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/**********
This library is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the
Free Software Foundation; either version 2.1 of the License, or (at your
option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.)
This library is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
more details.
You should have received a copy of the GNU Lesser General Public License
along with this library; if not, write to the Free Software Foundation, Inc.,
59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
**********/
// "liveMedia"
// Copyright (c) 1996-2005 Live Networks, Inc. All rights reserved.
// HTTP sinks
// Implementation
#include "HTTPSink.hh"
#include "GroupsockHelper.hh"
#include <string.h>
#if defined(__WIN32__) || defined(_WIN32)
#define snprintf _snprintf
#endif
////////// HTTPSink //////////
HTTPSink* HTTPSink::createNew(UsageEnvironment& env, Port ourPort) {
int ourSocket = -1;
do {
int ourSocket = setUpOurSocket(env, ourPort);
if (ourSocket == -1) break;
HTTPSink* newSink = new HTTPSink(env, ourSocket);
if (newSink == NULL) break;
appendPortNum(env, ourPort);
return newSink;
} while (0);
if (ourSocket != -1) ::closeSocket(ourSocket);
return NULL;
}
int HTTPSink::setUpOurSocket(UsageEnvironment& env, Port& ourPort) {
int ourSocket = -1;
do {
ourSocket = setupStreamSocket(env, ourPort);
if (ourSocket < 0) break;
// Make sure we have a big send buffer:
if (!increaseSendBufferTo(env, ourSocket, 50*1024)) break;
if (listen(ourSocket, 1) < 0) { // we allow only one connection
env.setResultErrMsg("listen() failed: ");
break;
}
if (ourPort.num() == 0) {
// bind() will have chosen a port for us; return it also:
if (!getSourcePort(env, ourSocket, ourPort)) break;
}
return ourSocket;
} while (0);
if (ourSocket != -1) ::closeSocket(ourSocket);
return -1;
}
void HTTPSink::appendPortNum(UsageEnvironment& env,
Port const& port) {
char tmpBuf[10]; // large enough to hold a port # string
sprintf(tmpBuf, " %d", ntohs(port.num()));
env.appendToResultMsg(tmpBuf);
}
HTTPSink::HTTPSink(UsageEnvironment& env, int ourSocket)
: MediaSink(env), fSocket(ourSocket), fClientSocket(-1) {
}
HTTPSink::~HTTPSink() {
::closeSocket(fSocket);
}
Boolean HTTPSink::isUseableFrame(unsigned char* /*framePtr*/,
unsigned /*frameSize*/) {
// default implementation
return True;
}
Boolean HTTPSink::continuePlaying() {
if (fSource == NULL) return False;
if (fClientSocket < 0) {
// We're still waiting for a connection from a client.
// Try making one now. (Recall that we're non-blocking)
struct sockaddr_in clientAddr;
SOCKLEN_T clientAddrLen = sizeof clientAddr;
fClientSocket = accept(fSocket, (struct sockaddr*)&clientAddr,
&clientAddrLen);
if (fClientSocket < 0) {
int err = envir().getErrno();
if (err != EWOULDBLOCK) {
envir().setResultErrMsg("accept() failed: ");
return False;
}
} else {
// We made a connection; so send back a HTTP "OK", followed by other
// information (in particular, "Content-Type:") that will make
// client player tools happy:
char okResponse[400];
const char* responseFmt = "HTTP/1.1 200 OK\r\nCache-Control: no-cache\r\nPragma: no-cache\r\nContent-Length: 2147483647\r\nContent-Type: %s\r\n\r\n";
#if defined(IRIX) || defined(ALPHA) || defined(_QNX4) || defined(IMN_PIM) || defined(CRIS) || defined (VXWORKS)
/* snprintf() isn't defined, so just use sprintf() - ugh! */
sprintf(okResponse, responseFmt, fSource->MIMEtype());
#else
snprintf(okResponse, sizeof okResponse, responseFmt, fSource->MIMEtype());
#endif
send(fClientSocket, okResponse, strlen(okResponse), 0);
}
}
fSource->getNextFrame(fBuffer, sizeof fBuffer,
afterGettingFrame, this,
ourOnSourceClosure, this);
return True;
}
void HTTPSink::ourOnSourceClosure(void* clientData) {
// No more input frames - we're done:
HTTPSink* sink = (HTTPSink*) clientData;
::closeSocket(sink->fClientSocket);
sink->fClientSocket = -1;
onSourceClosure(sink);
}
void HTTPSink::afterGettingFrame(void* clientData, unsigned frameSize,
unsigned /*numTruncatedBytes*/,
struct timeval presentationTime,
unsigned /*durationInMicroseconds*/) {
HTTPSink* sink = (HTTPSink*)clientData;
sink->afterGettingFrame1(frameSize, presentationTime);
}
void HTTPSink::afterGettingFrame1(unsigned frameSize,
struct timeval /*presentationTime*/) {
// Write the data back to our client socket (if we have one):
if (fClientSocket >= 0 && isUseableFrame(fBuffer, frameSize)) {
int sendResult
= send(fClientSocket, (char*)(&fBuffer[0]), frameSize, 0);
if (sendResult < 0) {
int err = envir().getErrno();
if (err != EWOULDBLOCK) {
// The client appears to have gone; close him down,
// and consider ourselves done:
ourOnSourceClosure(this);
return;
}
}
}
// Then try getting the next frame:
continuePlaying();
}
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