Dav*_*son 3 c++ http http-caching poco-libraries
我使用POCO C++ Net库作为http
我想尝试为持久缓存制定策略.
首先,我想我需要从缓存标题中过期并使用缓存值进行交叉检查(请告诉我,如果我错了).
那么如何从中提取缓存头httpResponse?
我已经看到你可以用Java(getFirstHeader())执行此操作,但是如何在POCO C++中执行此操作?
以下是使用POCO的普通http GET请求:
try
{
// prepare session
URI uri("http://www.google.se");
HTTPClientSession session(uri.getHost(), uri.getPort());
// prepare path
string path(uri.getPathAndQuery());
if (path.empty()) path = "/";
// send request
printnet(path.c_str());
HTTPRequest req(HTTPRequest::HTTP_GET, path, HTTPMessage::HTTP_1_1);
session.sendRequest(req);
// get response
printnet("Get response");
HTTPResponse res;
cout << res.getStatus() << " " << res.getReason() << endl;
// print response
istream &is = session.receiveResponse(res);
StreamCopier::copyStream(is, cout);
}
catch (Exception &ex)
{
printnet(ex.displayText().c_str());
return -1;
}
return 0;
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在最后一个try块中,可以添加以下内容以将标题打印到屏幕上:
cout << "RESPONSE:";
string name;
string value;
NameValueCollection::ConstIterator i = res.begin();
while(i!=res.end()){
name=i->first;
value=i->second;
cout << name << "=" << value << endl << flush;
++i;
}
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