boost-asio

I'm fairly new to boost::asio, but I'm working on a project that has already existed for a few years and uses asio extensively. My current assignment is to add periodic metrics about various things the system is doing. One of the metrics is to observe how deep the boost::asio::io_service work queues and timer queues become at an arbitrary period of runtime. So I need to be able to ask a boost:asio::io_service object how many things it has in its queues. To illustrate what I'm asking, consider the following: boost::asio::io_service asio_service; asio_service.post( boost::bind( do_work, "eat" )

Does boost::asio::io_service guarantee that handlers are called in the same order that they are given via post() ? I can't find anything saying this in the documentation. Assume that calls to io_service::post are serialized. The current implementation does execute things in the sequence you post them, but ordering is only guaranteed for handlers that are explicitly post()ed through a strand . afaik if you want guaranteed ordering of post handler execution you have to use strand as described in the docs . 来源： https://stackoverflow.com/questions/6442812/does-boostasioio-service-preserve-the

I send binary data from client (Debian 6.0.3) to server (Windows Server 2003). To bypass most firewalls I use HTTPS POST . Client and server are implemented using Boost.Asio and OpenSSL . First I implemented the simplest possible version and it worked fine. HTTP Header: POST / HTTP/1.1 User-Agent: my custom client v.1 [binary data] ( [binary data] is not base64 encoded if this matters) Then, on another client machine it failed (connected to the same server machine). The behavior is not stable. Connection always is established fine (port 443). Most time I pass SSL handshake fine but server

So I need some way of turning given Protocol://URLorIP:Port string into string ip int port How to do such thing with boost ASIO and Boost Regex? Or is it possible - to get IP using C++ Net Lib (boost candidate) - notice - we do not need long connection - only IP. So I currently use such code for parsing #include <boost/regex.hpp> #include <vector> #include <string> int main(int argc, char** argv) { if (argc < 2) return 0; std::vector<std::string> values; boost::regex expression( // proto host port "^(\?:([^:/\?#]+)://)\?(\\w+[^/\?#:]*)(\?::(\\d+))\?" // path file parameters "(/\?(\?:[^\?#/]*/)

I use the same socket in my udp server in order to receive data from clients on some port, and later after processing of requests respond to to clients using ip::ud::socket ::async_send_to Receive is done async with async_receive_from also. The socket uses same ioService (it's the same socket after all) The documentation does not state clearly if one can have at a moment the same udp socket receive datagrams from client A (in async way) and possibly send another datagram to client B (async sent) at the same time I suspect this could lead to problems. I ended up using same socket for reply

This is somewhat related to this question , but I think I need to know a little bit more. I've been trying to get my head around how to do this for a few days (whilst working on other parts), but the time has come for me to bite the bullet and get multi-threaded. Also, I'm after a bit more information than the question linked. Firstly, about multi-threading. As I have been testing my code, I've not bothered with any multi-threading. It's just a console application that starts a connection to a test server and everything else is then handled. The main loop is this: while(true) { Root::instance(

I have a problem concerning boost asio libraries. I successfully tried to create a socket between a client and a server, this involves creation of resolvers in order to specify ip and port to the server (the server only requires port) and other objects, but, most importantly, it is necessary to use write and read_some as functions to read and write from/in the socket. I would really appreciate to use a stream, and this is possible in boost asio, but that's strange... In almost all examples using streams, to create a server it is necessary to provide port, ok, let's talk about the client...

could someone summarize in a few succinct words how the boost shared_from_this<>() smart pointer should be used, particularly from the perspective of registering handlers in the io_service using the bind function. EDIT: Some of the responses have asked for more context. Basically, I'm looking for "gotchas", counter-intuitive behaviour people have observed using this mechanism. The biggest "gotcha" I've run into is that it's illegal to call shared_from_this from the constructor. This follows directly from the rule that a shared_ptr to the object must exist before you can call shared_from_this.