poco-libraries

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: Building ARM GNU Cross compiler I am using POCO c++ library to implement my project in ubuntu environment. And I want to cross compile into the ARM9 based board from my POCO c++ code. How to cross compile it for ARM9? 回答1: Get a cross compiler for your target. Then take one of the cross-build configurations in $POCO_BASE/build/config (ARM-Linux, DigiEL, Angstrom, ELDK, etc.), copy it and make the necessary

问题 So all of a sudden they decide I need an authorization header for Spotify Search API. My application runs in C++ using Poco Net libraries and I can't get it to work. I went through all that process of getting the "code" that I am supposed to exchange for the token. I assume this code is valid, even though I used just a totally unrelated domain then copied it of the variable that was sent to that page. See https://developer.spotify.com/web-api/authorization-guide/ This is my code that isn't

问题 Particularly I'm talking about the constructor of this Poco class: Poco.TimerCallback I would like to use it in legacy C++ code where most of the classes I've written are "static" so that they only contain static methods and no constructors, just because I won't need multiple instances of such objects anyway, and the classes are merely for encapsulation. Well yeah, the Poco guys suggest to add a callback method like this: TimerCallback<MyClass> callback(*this, &MyClass::onTimer); timer.start

问题 I am trying to set up a websocket server using POCO 1.7.5. The sample from POCO found here works well. Lines 111-122 reads (sligthly prettified): WebSocket ws(request, response); char buffer[1024]; int n, flags; do { n = ws.receiveFrame(buffer, sizeof(buffer), flags); ws.sendFrame(buffer, n, flags); } while (n > 0 && (flags & WebSocket::FRAME_OP_BITMASK) != WebSocket::FRAME_OP_CLOSE); However, this approach does not take care of answering ping frames by pong frames. How do I do this properly

问题 Im using POCO C++ Net libraries for http I want to try make a strategy for persistent caching. First of all I think I need to get expires from the cache headers and cross check with cached values (please tell me if I'm wrong). So how can I extract the cache header from httpResponse ? I've seen that you can do this in Java, (getFirstHeader()), but how do I do it in POCO C++? Below is an ordinary http GET-request using POCO: try { // prepare session URI uri("http://www.google.se");

问题 I am using C++ and OpenCV and I'd like to load an image from password protected URL. I succeeded in loading image from URL using idea of this link which uses POCO library, but I do not know what should I do when I have to use username and password in order to access the URL. 回答1: I'd say do what @StevenV said and try to encode the credentials in the URI. If that doesn't work or you don't want to use that method you have to use the POCO HTTPClientSession class instead. Something like this: URI

问题 I want to send some data from a C++ application to a server using a HTTP PUT request. I am using poco library for networking in my application. I am using this code snippet: HTTPClientSession session(_uri.getHost(), _uri.getPort()); HTTPRequest req(HTTPRequest::HTTP_PUT, path, HTTPMessage::HTTP_1_1); Where do I set the content (file) stream when I send the request? Can anyone show me an example using this library? 回答1: Quoting the online documentation for HTTPClientSession : sendRequest()

问题 I'm trying to link to static versions of the POCO C++ libs like this: g++ BCCMain.o -L$_POCO_LIBS -Wl,-Bstatic $_POCO_LIBS/libPocoFoundation.a $_POCO_LIBS/libPocoUtil.a $_POCO_LIBS/libPocoXML.a $_POCO_LIBS/libPocoJSON.a -Wl,-Bdynamic -o BCMain Unfortunatelly this gives errors about some undefined references to symbols like: Poco::Logger::get(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&) even though Poco::Logger::get(std::string const&) actually IS defined in

问题 I am trying to connect to the Echo Test Websocket using the Poco C++ libraries. In order to do so here is my code which should set up the Websocket: HTTPClientSession cs("echo.websocket.org"); HTTPRequest request(HTTPRequest::HTTP_GET, "/ws"); HTTPResponse response; WebSocket* m_psock = new WebSocket(cs, request, response); m_psock->close(); //close immidiately However it does not work: I am getting an error message like this: Poco::Exception: WebSocket Exception: Cannot upgrade to WebSocket

问题 I'm trying to make an HTTP Post with HTTP Basic Authentication (cleartext username and password), using POCO. I found an example of a Get and have tried to modify it, but being a rookie I think I've mangled it beyond usefulness. Anyone know how to do this? Yes, I've already seen the other SO question on this: POCO C++ - NET SSL - how to POST HTTPS request, but I can't make sense of how it is trying to implement the username and password part. I also don't understand the use of "x-www-form