Switched io::net::tcp to use ToSocketAddr

TcpListener and TcpStream are converted to use ToSocketAddr trait in
their constructor methods.

[breaking-change]

Author: netvl

src/libstd/io/net/mod.rs

@@ -10,8 +10,11 @@
 
 //! Networking I/O
 
+use io::{IoError, InvalidInput};
+use option::None;
+use result::{Result, Ok, Err};
 use rt::rtio;
-use self::ip::{Ipv4Addr, Ipv6Addr, IpAddr};
+use self::ip::{Ipv4Addr, Ipv6Addr, IpAddr, ToSocketAddr};
 
 pub use self::addrinfo::get_host_addresses;
 
@@ -38,3 +41,25 @@ fn from_rtio(ip: rtio::IpAddr) -> IpAddr {
         }
     }
 }
+
+fn with_addresses<A: ToSocketAddr, T>(
+    addr: A, 
+    action: |&mut rtio::IoFactory, rtio::SocketAddr| -> Result<T, rtio::IoError>
+) -> Result<T, IoError> {
+    const DEFAULT_ERROR: IoError = IoError {
+        kind: InvalidInput,
+        desc: "no addresses found for hostname",
+        detail: None
+    };
+
+    let addresses = try!(addr.to_socket_addr_all());
+    let mut err = DEFAULT_ERROR;
+    for addr in addresses.into_iter() {
+        let addr = rtio::SocketAddr { ip: to_rtio(addr.ip), port: addr.port };
+        match rtio::LocalIo::maybe_raise(|io| action(io, addr)) {
+            Ok(r) => return Ok(r),
+            Err(e) => err = IoError::from_rtio_error(e)
+        }
+    }
+    Err(err)
+}