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// Google.cpp
// Implements a HTTP download of the google's front page using the LibEvent-based cNetwork API
#include "Globals.h"
#include <thread>
#include "OSSupport/Event.h"
#include "OSSupport/Network.h"
/** Connect callbacks that send a HTTP GET request for google.com when connected. */
class cHTTPConnectCallbacks:
public cNetwork::cConnectCallbacks
{
cEvent & m_Event;
virtual void OnSuccess(cTCPLink & a_Link) override
{
LOGD("Connected, sending HTTP GET");
if (!a_Link.Send("GET / HTTP/1.0\r\nHost:google.com\r\n\r\n"))
{
LOGWARNING("Sending HTTP GET failed");
}
LOGD("HTTP GET queued.");
}
virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
{
LOGD("Error while connecting HTTP: %d (%s)", a_ErrorCode, a_ErrorMsg.c_str());
m_Event.Set();
}
public:
cHTTPConnectCallbacks(cEvent & a_Event):
m_Event(a_Event)
{
}
};
/** cTCPLink callbacks that dump everything it received to the log. */
class cDumpCallbacks:
public cTCPLink::cCallbacks
{
cEvent & m_Event;
cTCPLinkPtr m_Link;
virtual void OnLinkCreated(cTCPLinkPtr a_Link) override
{
ASSERT(m_Link == nullptr);
m_Link = a_Link;
}
virtual void OnReceivedData(const char * a_Data, size_t a_Size) override
{
ASSERT(m_Link != nullptr);
// Log the incoming data size:
AString Hex;
CreateHexDump(Hex, a_Data, a_Size, 16);
LOGD("Incoming data: %u bytes:\n%s", static_cast<unsigned>(a_Size), Hex.c_str());
}
virtual void OnRemoteClosed(void) override
{
ASSERT(m_Link != nullptr);
LOGD("Remote has closed the connection.");
m_Link.reset();
m_Event.Set();
}
virtual void OnError(int a_ErrorCode, const AString & a_ErrorMsg) override
{
ASSERT(m_Link != nullptr);
LOGD("Error %d (%s) in the cDumpCallbacks.", a_ErrorCode, a_ErrorMsg.c_str());
m_Link.reset();
m_Event.Set();
}
public:
cDumpCallbacks(cEvent & a_Event):
m_Event(a_Event)
{
}
};
int main()
{
cEvent evtFinish;
LOGD("Network test: Connecting to google.com:80, reading front page via HTTP.");
if (!cNetwork::Connect("google.com", 80, std::make_shared<cHTTPConnectCallbacks>(evtFinish), std::make_shared<cDumpCallbacks>(evtFinish)))
{
LOGWARNING("Cannot queue connection to google.com");
abort();
}
LOGD("Connect request has been queued.");
evtFinish.Wait();
LOGD("Network test finished");
return 0;
}
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