1 // Copyright 2013 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
14 use libc::{c_int, c_void};
15 use option::{Option, Some, None};
18 use rt::uv::uvll::UV_GETADDRINFO;
19 use rt::uv::{Loop, UvError, NativeHandle};
20 use rt::uv::status_to_maybe_uv_error_with_loop;
21 use rt::uv::net::UvAddrInfo;
23 type GetAddrInfoCallback = ~fn(GetAddrInfoRequest, &UvAddrInfo, Option<UvError>);
25 pub struct GetAddrInfoRequest(*uvll::uv_getaddrinfo_t);
27 pub struct RequestData {
28 getaddrinfo_cb: Option<GetAddrInfoCallback>,
31 impl GetAddrInfoRequest {
32 pub fn new() -> GetAddrInfoRequest {
33 let req = unsafe { uvll::malloc_req(UV_GETADDRINFO) };
34 assert!(req.is_not_null());
35 let mut req: GetAddrInfoRequest = NativeHandle::from_native_handle(req);
36 req.install_req_data();
40 pub fn getaddrinfo(&mut self, loop_: &Loop, node: Option<&str>,
41 service: Option<&str>, hints: Option<UvAddrInfo>,
42 cb: GetAddrInfoCallback) {
44 assert!(node.is_some() || service.is_some());
46 let (c_node, c_node_ptr) = match node {
48 let c_node = n.to_c_str();
49 let c_node_ptr = c_node.with_ref(|r| r);
50 (Some(c_node), c_node_ptr)
52 None => (None, null())
55 let (c_service, c_service_ptr) = match service {
57 let c_service = s.to_c_str();
58 let c_service_ptr = c_service.with_ref(|r| r);
59 (Some(c_service), c_service_ptr)
61 None => (None, null())
64 let cb = Cell::new(cb);
65 let wrapper_cb: GetAddrInfoCallback = |req, addrinfo, err| {
66 // Capture some heap values that need to stay alive for the
72 cb(req, addrinfo, err)
75 // XXX: Implement hints
76 assert!(hints.is_none());
78 self.get_req_data().getaddrinfo_cb = Some(wrapper_cb);
81 assert!(0 == uvll::getaddrinfo(loop_.native_handle(),
89 extern "C" fn getaddrinfo_cb(req: *uvll::uv_getaddrinfo_t,
91 res: *uvll::addrinfo) {
92 let mut req: GetAddrInfoRequest = NativeHandle::from_native_handle(req);
93 let loop_ = req.get_loop();
94 let err = status_to_maybe_uv_error_with_loop(loop_.native_handle(), status);
95 let addrinfo = UvAddrInfo(res);
96 let data = req.get_req_data();
97 (*data.getaddrinfo_cb.get_ref())(req, &addrinfo, err);
99 uvll::freeaddrinfo(res);
104 fn get_loop(&self) -> Loop {
107 handle: uvll::get_loop_from_fs_req(self.native_handle())
112 fn install_req_data(&mut self) {
113 let req = self.native_handle() as *uvll::uv_getaddrinfo_t;
114 let data = ~RequestData {
118 let data = transmute::<~RequestData, *c_void>(data);
119 uvll::set_data_for_req(req, data);
123 fn get_req_data<'r>(&'r mut self) -> &'r mut RequestData {
125 let data = uvll::get_data_for_req(self.native_handle());
126 let data = transmute::<&*c_void, &mut ~RequestData>(&data);
133 let data = uvll::get_data_for_req(self.native_handle());
134 let _data = transmute::<*c_void, ~RequestData>(data);
135 uvll::set_data_for_req(self.native_handle(), null::<()>());
136 uvll::free_req(self.native_handle());
141 impl NativeHandle<*uvll::uv_getaddrinfo_t> for GetAddrInfoRequest {
142 fn from_native_handle(handle: *uvll::uv_getaddrinfo_t) -> GetAddrInfoRequest {
143 GetAddrInfoRequest(handle)
145 fn native_handle(&self) -> *uvll::uv_getaddrinfo_t {
146 match self { &GetAddrInfoRequest(ptr) => ptr }
152 use option::{Some, None};
154 use rt::uv::net::accum_sockaddrs;
155 use rt::io::net::ip::{SocketAddr, Ipv4Addr};
159 fn getaddrinfo_test() {
160 let mut loop_ = Loop::new();
161 let mut req = GetAddrInfoRequest::new();
162 do req.getaddrinfo(&loop_, Some("localhost"), None, None) |_, addrinfo, _| {
163 let sockaddrs = accum_sockaddrs(addrinfo);
164 let mut found_local = false;
165 let local_addr = &SocketAddr {
166 ip: Ipv4Addr(127, 0, 0, 1),
169 for addr in sockaddrs.iter() {
170 found_local = found_local || addr == local_addr;
172 assert!(found_local);