Creating a TCP connection with SSL/TLS

Question

Hi,
I am working in a application that depends on the server. I need to estabilish a TCP connection with SSL/Tls secure connection with the server in order to get the datas.
I have the following code structure :
- (id)initWithHostAddressNSString*)_host andPortint)_port
[self clean];
self.host = _host;
self.port = _port;
CFWriteStreamRef writeStream;
CFReadStreamRef readStream;
return self;
-(BOOL)connect
if ( self.host != nil )
// Bind read/write streams to a new socket
CFStreamCreatePairWithSocketToHost(kCFAllocatorDef ault, (CFStringRef)self.host, self.port, &readStream, &writeStream);
return [self setupSocketStreams];
- (BOOL)setupSocketStreams
// Make sure streams were created correctly
if ( readStream == nil || writeStream == nil )
[self close];
return NO;
// Create buffers ---- has not been released , so need to check possible ways to release in future
incomingDataBuffer = [[NSMutableData alloc] init];
outgoingDataBuffer = [[NSMutableData alloc] init];
// Indicate that we want socket to be closed whenever streams are closed
CFReadStreamSetProperty(readStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
CFWriteStreamSetProperty(writeStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanTrue);
//Indicate that the connection needs to be done in secure manner
CFReadStreamSetProperty(readStream, kCFStreamPropertySocketSecurityLevel, kCFStreamSocketSecurityLevelNegotiatedSSL);
CFWriteStreamSetProperty(writeStream, kCFStreamPropertySocketSecurityLevel, kCFStreamSocketSecurityLevelNegotiatedSSL);
// We will be handling the following stream events
CFOptionFlags registeredEvents = kCFStreamEventOpenCompleted |
kCFStreamEventHasBytesAvailable | kCFStreamEventCanAcceptBytes |
kCFStreamEventEndEncountered | kCFStreamEventErrorOccurred;
// Setup stream context - reference to 'self' will be passed to stream event handling callbacks
CFStreamClientContext ctx = {0, self, NULL, NULL, NULL};
// Specify callbacks that will be handling stream events
BOOL doSupportAsync = CFReadStreamSetClient(readStream, registeredEvents, readStreamEventHandler, &ctx);
BOOL doSupportAsync1 = CFWriteStreamSetClient(writeStream, registeredEvents, writeStreamEventHandler, &ctx);
NSLog(@"does supported in Asynchrnous format? : %d :%d", doSupportAsync, doSupportAsync1);
// Schedule streams with current run loop
CFReadStreamScheduleWithRunLoop(readStream, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
CFWriteStreamScheduleWithRunLoop(writeStream, CFRunLoopGetCurrent(), kCFRunLoopDefaultMode);
// Open both streams
if ( ! CFReadStreamOpen(readStream) || ! CFWriteStreamOpen(writeStream))
// close the connection
return NO;
return YES;
// call back method for reading
void readStreamEventHandler(CFReadStreamRef stream,CFStreamEventType eventType, void *info)
Connection* connection = (Connection*)info;
[connection readStreamHandleEvent:eventType];
// call back method for writing
void writeStreamEventHandler(CFWriteStreamRef stream, CFStreamEventType eventType, void *info)
Connection* connection = (Connection*)info;
[connection writeStreamHandleEvent:eventType];
`
As above, I have used
CFReadStreamSetProperty(readStream, kCFStreamPropertySocketSecurityLevel, kCFStreamSocketSecurityLevelSSLv3);
CFWriteStreamSetProperty(writeStream, kCFStreamPropertySocketSecurityLevel, kCFStreamSocketSecurityLevelSSLv3);
in order to make a secured connection using sockets.
The url i am using is in the format "ssl://some domain.com"
But in my call back method i am always getting only kCFStreamEventErrorOccurred for CFStreamEventType .
I also tried with the url "https://some domain.com" ,but getting the same error.
i also commented out setting kCFStreamPropertySocketSecurityLevel, but still i am receiving the same error that i mentioned above.
I dont know how it returns the same error. I have followed the api's and docs , but they mentioned the same way of creating a connection as i had given above.
I tried to get the error using the following code :
CFStreamError error = CFWriteStreamGetError(writeStream);
CFStreamErrorDomain errDomain = error.domain;
SInt32 errCode = error.error;
The value for errCode is 61 and errDomain is kCFStreamErrorDomainPOSIX. so i checked out the "errno.h", it specifies errCode as "Connection refused"
I need a help to fix this issue.
If the above code is not the right one,
**(i)how to create a TCP connection with SSL/TLS with the server.**
**(ii)How the url format should be(i.e its "ssl://" or "https://").**
**(iii)If my above code is correct where lies the error.**
I hope the server is working properly. Because I can able to communicate with the server and get the datas properly using BlackBerry and android phones. They have used SecuredConnection api's built in java. Their url format is "ssl://" and also using the same port number that i have used in my code.
Any help would be greatly appreciated.
Regards,
Mohammed Sadiq.

Answer 1

Hello Naxito. Welcome to the Apple Discussions!
Try the following ...
Perform a "factory default" reset of the AX
o (ref: http://docs.info.apple.com/article.html?artnum=108044)
Setup the AX
Connect to the AX's wireless network, and then, using the AirPort Admin Utility, try these settings:
AirPort tab
o Base Station Name: <whatever you wish or use the default>
o AirPort Network Name: <whatever you wish or use the default>
o Create a closed network (unchecked)
o Wireless Security: Not enabled
o Channel: Automatic
o Mode: 802.11b/g Compatible
Internet tab
o Connect Using: Ethernet
o Configure: Manually
o IP address: <Enter your college-provided IP address>
o Subnet mask: <Enter your college-provided subnet mask IP address>
o Router address: <Enter your college-provided router IP address>
o DNS servers: <Enter your college-provided DNS server(s)
o WAN Ethernet Port: Automatic
<b>Network tab
o Distribute IP addresses (checked)
o Share a single IP address (using DHCP & NAT) (enabled)