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example2.cpp
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example2.cpp
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// Example 2: Sockets + overload API for better control
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include "minihttp.h"
// Overloaded socket class that handles incoming data.
// This one just prints to standard output.
class HttpDumpSocket : public minihttp::HttpSocket
{
public:
virtual ~HttpDumpSocket() {}
protected:
virtual void _OnClose()
{
puts("_OnClose()");
minihttp::HttpSocket::_OnClose();
}
virtual void _OnOpen()
{
puts("_OnOpen()");
char buf[1024] = { 0 };
minihttp::SSLResult sr = verifySSL(buf, sizeof(buf));
printf("SSL status flags (0 is good): 0x%x. Info: %s\n", sr, buf);
minihttp::HttpSocket::_OnOpen();
}
virtual void _OnRequestDone()
{
printf("_OnRequestDone(): %s\n", GetCurrentRequest().resource.c_str());
// Do *NOT* call close() in here!
}
virtual void _OnRecv(void *buf, unsigned int size)
{
if(!size)
return;
printf("===START==[Status:%d, Size:%d]======\n", GetStatusCode(), size);
fwrite(buf, 1, size, stdout);
puts("\n===END====================");
}
};
int main(int argc, char *argv[])
{
#ifdef SIGPIPE
// On *NIX systems, don't signal writing to a closed socket.
signal(SIGPIPE, SIG_IGN);
#endif
// minihttp::Download() in example 1 does this automatically,
// but if this function is not used this has to be called first to init networking properly.
minihttp::InitNetwork();
atexit(minihttp::StopNetwork);
HttpDumpSocket *ht = new HttpDumpSocket;
ht->SetKeepAlive(3);
ht->SetBufsizeIn(64 * 1024);
ht->SetUserAgent("minihttp"); // Let the server know who we are. This is optional but it seems that some servers check that this is set.
// HTTP GET
ht->Download("example.com");
ht->Download("http://www.ietf.org/rfc/rfc2616.txt");
// Downloads requested in succession will be queued and processed one after another
// HTTP GET with SSL, if SSL support is enabled:
ht->Download("https://example.com"); // SSL connection
ht->Download("raw.githubusercontent.com/fgenesis/minihttp/master/minihttp.h"); // transparent HTTP -> HTTPS redirection
// Example HTTP POST request:
minihttp::POST post;
post.add("a", "b");
post.add("x", "y");
post.add("long string", "possibly invalid data: /x/&$+*#'?!;");
post.add("normal", "data");
ht->Download("https://httpbin.org/post", NULL, NULL, &post);
minihttp::SocketSet ss;
ss.add(ht, true); // true: Delete socket if closed and no task left.
// This is non-blocking and could be done in background or by another thread.
// Hogs quite some CPU doing it this way, though.
while(ss.size())
ss.update();
return 0;
}