3DPrinting/PrusaSlicer-NonPlainar
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Bonjour lookup function in same style as resolve function.

Browse Source 
Includes refactoring of resolve function. 
refactor
This commit is contained in:
David Kocik 2022-04-22 17:52:17 +02:00
parent 457a5d4a65
commit 36f473c984
4 changed files with 494 additions and 298 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

587
src/slic3r/Utils/Bonjour.cpp
View File

@ -7,14 +7,11 @@
#include <string>
#include <map>
#include <thread>
#include <boost/optional.hpp>
#include <boost/system/error_code.hpp>
#include <boost/endian/conversion.hpp>
#include <boost/asio.hpp>
#include <boost/date_time/posix_time/posix_time_duration.hpp>
#include <boost/format.hpp>
#include <boost/thread.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <boost/log/trivial.hpp>
#include <boost/bind.hpp>
using boost::optional;
using boost::system::error_code;
@ -406,7 +403,7 @@ struct DnsMessage
DnsSDMap sdmap;
static optional<DnsMessage> decode(const std::vector<char> &buffer, const Bonjour::TxtKeys &txt_keys)
static optional<DnsMessage> decode(const std::vector<char>& buffer, const Bonjour::TxtKeys& txt_keys)
{
const auto size = buffer.size();
if (size < DnsHeader::SIZE + DnsQuestion::MIN_SIZE || size > MAX_SIZE) {
@ -430,36 +427,36 @@ struct DnsMessage
auto rr = DnsResource::decode(buffer, offset, dataoffset);
if (!rr) {
return boost::none;
} else {
}
else {
res.parse_rr(buffer, std::move(*rr), dataoffset, txt_keys);
}
}
return std::move(res);
}
private:
void parse_rr(const std::vector<char> &buffer, DnsResource &&rr, size_t dataoffset, const Bonjour::TxtKeys &txt_keys)
void parse_rr(const std::vector<char>& buffer, DnsResource&& rr, size_t dataoffset, const Bonjour::TxtKeys& txt_keys)
{
switch (rr.type) {
case DnsRR_A::TAG:
DnsRR_A::decode(this->rr_a, rr);
this->rr_a->name = rr.name;
break;
case DnsRR_AAAA::TAG:
DnsRR_AAAA::decode(this->rr_aaaa, rr);
this->rr_aaaa->name = rr.name;
break;
case DnsRR_SRV::TAG: {
auto srv = DnsRR_SRV::decode(buffer, rr, dataoffset);
if (srv) { this->sdmap.insert_srv(std::move(rr.name), std::move(*srv)); }
break;
}
case DnsRR_TXT::TAG: {
auto txt = DnsRR_TXT::decode(rr, txt_keys);
if (txt) { this->sdmap.insert_txt(std::move(rr.name), std::move(*txt)); }
break;
}
case DnsRR_A::TAG:
DnsRR_A::decode(this->rr_a, rr);
this->rr_a->name = rr.name;
break;
case DnsRR_AAAA::TAG:
DnsRR_AAAA::decode(this->rr_aaaa, rr);
this->rr_aaaa->name = rr.name;
break;
case DnsRR_SRV::TAG: {
auto srv = DnsRR_SRV::decode(buffer, rr, dataoffset);
if (srv) { this->sdmap.insert_srv(std::move(rr.name), std::move(*srv)); }
break;
}
case DnsRR_TXT::TAG: {
auto txt = DnsRR_TXT::decode(rr, txt_keys);
if (txt) { this->sdmap.insert_txt(std::move(rr.name), std::move(*txt)); }
break;
}
}
}
};
@ -490,22 +487,6 @@ std::ostream& operator<<(std::ostream &os, const DnsMessage &msg)
return os << "])";
}
struct BonjourRequest
{
static const asio::ip::address_v4 MCAST_IP4;
static const asio::ip::address_v6 MCAST_IP6;
static const uint16_t MCAST_PORT;
std::vector<char> data;
static optional<BonjourRequest> make_PTR(const std::string &service, const std::string &protocol);
static optional<BonjourRequest> make_A(const std::string& hostname);
static optional<BonjourRequest> make_AAAA(const std::string& hostname);
private:
BonjourRequest(std::vector<char> &&data) : data(std::move(data)) {}
};
const asio::ip::address_v4 BonjourRequest::MCAST_IP4{ 0xe00000fb };
const asio::ip::address_v6 BonjourRequest::MCAST_IP6 = asio::ip::make_address_v6("ff02::fb");
const uint16_t BonjourRequest::MCAST_PORT = 5353;
@ -618,44 +599,8 @@ optional<BonjourRequest> BonjourRequest::make_AAAA(const std::string& hostname)
return BonjourRequest(std::move(data));
}
// API - private part
struct Bonjour::priv
{
const std::string service;
std::string protocol;
std::string service_dn;
TxtKeys txt_keys;
unsigned timeout;
unsigned retries;
std::string hostname;
std::vector<BonjourReply> replies;
std::vector<char> buffer;
std::thread io_thread;
Bonjour::ReplyFn replyfn;
Bonjour::CompleteFn completefn;
Bonjour::ResolveFn resolvefn;
priv(std::string &&service);
std::string strip_service_dn(const std::string &service_name) const;
void udp_receive_lookup(udp::endpoint from, size_t bytes);
void lookup_perform();
void resolve_perform();
};
Bonjour::priv::priv(std::string &&service)
: service(std::move(service))
, protocol("tcp")
, timeout(10)
, retries(1)
{
buffer.resize(DnsMessage::MAX_SIZE);
}
std::string Bonjour::priv::strip_service_dn(const std::string &service_name) const
namespace {
std::string strip_service_dn(const std::string& service_name, const std::string& service_dn)
{
if (service_name.size() <= service_dn.size()) {
return service_name;
@ -668,155 +613,19 @@ std::string Bonjour::priv::strip_service_dn(const std::string &service_name) con
return service_name;
}
}
} // namespace
void Bonjour::priv::udp_receive_lookup(udp::endpoint from, size_t bytes)
UdpSession::UdpSession(Bonjour::ReplyFn rfn) : replyfn(rfn)
{
if (bytes == 0 || !replyfn) {
return;
}
buffer.resize(bytes);
auto dns_msg = DnsMessage::decode(buffer, txt_keys);
if (dns_msg) {
asio::ip::address ip = from.address();
if (dns_msg->rr_a) { ip = dns_msg->rr_a->ip; }
else if (dns_msg->rr_aaaa) { ip = dns_msg->rr_aaaa->ip; }
for (auto &sdpair : dns_msg->sdmap) {
if (! sdpair.second.srv) {
continue;
}
const auto &srv = *sdpair.second.srv;
auto service_name = strip_service_dn(sdpair.first);
std::string path;
std::string version;
BonjourReply::TxtData txt_data;
if (sdpair.second.txt) {
txt_data = std::move(sdpair.second.txt->data);
}
BonjourReply reply(ip, srv.port, std::move(service_name), srv.hostname, std::move(txt_data));
replyfn(std::move(reply));
}
}
buffer.resize(DnsMessage::MAX_SIZE);
}
void Bonjour::priv::lookup_perform()
{
service_dn = (boost::format("_%1%._%2%.local") % service % protocol).str();
const auto brq = BonjourRequest::make_PTR(service, protocol);
if (!brq) {
return;
}
auto self = this;
try {
boost::asio::io_service io_service;
udp::socket socket(io_service);
socket.open(udp::v4());
socket.set_option(udp::socket::reuse_address(true));
udp::endpoint mcast(BonjourRequest::MCAST_IP4, BonjourRequest::MCAST_PORT);
socket.send_to(asio::buffer(brq->data), mcast);
bool expired = false;
bool retry = false;
asio::deadline_timer timer(io_service);
retries--;
std::function<void(const error_code &)> timer_handler = [&](const error_code &error) {
if (retries == 0 || error) {
expired = true;
if (self->completefn) {
self->completefn();
}
} else {
retry = true;
retries--;
timer.expires_from_now(boost::posix_time::seconds(timeout));
timer.async_wait(timer_handler);
}
};
timer.expires_from_now(boost::posix_time::seconds(timeout));
timer.async_wait(timer_handler);
udp::endpoint recv_from;
const auto recv_handler = [&](const error_code &error, size_t bytes) {
if (!error) { self->udp_receive_lookup(recv_from, bytes); }
};
socket.async_receive_from(asio::buffer(buffer, buffer.size()), recv_from, recv_handler);
while (io_service.run_one()) {
if (expired) {
socket.cancel();
} else if (retry) {
retry = false;
socket.send_to(asio::buffer(brq->data), mcast);
} else {
buffer.resize(DnsMessage::MAX_SIZE);
socket.async_receive_from(asio::buffer(buffer, buffer.size()), recv_from, recv_handler);
}
}
} catch (std::exception& /* e */) {
}
}
class ResolveSocket;
// One session for socket::async_receive_from().
// Keeps buffer of data so it is not overwritten when another async_receive_from starts.
struct UdpSession : boost::enable_shared_from_this<UdpSession>{
UdpSession(ResolveSocket* sckt, Bonjour::ReplyFn rfn) : socket(sckt), replyfn(rfn)
{
buffer.resize(DnsMessage::MAX_SIZE);
}
void handle_receive(const error_code& error, size_t bytes);
udp::endpoint remote_endpoint;
std::vector<char> buffer;
ResolveSocket* socket;
Bonjour::ReplyFn replyfn;
};
// Udp socket for Bonjour::resolve_perform().
// Starts receiving answers after first send() call until io_service is stopped.
class ResolveSocket
{
private:
typedef boost::shared_ptr<UdpSession> SharedSession;
Bonjour::ReplyFn replyfn; // this doesnt call same fn as replyfn of Bonjour class
asio::ip::address multicast_address;
udp::socket socket;
udp::endpoint mcast_endpoint;
boost::shared_ptr< boost::asio::io_service > io_service;
std::string hostname;
boost::optional<BonjourRequest> request_A;
boost::optional<BonjourRequest> request_AAAA;
asio::ip::multicast::outbound_interface outbound_interface;
public:
ResolveSocket(const std::string& hostname, Bonjour::ReplyFn replyfn, const asio::ip::address& multicast_address, const asio::ip::address& interface_address, boost::shared_ptr< boost::asio::io_service > io_service);
void send();
void async_receive();
void cancel() { socket.cancel(); }
std::string get_hostname() { return hostname; }
private:
void receive_handler(SharedSession session, const error_code& error, size_t bytes);
};
ResolveSocket::ResolveSocket(const std::string& hostname, Bonjour::ReplyFn replyfn, const asio::ip::address& multicast_address, const asio::ip::address& interface_address, boost::shared_ptr< boost::asio::io_service > io_service)
: hostname(hostname)
, replyfn(replyfn)
UdpSocket::UdpSocket( Bonjour::ReplyFn replyfn, const asio::ip::address& multicast_address, const asio::ip::address& interface_address, std::shared_ptr< boost::asio::io_service > io_service)
: replyfn(replyfn)
, multicast_address(multicast_address)
, socket(*io_service)
, io_service(io_service)
{
assert(!hostname.empty() && replyfn);
try {
// open socket
boost::asio::ip::udp::endpoint listen_endpoint(multicast_address.is_v4() ? udp::v4() : udp::v6(), BonjourRequest::MCAST_PORT);
@ -844,27 +653,35 @@ ResolveSocket::ResolveSocket(const std::string& hostname, Bonjour::ReplyFn reply
}
}
void ResolveSocket::send()
UdpSocket::UdpSocket( Bonjour::ReplyFn replyfn, const asio::ip::address& multicast_address, std::shared_ptr< boost::asio::io_service > io_service)
: replyfn(replyfn)
, multicast_address(multicast_address)
, socket(*io_service)
, io_service(io_service)
{
try {
if (!request_A) {
// BonjourRequest::make_A / AAAA is now implemented to add .local correctly after the hostname.
// If that is unsufficient, we need to change make_A / AAAA and pass full hostname.
std::string trimmed_hostname = hostname;
if (size_t dot_pos = trimmed_hostname.find_first_of('.'); dot_pos != std::string::npos)
trimmed_hostname = trimmed_hostname.substr(0, dot_pos);
request_A = BonjourRequest::make_A(trimmed_hostname);
}
if (!request_AAAA) {
std::string trimmed_hostname = hostname;
if (size_t dot_pos = trimmed_hostname.find_first_of('.'); dot_pos != std::string::npos)
trimmed_hostname = trimmed_hostname.substr(0, dot_pos);
request_AAAA = BonjourRequest::make_AAAA(trimmed_hostname);
}
// multicast both queries
socket.send_to(asio::buffer(request_A->data), mcast_endpoint);
socket.send_to(asio::buffer(request_AAAA->data), mcast_endpoint);
// open socket
boost::asio::ip::udp::endpoint listen_endpoint(multicast_address.is_v4() ? udp::v4() : udp::v6(), BonjourRequest::MCAST_PORT);
socket.open(listen_endpoint.protocol());
// set socket to listen
socket.set_option(udp::socket::reuse_address(true));
socket.bind(listen_endpoint);
socket.set_option(boost::asio::ip::multicast::join_group(multicast_address));
mcast_endpoint = udp::endpoint(multicast_address, BonjourRequest::MCAST_PORT);
BOOST_LOG_TRIVIAL(info) << "Socket created. Multicast: " << multicast_address;
}
catch (std::exception& e) {
BOOST_LOG_TRIVIAL(error) << e.what();
}
}
void UdpSocket::send()
{
try {
for (const auto& request : requests)
socket.send_to(asio::buffer(request.m_data), mcast_endpoint);
// Should we care if this is called while already receiving? (async_receive call from receive_handler)
async_receive();
@ -874,30 +691,86 @@ void ResolveSocket::send()
}
}
void ResolveSocket::async_receive()
void UdpSocket::async_receive()
{
try {
// our session to hold the buffer + endpoint
auto session = boost::make_shared<UdpSession>(this, replyfn);
auto session = create_session();
socket.async_receive_from(asio::buffer(session->buffer, session->buffer.size())
, session->remote_endpoint
, boost::bind(&ResolveSocket::receive_handler, this, session, asio::placeholders::error, asio::placeholders::bytes_transferred));
, boost::bind(&UdpSocket::receive_handler, this, session, asio::placeholders::error, asio::placeholders::bytes_transferred));
}
catch (std::exception& e) {
BOOST_LOG_TRIVIAL(error) << e.what();
}
}
void ResolveSocket::receive_handler(SharedSession session, const error_code& error, size_t bytes)
void UdpSocket::receive_handler(SharedSession session, const boost::system::error_code& error, size_t bytes)
{
// let io_service to handle the datagram on session
io_service->post(bind(&UdpSession::handle_receive, session, error, bytes));
// from boost documentation io_service::post:
// The io_service guarantees that the handler will only be called in a thread in which the run(), run_one(), poll() or poll_one() member functions is currently being invoked.
io_service->post(boost::bind(&UdpSession::handle_receive, session, error, bytes));
// immediately accept new datagrams
async_receive();
}
void UdpSession::handle_receive(const error_code& error, size_t bytes)
SharedSession LookupSocket::create_session() const
{
return std::shared_ptr< LookupSession >(new LookupSession(this, replyfn));
}
void LookupSession::handle_receive(const error_code& error, size_t bytes)
{
assert(socket);
if (error) {
BOOST_LOG_TRIVIAL(error) << error.message();
return;
}
if (bytes == 0 || !replyfn) {
return;
}
buffer.resize(bytes);
auto dns_msg = DnsMessage::decode(buffer, socket->get_txt_keys());
if (dns_msg) {
asio::ip::address ip = remote_endpoint.address();
if (dns_msg->rr_a) { ip = dns_msg->rr_a->ip; }
else if (dns_msg->rr_aaaa) { ip = dns_msg->rr_aaaa->ip; }
for (auto& sdpair : dns_msg->sdmap) {
if (!sdpair.second.srv) {
continue;
}
const auto& srv = *sdpair.second.srv;
auto service_name = strip_service_dn(sdpair.first, socket->get_service_dn());
std::string path;
std::string version;
BonjourReply::TxtData txt_data;
if (sdpair.second.txt) {
txt_data = std::move(sdpair.second.txt->data);
}
BonjourReply reply(ip, srv.port, std::move(service_name), srv.hostname, std::move(txt_data));
replyfn(std::move(reply));
}
}
}
SharedSession ResolveSocket::create_session() const
{
return std::shared_ptr< ResolveSession > (new ResolveSession(this, replyfn));
}
void ResolveSession::handle_receive(const error_code& error, size_t bytes)
{
assert(socket);
if (error) {
// todo: what level? do we even log? There might be callbacks when timer runs out
BOOST_LOG_TRIVIAL(info) << error.message();
@ -910,7 +783,6 @@ void UdpSession::handle_receive(const error_code& error, size_t bytes)
buffer.resize(bytes);
#if 0
// this is log of buffer, be careful with logging here - called from async_receive
std::string str;
char const hex_chars[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
for (size_t i = 0; i < buffer.size(); i++) {
@ -952,81 +824,210 @@ void UdpSession::handle_receive(const error_code& error, size_t bytes)
}
}
void Bonjour::priv::resolve_perform()
// API - private part
struct Bonjour::priv
{
// reply callback is shared to every UDPSession which is called asyn
boost::mutex replies_guard;
std::vector<BonjourReply> replies;
// examples would probably store [self] to the lambda (and the timer one), is it ok not to do it? (Should be c++03)
const auto reply_callback = [&rpls = replies, &guard = replies_guard](BonjourReply&& reply)
{
guard.lock();
if (std::find(rpls.begin(), rpls.end(), reply) == rpls.end())
rpls.push_back(reply);
guard.unlock();
};
const std::string service;
std::string protocol;
std::string service_dn;
TxtKeys txt_keys;
unsigned timeout;
unsigned retries;
std::string hostname;
boost::shared_ptr< boost::asio::io_service > io_service(
new boost::asio::io_service
);
// std::vector<BonjourReply> replies;
std::vector<char> buffer;
std::thread io_thread;
Bonjour::ReplyFn replyfn;
Bonjour::CompleteFn completefn;
Bonjour::ResolveFn resolvefn;
priv(std::string&& service);
// void udp_receive_lookup(udp::endpoint from, size_t bytes);
void lookup_perform();
void resolve_perform();
};
Bonjour::priv::priv(std::string&& service)
: service(std::move(service))
, protocol("tcp")
, timeout(10)
, retries(1)
{
buffer.resize(DnsMessage::MAX_SIZE);
}
void Bonjour::priv::lookup_perform()
{
service_dn = (boost::format("_%1%._%2%.local") % service % protocol).str();
std::shared_ptr< boost::asio::io_service > io_service(new boost::asio::io_service);
std::vector<LookupSocket*> sockets;
std::vector<ResolveSocket*> sockets;
// resolve intefaces - from PR#6646
std::vector<boost::asio::ip::address> interfaces;
asio::ip::udp::resolver resolver(*io_service);
boost::system::error_code ec;
// ipv4 interfaces
auto results = resolver.resolve(udp::v4(), asio::ip::host_name(), "");
for (auto const& r : results) {
auto const addr = r.endpoint().address();
if (addr.is_loopback()) continue;
interfaces.emplace_back(addr);
auto results = resolver.resolve(udp::v4(), asio::ip::host_name(), "", ec);
if (!ec) {
for (const auto & r : results) {
const auto addr = r.endpoint().address();
if (addr.is_loopback()) continue;
interfaces.emplace_back(std::move(addr));
}
// create ipv4 socket for each interface
// each will send to querry to for both ipv4 and ipv6
for (const auto& intrfc : interfaces)
sockets.emplace_back(new LookupSocket(txt_keys, service, service_dn, protocol, replyfn, BonjourRequest::MCAST_IP4, intrfc, io_service));
} else {
BOOST_LOG_TRIVIAL(info) << "Failed to resolve ipv4 interfaces: " << ec.message();
}
// create ipv4 socket for each interface
// each will send to querry to for both ipv4 and ipv6
for (const auto intrfc : interfaces)
sockets.emplace_back(new ResolveSocket(hostname, reply_callback, BonjourRequest::MCAST_IP4, intrfc, io_service));
if (sockets.empty())
sockets.emplace_back(new LookupSocket(txt_keys, service, service_dn, protocol, replyfn, BonjourRequest::MCAST_IP4, io_service));
// ipv6 interfaces
interfaces.clear();
results = resolver.resolve(udp::v6(), asio::ip::host_name(), "");
for (auto const& r : results) {
auto const addr = r.endpoint().address();
if (addr.is_loopback()) continue;
interfaces.emplace_back(addr);
//udp::resolver::query query(host, PORT, boost::asio::ip::resolver_query_base::numeric_service);
results = resolver.resolve(udp::v6(), asio::ip::host_name(), "", ec);
if (!ec)
{
for (const auto& r : results) {
const auto addr = r.endpoint().address();
if (addr.is_loopback()) continue;
interfaces.emplace_back(std::move(addr));
}
// create ipv6 socket for each interface
// each will send to querry to for both ipv4 and ipv6
for (const auto& intrfc : interfaces)
sockets.emplace_back(new LookupSocket(txt_keys, service, service_dn, protocol, replyfn, BonjourRequest::MCAST_IP6, intrfc, io_service));
if (interfaces.empty())
sockets.emplace_back(new LookupSocket(txt_keys, service, service_dn, protocol, replyfn, BonjourRequest::MCAST_IP6, io_service));
} else {
BOOST_LOG_TRIVIAL(info)<< "Failed to resolve ipv6 interfaces: " << ec.message();
}
// create ipv6 socket for each interface
// each will send to querry to for both ipv4 and ipv6
for (const auto intrfc : interfaces)
sockets.emplace_back(new ResolveSocket(hostname, reply_callback, BonjourRequest::MCAST_IP6, intrfc, io_service));
try {
// send first queries
for each (auto * socket in sockets)
for (auto * socket : sockets)
socket->send();
// timer settings
asio::deadline_timer timer(*io_service);
retries--;
std::function<void(const error_code&)> timer_handler = [&](const error_code& error) {
replies_guard.lock();
int replies_count = replies.size();
replies_guard.unlock();
// end
if (retries == 0 || error || replies_count > 0) {
if (retries == 0 || error) {
// is this correct ending?
io_service->stop();
replies_guard.lock();
if (replies_count > 0 && resolvefn) {
resolvefn(replies);
if (completefn) {
completefn();
}
replies_guard.unlock();
// restart timer
} else {
retries--;
timer.expires_from_now(boost::posix_time::seconds(timeout));
timer.async_wait(timer_handler);
// trigger another round of queries
for each (auto * socket in sockets)
for (auto * socket : sockets)
socket->send();
}
};
// start timer
timer.expires_from_now(boost::posix_time::seconds(timeout));
timer.async_wait(timer_handler);
// start io_service, it will run until it has something to do - so in this case until stop is called in timer
io_service->run();
}
catch (std::exception& e) {
BOOST_LOG_TRIVIAL(error) << e.what();
}
}
void Bonjour::priv::resolve_perform()
{
// reply callback is shared to every UDPSession which is called on same thread as io_service->run();
// thus no need to mutex replies in reply_callback, same should go with the timer
std::vector<BonjourReply> replies;
// examples would store [self] to the lambda (and the timer one), is it ok not to do it? (Should be c++03)
const auto reply_callback = [&rpls = replies](BonjourReply&& reply)
{
if (std::find(rpls.begin(), rpls.end(), reply) == rpls.end())
rpls.push_back(reply);
};
std::shared_ptr< boost::asio::io_service > io_service(new boost::asio::io_service);
std::vector<ResolveSocket*> sockets;
// resolve intefaces - from PR#6646
std::vector<boost::asio::ip::address> interfaces;
asio::ip::udp::resolver resolver(*io_service);
boost::system::error_code ec;
// ipv4 interfaces
auto results = resolver.resolve(udp::v4(), asio::ip::host_name(), "", ec);
if (!ec) {
for (auto const& r : results) {
auto const addr = r.endpoint().address();
if (addr.is_loopback()) continue;
interfaces.emplace_back(addr);
}
// create ipv4 socket for each interface
// each will send to querry to for both ipv4 and ipv6
for (const auto& intrfc : interfaces)
sockets.emplace_back(new ResolveSocket(hostname, reply_callback, BonjourRequest::MCAST_IP4, intrfc, io_service));
} else {
BOOST_LOG_TRIVIAL(info) << "Failed to resolve ipv4 interfaces: " << ec.message();
}
if (sockets.empty())
sockets.emplace_back(new ResolveSocket(hostname, reply_callback, BonjourRequest::MCAST_IP4, io_service));
// ipv6 interfaces
interfaces.clear();
results = resolver.resolve(udp::v6(), asio::ip::host_name(), "", ec);
if (!ec) {
for (auto const& r : results) {
auto const addr = r.endpoint().address();
if (addr.is_loopback()) continue;
interfaces.emplace_back(addr);
}
// create ipv6 socket for each interface
// each will send to querry to for both ipv4 and ipv6
for (const auto& intrfc : interfaces)
sockets.emplace_back(new ResolveSocket(hostname, reply_callback, BonjourRequest::MCAST_IP6, intrfc, io_service));
if (interfaces.empty())
sockets.emplace_back(new ResolveSocket(hostname, reply_callback, BonjourRequest::MCAST_IP6, io_service));
} else {
BOOST_LOG_TRIVIAL(info) << "Failed to resolve ipv6 interfaces: " << ec.message();
}
try {
// send first queries
for (auto * socket : sockets)
socket->send();
// timer settings
asio::deadline_timer timer(*io_service);
retries--;
std::function<void(const error_code&)> timer_handler = [&](const error_code& error) {
int replies_count = replies.size();
// end
if (retries == 0 || error || replies_count > 0) {
// is this correct ending?
io_service->stop();
if (replies_count > 0 && resolvefn) {
resolvefn(replies);
}
// restart timer
} else {
retries--;
timer.expires_from_now(boost::posix_time::seconds(timeout));
timer.async_wait(timer_handler);
// trigger another round of queries
for (auto * socket : sockets)
socket->send();
}
};

199
src/slic3r/Utils/Bonjour.hpp
View File

@ -7,12 +7,17 @@
#include <set>
#include <unordered_map>
#include <functional>
#include <boost/asio/ip/address.hpp>
#include <boost/asio.hpp>
#include <boost/asio/ip/address.hpp>
#include <boost/optional.hpp>
#include <boost/system/error_code.hpp>
#include <boost/shared_ptr.hpp>
namespace Slic3r {
struct BonjourReply
{
typedef std::unordered_map<std::string, std::string> TxtData;
@ -40,7 +45,6 @@ struct BonjourReply
std::ostream& operator<<(std::ostream &, const BonjourReply &);
/// Bonjour lookup performer
class Bonjour : public std::enable_shared_from_this<Bonjour> {
private:
@ -86,6 +90,197 @@ private:
std::unique_ptr<priv> p;
};
struct BonjourRequest
{
static const boost::asio::ip::address_v4 MCAST_IP4;
static const boost::asio::ip::address_v6 MCAST_IP6;
static const uint16_t MCAST_PORT;
std::vector<char> m_data;
static boost::optional<BonjourRequest> make_PTR(const std::string& service, const std::string& protocol);
static boost::optional<BonjourRequest> make_A(const std::string& hostname);
static boost::optional<BonjourRequest> make_AAAA(const std::string& hostname);
private:
BonjourRequest(std::vector<char>&& data) : m_data(std::move(data)) {}
};
class LookupSocket;
class ResolveSocket;
// Session is created for each async_receive of socket. On receive, its handle_receive method is called (Thru io_service->post).
// ReplyFn is called if correct datagram was received.
class UdpSession
{
public:
UdpSession(Bonjour::ReplyFn rfn);
virtual void handle_receive(const boost::system::error_code& error, size_t bytes) = 0;
std::vector<char> buffer;
boost::asio::ip::udp::endpoint remote_endpoint;
protected:
Bonjour::ReplyFn replyfn;
};
typedef std::shared_ptr<UdpSession> SharedSession;
// Session for LookupSocket
class LookupSession : public UdpSession
{
public:
LookupSession(const LookupSocket* sckt, Bonjour::ReplyFn rfn) : UdpSession(rfn), socket(sckt) {}
void handle_receive(const boost::system::error_code& error, size_t bytes) override;
protected:
// const pointer to socket to get needed data as txt_keys etc.
const LookupSocket* socket;
};
// Session for ResolveSocket
class ResolveSession : public UdpSession
{
public:
ResolveSession(const ResolveSocket* sckt, Bonjour::ReplyFn rfn) : UdpSession(rfn), socket(sckt) {}
void handle_receive(const boost::system::error_code& error, size_t bytes) override;
protected:
// const pointer to seocket to get hostname during handle_receive
const ResolveSocket* socket;
};
// Udp socket, starts receiving answers after first send() call until io_service is stopped.
class UdpSocket
{
public:
// Two constructors: 1st is with interface which must be resolved before calling this
UdpSocket(Bonjour::ReplyFn replyfn
, const boost::asio::ip::address& multicast_address
, const boost::asio::ip::address& interface_address
, std::shared_ptr< boost::asio::io_service > io_service);
UdpSocket(Bonjour::ReplyFn replyfn
, const boost::asio::ip::address& multicast_address
, std::shared_ptr< boost::asio::io_service > io_service);
void send();
void async_receive();
void cancel() { socket.cancel(); }
protected:
void receive_handler(SharedSession session, const boost::system::error_code& error, size_t bytes);
virtual SharedSession create_session() const = 0;
Bonjour::ReplyFn replyfn;
boost::asio::ip::address multicast_address;
boost::asio::ip::udp::socket socket;
boost::asio::ip::udp::endpoint mcast_endpoint;
std::shared_ptr< boost::asio::io_service > io_service;
std::vector<BonjourRequest> requests;
};
class LookupSocket : public UdpSocket
{
public:
LookupSocket(Bonjour::TxtKeys txt_keys
, std::string service
, std::string service_dn
, std::string protocol
, Bonjour::ReplyFn replyfn
, const boost::asio::ip::address& multicast_address
, const boost::asio::ip::address& interface_address
, std::shared_ptr< boost::asio::io_service > io_service)
: UdpSocket(replyfn, multicast_address, interface_address, io_service)
, txt_keys(txt_keys)
, service(service)
, service_dn(service_dn)
, protocol(protocol)
{
assert(!service.empty() && replyfn);
create_request();
}
LookupSocket(Bonjour::TxtKeys txt_keys
, std::string service
, std::string service_dn
, std::string protocol
, Bonjour::ReplyFn replyfn
, const boost::asio::ip::address& multicast_address
, std::shared_ptr< boost::asio::io_service > io_service)
: UdpSocket(replyfn, multicast_address, io_service)
, txt_keys(txt_keys)
, service(service)
, service_dn(service_dn)
, protocol(protocol)
{
assert(!service.empty() && replyfn);
create_request();
}
const Bonjour::TxtKeys get_txt_keys() const { return txt_keys; }
const std::string get_service() const { return service; }
const std::string get_service_dn() const { return service_dn; }
protected:
SharedSession create_session() const override;
void create_request()
{
requests.clear();
// create PTR request
if (auto rqst = BonjourRequest::make_PTR(service, protocol); rqst)
requests.push_back(std::move(rqst.get()));
}
boost::optional<BonjourRequest> request;
Bonjour::TxtKeys txt_keys;
std::string service;
std::string service_dn;
std::string protocol;
};
class ResolveSocket : public UdpSocket
{
public:
ResolveSocket(const std::string& hostname
, Bonjour::ReplyFn replyfn
, const boost::asio::ip::address& multicast_address
, const boost::asio::ip::address& interface_address
, std::shared_ptr< boost::asio::io_service > io_service)
: UdpSocket(replyfn, multicast_address, interface_address, io_service)
, hostname(hostname)
{
assert(!hostname.empty() && replyfn);
create_requests();
}
ResolveSocket(const std::string& hostname
, Bonjour::ReplyFn replyfn
, const boost::asio::ip::address& multicast_address
, std::shared_ptr< boost::asio::io_service > io_service)
: UdpSocket(replyfn, multicast_address, io_service)
, hostname(hostname)
{
assert(!hostname.empty() && replyfn);
create_requests();
}
std::string get_hostname() const { return hostname; }
protected:
SharedSession create_session() const override;
void create_requests()
{
requests.clear();
// BonjourRequest::make_A / AAAA is now implemented to add .local correctly after the hostname.
// If that is unsufficient, we need to change make_A / AAAA and pass full hostname.
std::string trimmed_hostname = hostname;
if (size_t dot_pos = trimmed_hostname.find_first_of('.'); dot_pos != std::string::npos)
trimmed_hostname = trimmed_hostname.substr(0, dot_pos);
if (auto rqst = BonjourRequest::make_A(trimmed_hostname); rqst)
requests.push_back(std::move(rqst.get()));
trimmed_hostname = hostname;
if (size_t dot_pos = trimmed_hostname.find_first_of('.'); dot_pos != std::string::npos)
trimmed_hostname = trimmed_hostname.substr(0, dot_pos);
if (auto rqst = BonjourRequest::make_AAAA(trimmed_hostname); rqst)
requests.push_back(std::move(rqst.get()));
}
std::string hostname;
};
}

4
src/slic3r/Utils/OctoPrint.cpp
View File

@ -243,7 +243,7 @@ bool OctoPrint::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, Erro
.set_timeout(1) // after each timeout, if there is any answer, the resolving will stop
.on_resolve([&ra = resolved_addr](const std::vector<BonjourReply>& replies) {
std::vector<boost::asio::ip::address> resolved_addr;
for each (const auto & rpl in replies) {
for (const auto & rpl : replies) {
boost::asio::ip::address ip(rpl.ip);
ra.emplace_back(ip);
BOOST_LOG_TRIVIAL(info) << "Resolved IP address: " << rpl.ip;
@ -262,7 +262,7 @@ bool OctoPrint::upload(PrintHostUpload upload_data, ProgressFn prorgess_fn, Erro
bool OctoPrint::upload_inner_with_resolved_ip(PrintHostUpload upload_data, ProgressFn prorgess_fn, ErrorFn error_fn, const std::vector<boost::asio::ip::address>& resolved_addr) const
{
wxString error_message;
for each (const auto& ip in resolved_addr) {
for (const auto& ip : resolved_addr) {
// If test fails, test_msg_or_host_ip contains the error message.
// Otherwise on Windows it contains the resolved IP address of the host.
// Test_msg already contains resolved ip and will be cleared on start of test().

2
src/slic3r/Utils/OctoPrint.hpp
View File

@ -4,11 +4,11 @@
#include <string>
#include <wx/string.h>
#include <boost/optional.hpp>
#include <boost/asio/ip/address.hpp>
#include "PrintHost.hpp"
#include "libslic3r/PrintConfig.hpp"
class boost::asio::ip::address;
namespace Slic3r {