Boost asio socket: how to get IP, port address of connection?

Question

I have a TCP server using boost asio. I have accepted a socket connection. How to get IP, Port of machine my server is communicating with?

BTW: Is it possible to get info on what ip that connected server user sees my server4 machine?

score 31 · Accepted Answer · answered Mar 18 '11 at 13:54

31

You can get the IP and port like this:

std::string sClientIp = socket().remote_endpoint().address().to_string();
unsigned short uiClientPort = socket().remote_endpoint().port();

answered Mar 18 '11 at 13:54

Ralf

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score 5 · Answer 2 · answered Sep 13 '12 at 11:45

still if you get Bad File Descriptor error in remote_endpoint you can refer to below link.

http://www.boost.org/doc/libs/1_51_0/doc/html/boost_asio/reference/basic_socket_acceptor/accept.html

"Accept a new connection and obtain the endpoint of the peer." part will be helpful to you.

You can use as below

tcp::acceptor::endpoint_type end_type;
acceptor.accept(*stream.rdbuf(), end_type);
std::string sClientIp = end_type.address().to_string();

score 2 · Answer 3 · answered Dec 29 '17 at 05:58

I cannot comment on the original answer. I just want to mention that there's some problem with the top voted answer: socket().remote_endpoint() may throw boost::system::system_error. So remember to handle the exception or your program may crash. It took me many hours to debug this problem.

score 2 · Answer 4 · edited Jan 12 '13 at 23:11

2

http://www.boost.org/doc/libs/1_52_0/doc/html/boost_asio/reference/ip__tcp/endpoint.html

i don't have experience in it, but it looks like address and port member functions should do the trick

(edit for latest Boost version)

edited Jan 12 '13 at 23:11

William Symionow

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answered Mar 18 '11 at 13:52

fazo

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Boost asio socket: how to get IP, port address of connection?

4 Answers4