SIGSEGV on second call to boost::asio::udp socket::async_recv on worker boost::thread - boost-asio

Question

I get a SIGSEGV in following class on the second time I call the start_receive(). It works correctly in my open() function, but seems to fail when input is received and I try restarting listen for more input:
#0 0x0000555555584154 in boost::asio::basic_io_object<boost::asio::datagram_socket_service<boost::asio::ip::udp>, true>::get_service (this=0x100007f00000000)
at /usr/include/boost/asio/basic_io_object.hpp:225
#1 0x000055555558398b in boost::asio::basic_datagram_socket<boost::asio::ip::udp, boost::asio::datagram_socket_service<boost::asio::ip::udp> >::async_receive_from<boost::asio::mutable_buffers_1, boost::_bi::bind_t<int, boost::_mfi::mf2<int, Vast::net_udpNC_MChandler, boost::system::error_code const&, unsigned long>, boost::_bi::list3<boost::_bi::value<Vast::net_udpNC_MChandler*>, boost::arg<1> (*)(), boost::arg<2> (*)()> > > (this=0x100007f00000000, buffers=...,
sender_endpoint=..., handler=...)
at /usr/include/boost/asio/basic_datagram_socket.hpp:895
#2 0x000055555557a889 in Vast::net_udpNC_MChandler::start_receive (
this=0x7fffffff5c70) at net_udpnc_mchandler.cpp:58
#3 0x000055555557aa77 in Vast::net_udpNC_MChandler::handle_input (
this=0x7fffffff5c70, error=..., bytes_transferred=24)
at net_udpnc_mchandler.cpp:100
#4 0x000055555557abb3 in Vast::net_udpNC_MChandler::handle_buffer (
this=0x7fffffff5c70, buf=0x7fffffffdad0 "\035\300", bytes_transferred=24)
at net_udpnc_mchandler.cpp:114
#5 0x000055555556397f in test_process_encoded ()
at unittest_net_udpnc_mchandler.cpp:43
#6 0x000055555556400e in main () at unittest_net_udpnc_mchandler.cpp:101
Header:
class net_udpNC_MChandler
{
public:
net_udpNC_MChandler(ip::udp::endpoint local_endpoint);
//MChandler will run its own io_service
int open (AbstractRLNCMsgReceiver *msghandler);
int handle_buffer (char *buf, std::size_t bytes_transferred);
protected:
//Start the receiving loop
void start_receive ();
// handling incoming message
int handle_input (const boost::system::error_code& error,
std::size_t bytes_transferred);
private:
ip::udp::socket *_udp;
ip::udp::endpoint _remote_endpoint_;
ip::udp::endpoint _local_endpoint;
ip::udp::endpoint MC_address;
char _buf[VAST_BUFSIZ];
AbstractRLNCMsgReceiver *_msghandler = NULL;
io_service *_io_service;
boost::thread *_iosthread;
};
Source file:
net_udpNC_MChandler::net_udpNC_MChandler(ip::udp::endpoint local_endpoint) :
MC_address(ip::address::from_string("239.255.0.1"), 1037)
{
_io_service = new io_service();
_local_endpoint = local_endpoint;
}
int net_udpNC_MChandler::open(AbstractRLNCMsgReceiver *msghandler) {
_msghandler = msghandler;
if (_udp == NULL) {
_udp = new ip::udp::socket(*_io_service);
_udp->open(ip::udp::v4());
_udp->set_option(ip::udp::socket::reuse_address(true));
_udp->set_option(ip::multicast::join_group(MC_address.address ()));
boost::system::error_code ec;
_udp->bind(MC_address, ec);
std::cout << "net_udpnc_mchandler::open " + ec.message() << std::endl;
if (ec)
{
std::cout << "net_udpnc_mchandler:: open MC address failed" << ec.message() << std::endl;
}
//Add async receive to io_service queue
start_receive();
std::cout << "net_udpnc_mchandler::open _udp->_local_endpoint: " << _udp->local_endpoint() << " _local_endpoint" << _local_endpoint << std::endl;
//Start the thread handling async receives
_iosthread = new boost::thread(boost::bind(&boost::asio::io_service::run, _io_service));
}
return 0;
}
void net_udpNC_MChandler::start_receive()
{
_udp->async_receive_from(
boost::asio::buffer(_buf, VAST_BUFSIZ), _remote_endpoint_,
boost::bind(&net_udpNC_MChandler::handle_input, this,
boost::asio::placeholders::error,
boost::asio::placeholders::bytes_transferred));
}
// handling incoming message
int net_udpNC_MChandler::handle_input (const boost::system::error_code& error,
std::size_t bytes_transferred)
{
RLNCHeader header;
if (!error)
{
//Store UDP messages
char *p = _buf;
memcpy(&header, p, sizeof(RLNCHeader));
if (RLNCHeader_factory::isRLNCHeader (header) && header.enc_packet_count > 1)
{
CPPDEBUG("net_udpnc_mchandler::handle_input: Encoded packet received" << std::endl);
process_encoded (bytes_transferred);
}
//Restart waiting for new packets
start_receive();
}
else {
CPPDEBUG("Error on UDP socket receive: " << error.message() << std::endl;);
}
return -1;
}
The strangest thing is that everything works if I use a default constructor without arguments (i.e. no local_endpoint), this SIGSEGV does not appear. But as soon as I change the constructor to the current one, I get the SIGSEGV.
The _io_service is a class object and it does not get destructed anywhere but the destructor, so I do not know how I can get a SIGSEGV for it...
Is there some requirement on the handler class that it has a no arguments constructor?