HLS playback via local HTTP server on iOS - ios

Question

Background : I have a custom authentication mechanism on the server end that is not supported by the MPMoviePlayer. So, I decided to have a local loopback HTTP server which will take the initial request of the player and serve the HLS manifest file.
I'm at a position where the player initiates the request to my local HTTP server and after that my local HTTP server fetches manifest file from the servers and writes it back as a http response to the player. But MPMoviePlayer is not playing the video after that.
Can someone help me achieve this?
#import "QumuMediaPlayerProxy.h"
#import "GZIP.h"
#define WELCOME_MSG 0
#define ECHO_MSG 1
#define WARNING_MSG 2
#define READ_TIMEOUT 15.0
#define READ_TIMEOUT_EXTENSION 10.0
#interface QumuMediaPlayerProxy()
#property NSURL *contentURL;
#end
#implementation QumuMediaPlayerProxy
+(NSURL*)getProxyURL{
return [NSURL URLWithString:[NSString stringWithFormat:#"http://192.168.2.11:%d%#", SERVER_PORT, #"/nkm.do"]];
}
- (id)initWithURL:(NSURL*)contentURL
{
if((self = [super init]))
{
socketQueue = dispatch_queue_create("socketQueue", NULL);
listenSocket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:socketQueue];
connectedSockets = [[NSMutableArray alloc] initWithCapacity:1];
isRunning = NO;
self.contentURL = contentURL;
}
return self;
}
- (void)startOnPort:(int)port
{
if(!isRunning)
{
if (port < 0 || port > 65535)
{
port = 0;
}
NSError *error = nil;
if(![listenSocket acceptOnPort:port error:&error])
{
NSLog(#"Error starting QumuMediaPlayerProxy: %#", error.debugDescription);
return;
}
NSLog(#"QumuMediaPlayerProxy started on port %hu", [listenSocket localPort]);
isRunning = YES;
}
}
-(void)stop
{
if(isRunning)
{
// Stop accepting connections
[listenSocket disconnect];
// Stop any client connections
#synchronized(connectedSockets)
{
NSUInteger i;
for (i = 0; i < [connectedSockets count]; i++)
{
// Call disconnect on the socket,
// which will invoke the socketDidDisconnect: method,
// which will remove the socket from the list.
[[connectedSockets objectAtIndex:i] disconnect];
}
}
NSLog(#"Stopped QumuMediaPlayerProxy");
isRunning = false;
}
}
- (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket
{
// This method is executed on the socketQueue (not the main thread)
#synchronized(connectedSockets)
{
[connectedSockets addObject:newSocket];
NSLog(#"==Accepted client==");
}
[newSocket readDataWithTimeout:-1 tag:0];
}
- (void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag
{
// This method is executed on the socketQueue (not the main thread)
if (tag == ECHO_MSG)
{
[sock readDataToData:[GCDAsyncSocket CRLFData] withTimeout:READ_TIMEOUT tag:0];
}
}
- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
{
// This method is executed on the socketQueue (not the main thread)
dispatch_async(dispatch_get_main_queue(), ^{
#autoreleasepool {
NSData *strData = [data subdataWithRange:NSMakeRange(0, [data length] - 2)];
NSString *msg = [[NSString alloc] initWithData:strData encoding:NSUTF8StringEncoding];
if (msg)
{
NSLog(#"msg===>%#",msg);
NSLog(#"contentURL===>%#",self.contentURL.absoluteString);
NSString *getStr = [msg componentsSeparatedByString:#"\n"][0];
NSString *requestedURL = [getStr substringWithRange:NSMakeRange(4, getStr.length-9)];
//NSString *host = #"http://127.0.0.1:6910/";
NSString *host = #"http://192.168.2.11:6910/";
NSURL *requestURL = self.contentURL;
if(![requestedURL containsString:#"nkm.do"]){
NSString *actualHost = [self.contentURL.absoluteString stringByReplacingOccurrencesOfString:self.contentURL.lastPathComponent withString:#""];
requestURL = [NSURL URLWithString:[actualHost stringByAppendingString:requestedURL]];
}
NSData *manifestData = [[QumuJSONHelper getInstance] fetchM3U8Playlist:requestURL];
NSString *manifestStr = [[NSString alloc] initWithData:manifestData encoding:NSUTF8StringEncoding];
NSLog(#"manifestStr===>%#",manifestStr);
/* NSArray *manifestArray = [manifestStr componentsSeparatedByString:#"\n"];
NSString *modifiedManifest = #"";
for(int i=0;i<manifestArray.count;i++){
NSString *token = manifestArray[i];
if([token containsString:#"#EXT-X-STREAM-INF"]){
NSLog(#"== Found tag EXT-X-STREAM-INF ==");
modifiedManifest = [modifiedManifest stringByAppendingString:token];
modifiedManifest = [modifiedManifest stringByAppendingString:#"\n"];
token = manifestArray[++i];
// token = [#"https://devimages.apple.com.edgekey.net/streaming/examples/bipbop_16x9/" stringByAppendingString:token];
token = [host stringByAppendingString:token];
NSLog(#"Modified URL===>%#",token);
}
modifiedManifest = [modifiedManifest stringByAppendingString:token];
modifiedManifest = [modifiedManifest stringByAppendingString:#"\n"];
}
modifiedManifest = [modifiedManifest stringByReplacingOccurrencesOfString:#"URI=\"" withString:[NSString stringWithFormat:#"URI=\"%#",host]];
NSLog(#"modifiedManifest===>%#",modifiedManifest);*/
NSString *response = #"HTTP/1.1 200 OK";
response = [response stringByAppendingString:#"\r\nContent-Type: application/vnd.apple.mpegurl;charset=UTF-8"];
response = [response stringByAppendingFormat:#"\r\nContent-Length: %ld", (unsigned long)manifestData.length];
response = [response stringByAppendingString:#"\r\nConnection: keep-alive"];
response = [response stringByAppendingString:#"\r\n\r\n"];
NSLog(#"response header ===>%#",response);
NSData *responseData = [response dataUsingEncoding:NSUTF8StringEncoding];
[sock writeData:responseData withTimeout:-1 tag:0];
[sock writeData:manifestData withTimeout:-1 tag:0];
}
else
{
NSLog(#"Error converting received data into UTF-8 String");
}
}
});
// Echo message back to client
[sock writeData:data withTimeout:-1 tag:ECHO_MSG];
}
/**
* This method is called if a read has timed out.
* It allows us to optionally extend the timeout.
* We use this method to issue a warning to the user prior to disconnecting them.
**/
- (NSTimeInterval)socket:(GCDAsyncSocket *)sock shouldTimeoutReadWithTag:(long)tag
elapsed:(NSTimeInterval)elapsed
bytesDone:(NSUInteger)length
{
if (elapsed <= READ_TIMEOUT)
{
NSString *warningMsg = #"Are you still there?\r\n";
NSData *warningData = [warningMsg dataUsingEncoding:NSUTF8StringEncoding];
[sock writeData:warningData withTimeout:-1 tag:WARNING_MSG];
return READ_TIMEOUT_EXTENSION;
}
return 0.0;
}
- (void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err
{
if (sock != listenSocket)
{
dispatch_async(dispatch_get_main_queue(), ^{
#autoreleasepool {
NSLog(#"Client Disconnected");
}
});
#synchronized(connectedSockets)
{
[connectedSockets removeObject:sock];
}
}
}
-(void)dealloc{
// [self stop];
}
#end
Thanks in advance.

Answer 1

I was writing an additional echo message back to server in
(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
Once I removed it everything started working as expected. Just mentioning this in case some one wants to use the code posted above.