bool HTTP4CLIProtocol::EnqueueForOutbound() {
//1. Empty our local buffer
_localOutputBuffer.IgnoreAll();
//2. Get the HTTP protocol
InboundHTTPProtocol *pHTTP = (InboundHTTPProtocol *) GetFarProtocol();
//3. Prepare the HTTP headers
//pHTTP->SetOutboundHeader(HTTP_HEADERS_CONTENT_TYPE, "application/json");
pHTTP->SetOutboundHeader(HTTP_HEADERS_CONTENT_TYPE, "text/plain");
pHTTP->SetOutboundHeader(HTTP_HEADERS_ACCESS_ORIGIN, "*");
//4. Get the buffer from PT_INBOUND_JSONCLI
IOBuffer *pBuffer = GetNearProtocol()->GetOutputBuffer();
if (pBuffer == NULL)
return true;
//5. Put the data inside the local buffer and empty the buffer from
//the PT_INBOUND_JSONCLI
_localOutputBuffer.ReadFromBuffer(GETIBPOINTER(*pBuffer),
GETAVAILABLEBYTESCOUNT(*pBuffer));
pBuffer->IgnoreAll();
//6. Trigger EnqueueForOutbound down the stack
return pHTTP->EnqueueForOutbound();
}
bool EchoProtocol::SignalInputData(IOBuffer &buffer) {
//PREAMBLE
//First, check the transport type. If it is a
//http transport, wait for it to finish the request
//before doing stuff with it. This is not mandatory.
//We can start consume the buffer right away, but since
//we do a echo protocol, let's keep the things simple
//If the transport is direct TCP, we will echo back only after
//getting a new line character.
//I will try to keep the things extremely simple in this function
//sacrificing "user input sanitize" for simplicity. Anyway, I think
//we all know how an echo protocol should behave...
//1. Check and see if the protocol is HTTP or not
if (GetFarProtocol()->GetType() == PT_INBOUND_HTTP) {
//2. This has HTTP protocol as carrier. Get it and
//wait for it to complete
InboundHTTPProtocol *pHTTP = (InboundHTTPProtocol *) GetFarProtocol();
if (!pHTTP->TransferCompleted()) {
FINEST("HTTP transfer not completed yet");
return true;
}
//3. Ok, it is complete. Get the data and put it inside the output buffer
//Actually, we are going to add the string "ECHO " first, and after that
//the actual data. Just for fun...
_outputBuffer.ReadFromString("ECHO ");
_outputBuffer.ReadFromBuffer(
GETIBPOINTER(buffer),
GETAVAILABLEBYTESCOUNT(buffer));
//3.1. Let's also dump the complete HTTP request. You might want to pick
//up a thing or 2 from it. Just for fun...
FINEST("HTTP request:\n%s", STR(pHTTP->GetHeaders().ToString()));
//4. Ignore the input buffer now.
buffer.IgnoreAll();
//5. Add some fancy mime type and some custom HTTP headers... Just for fun...
pHTTP->SetOutboundHeader(HTTP_HEADERS_CONTENT_TYPE, "text/plain");
pHTTP->SetOutboundHeader("My-fancy-http-header", "aloha from C++ RTMP Server");
//6. We are done. Enqueue the stack for outbound I/O
return EnqueueForOutbound();
} else {
//7. Get the data inside a string
string data = string((const char *) GETIBPOINTER(buffer), GETAVAILABLEBYTESCOUNT(buffer));
//8. extremely minimal and dangerous test to see if we have a new-line,
//but for the sake of simplicity, I'm just going to keep it like that
if (data.length() == 0 || data[data.length() - 1] != '\n') {
FINEST("Not enough data. So far I have %s. Wait for more...", STR(data));
return true;
}
//9. Ok, it is complete. Get the data and put it inside the output buffer
//Actually, we are going to add the string "ECHO " first, and after that
//the actual data. Just for fun...
_outputBuffer.ReadFromString("ECHO ");
_outputBuffer.ReadFromBuffer(
GETIBPOINTER(buffer),
GETAVAILABLEBYTESCOUNT(buffer));
//10. Ignore the input buffer now.
buffer.IgnoreAll();
//11. for demonstration purposes, whenever I get the string "testHttpRequest"
//I'm just going to do a request to "http://www.rtmpd.com" and print out
//the page on console. This should illustrate how to use the outbound HTTP protocol
HTTPDownloadProtocol::DoSimpleGETRequestWithSomePayload("http://www.rtmpd.com/resources","Some data.... Hello World!");
//11. We are done. Enqueue the stack for outbound I/O
return EnqueueForOutbound();
}
}
