WAAS: TCP-Settings with ADSL

Hello,
it is recomanded to change the values of tcp-buffer, if the edge wae is connected with adsl?
download/upload: 6000/512 kBit/s.
Kind Regards

Volker,
It depends on the RTT latency. Buffers in 4.0 should only be changed when the bandwidth-delay product exceeds the default buffer allocation.
Zach

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Creating a TCP connection with SSL/TLS

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 )
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CFStreamCreatePairWithSocketToHost(kCFAllocatorDef ault, (CFStringRef)self.host, self.port, &readStream, &writeStream);
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// Make sure streams were created correctly
if ( readStream == nil || writeStream == nil )
[self close];
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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);
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CFReadStreamSetProperty(readStream, kCFStreamPropertySocketSecurityLevel, kCFStreamSocketSecurityLevelNegotiatedSSL);
CFWriteStreamSetProperty(writeStream, kCFStreamPropertySocketSecurityLevel, kCFStreamSocketSecurityLevelNegotiatedSSL);
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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);
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// Schedule streams with current run loop
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return NO;
return YES;
// call back method for reading
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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.

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WAAS: TCP-Settings with ADSL

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