)));
                raw2addr(&storage, len)
            }
        }
    }

    impl fmt::Debug for Socket {
        fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
            self.inner.raw().fmt(f)
        }
    }

    impl ::AsInner for Socket {
        type Inner = sys::Socket;
        fn as_inner(&self) -> &sys::Socket { &self.inner }
    }

    impl ::FromInner for Socket {
        type Inner = sys::Socket;
        fn from_inner(sock: sys::Socket) -> Socket {
            Socket { inner: sock }
        }
    }

    impl ::IntoInner for Socket {
        type Inner = sys::Socket;
        fn into_inner(self) -> sys::Socket { self.inner }
    }

    fn addr2raw(addr: &SocketAddr) -> (*const c::sockaddr, c::socklen_t) {
        match *addr {
            SocketAddr::V4(ref a) => {
                (a as *const _ as *const _, mem::size_of_val(a) as c::socklen_t)
            }
            SocketAddr::V6(ref a) => {
                (a as *const _ as *const _, mem::size_of_val(a) as c::socklen_t)
            }
        }
    }

    fn raw2addr(storage: &c::sockaddr_storage, len: c::socklen_t) -> io::Result<SocketAddr> {
        match storage.ss_family as c_int {
            c::AF_INET => {
                unsafe {
                    assert!(len as usize >= mem::size_of::<c::sockaddr_in>());
                    let sa = storage as *const _ as *const c::sockaddr_in;
                    let bits = c::sockaddr_in_u32(&(*sa));
                    let ip = Ipv4Addr::new((bits >> 24) as u8,
                                           (bits >> 16) as u8,
                                           (bits >> 8) as u8,
                                           bits as u8);
                    Ok(SocketAddr::V4(SocketAddrV4::new(ip, ::ntoh((*sa).sin_port))))
                }
            }
            c::AF_INET6 => {
                unsafe {
                    assert!(len as usize >= mem::size_of::<c::sockaddr_in6>());

                    let sa = storage as *const _ as *const c::sockaddr_in6;
                    #[cfg(windows)]      let arr = (*sa).sin6_addr.u.Byte();
                    #[cfg(not(windows))] let arr = (*sa).sin6_addr.s6_addr;

                    let ip = Ipv6Addr::new(
                        (arr[0] as u16) << 8 | (arr[1] as u16),
                        (arr[2] as u16) << 8 | (arr[3] as u16),
                        (arr[4] as u16) << 8 | (arr[5] as u16),
                        (arr[6] as u16) << 8 | (arr[7] as u16),
                        (arr[8] as u16) << 8 | (arr[9] as u16),
                        (arr[10] as u16) << 8 | (arr[11] as u16),
                        (arr[12] as u16) << 8 | (arr[13] as u16),
                        (arr[14] as u16) << 8 | (arr[15] as u16),
                    );

                    #[cfg(windows)]      let sin6_scope_id = *(*sa).u.sin6_scope_id();
                    #[cfg(not(windows))] let sin6_scope_id = (*sa).sin6_scope_id;

                    Ok(SocketAddr::V6(SocketAddrV6::new(ip,
                                                        ::ntoh((*sa).sin6_port),
                                                        (*sa).sin6_flowinfo,
                                                        sin6_scope_id)))
                }
            }
            _ => Err(io::Error::new(io::ErrorKind::InvalidInput, "invalid argument")),
        }
    }

# Help

## Keyboard Shortcuts

`?`
  Show this help dialog
`S`
  Focus the search field
`↑`
  Move up in search results
`↓`
  Move down in search results
`↹`
  Switch tab
`⏎`
  Go to active search result
`+`
  Expand all sections
`-`
  Collapse all sections

## Search Tricks

Prefix searches with a type followed by a colon (e.g., `fn:`) to restrict the search to a given type.

Accepted types are: `fn`, `mod`, `struct`, `enum`, `trait`, `type`, `macro`, and `const`.

Search functions by type signature (e.g., `vec -> usize` or `* -> vec`)

Search multiple things at once by splitting your query with comma (e.g., `str,u8` or `String,struct:Vec,test`)