BlackBerry network connectivity

Hello

I have problems intermittent attempt to download data in JSON format using http. I understand, much has been written about this issue, but anyone who has used below class to connect to HTTP?

http://www.sameernafdey.com/2009/08/HTTPConnection-over-bis-WAP-10-11-WAP.html

I tried above class for formatting my URL and it seems to help a little, because connections are not to be allowed to fall as well.

Here are the class-

/**
* NetworkUtils.java
*
* Note: This class is not originally written by myself. It is rather a
* updated the version of the open source of the alias of the application
* NetworkDiagnosticTool provided by RIM. Feel free to edit and use this
source code, but at your own risk. As I'm not the original author of this code,
* I'm not responsible for any problems if you use this source code.
*
* References:
* 1. NetworkDiagnostic tool: http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800451/800563/What_Is...
* 2. BlackBerry Technical Knowledge Base: http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/customview.html?func=...
* 3. BlackBerry Support Forum Post: http://supportforums.blackberry.com/rim/board/message?board.id=java_dev&message.id=29111
*/

import java.io.EOFException;
Import net.rim.device.api.servicebook.ServiceBook;
Import net.rim.device.api.servicebook.ServiceRecord;
Import net.rim.device.api.synchronization.ConverterUtilities;
Import net.rim.device.api.system.CoverageInfo;
Import net.rim.device.api.system.WLANInfo;
Import net.rim.device.api.util.DataBuffer;

/**
* NetworkUtils for Blackberry. This class provides utility functions for formatting
* URL HTTP and Socket connections in the platform Blackberry RIM who take advantage
* the ability of the device to connect to the internet using the SDM, BIS, WAP 1.0, 1.1
* WAP 2.0, unite, WiFi.
*
For more information about the options of connectivity etc. Please take a look at the
* great post in the Blackberry Support Forum here
Your BlackBerry - http connections and a connection in the world.
*
* @author Sameer najar
* @since August 21, 2009.
* [email protected]
*/
public final class NetworkUtils {}

/ * Stores carry ServiceBooks if found. Otherwise, null * /.
private ServiceRecord srMDS, srBIS, srWAP, srWAP2, srWiFi, srUnite;
/ * Indicators showing the status of each transport coverage * /.
Private boolean coverageTCP = false, coverageMDS = false, coverageBIS = false, coverageWAP = false, coverageWAP2 = false, coverageWiFi = false, coverageUnite = false;
/**
* Applies to WAP1.0 connection only.
* It is a flag to indicate if the WAP settings should be parsed from the full book.
* If the user provides any WAP on the InputScreen parameter, this flag is set to false.
* TODO currently, analysis of service book is not supported.
*/
Private boolean wapParametersUnavailable = true;
/**
* The constant CONFIG_TYPE_ which are used to find appropriate service books.
* TODO now that single unit is detected in this way.
*/
private static final int CONFIG_TYPE_WAP = 0;
private static final int CONFIG_TYPE_BES = 1;
private static final int CONFIG_TYPE_WIFI = 3;
private static final int CONFIG_TYPE_BIS = 4;
private static final int CONFIG_TYPE_WAP2 = 7;
private static final String UNITE_NAME = "unit";

public String formatURL (String httpBaseURL) {}
initializeTransportAvailability();

/**
* The rest of this method simply tries to communicate on different transport
* that are available. For each transport it retries 'attempts' several times if
* an attempt fails.
*/

/ * WiFi using HTTP * /.
If (srWiFi! = null & coverageWiFi) {}
System.out.println ("WiFi (HTTP)" ");
Return getWiFiURL (httpBaseURL);
} else {}
If (srWiFi == null) {}
System.out.println ("No WiFi service found.");
}
If (! coverageWiFi) {}
System.out.println ("WiFi coverage is not available");
}
}

/ * Direct TCP using HTTP * /.
If {(coverageTCP)
System.out.println ("Direct TCP (HTTP)" ");
Return getTCPURL (httpBaseURL);
}

/ * MDS using HTTP * /.
If (srMDS! = null & coverageMDS) {}
System.out.println ("MDS (HTTP)" ");
Return getMDSURL (httpBaseURL);
} else {}
If (srMDS == null) {}
System.out.println ("No. MDS service records found.");
}
If (! coverageMDS) {}
System.out.println ("coverage of SDM is not available");
}
}

/ * Unite using HTTP * /.
If (srUnite! = null & coverageUnite) {}
System.out.println ("unit (HTTP)" ");
Return getUniteURL (httpBaseURL);
} else {}
If (srUnite == null) {}
System.out.println ("No. Unit service records found.");
}
If (! coverageUnite) {}
System.out.println ("unit cover is not available");
}
}

/ * BIS-B using HTTP * /.
If (srBIS! = null & coverageBIS) {}
System.out.println ("BIS-B (HTTP)" ");
Return getBISURL (httpBaseURL);
} else {}
If (srBIS == null) {}
System.out.println ("No BIS - B service records found.");
}
If (! coverageBIS) {}
System.out.println ("BIS-B coverage is not available");
}
}

/ * WAP1.0 usign HTTP * /.
getWAPURL (httpBaseURL);
If (srWAP! = null &! wapParametersUnavailable & coverageWAP) {}
System.out.println ("WAP (HTTP)" ");
Return getWAPURL (httpBaseURL);
} else {}
If (srWAP == null) {}
System.out.println ("No WAP service records found.");
}
If (! coverageWAP) {}
System.out.println ("WAP coverage is not available");
}
If {(wapParametersUnavailable)
System.out.println ("enter the WAP settings");
}
}

/ * WAP2.0 using HTTP * /.
If (srWAP2! = null & coverageWAP2) {}
System.out.println ("WAP2 (HTTP)" ");
Return getWAP2URL (httpBaseURL);
} else {}
If (srWAP2 == null) {}
System.out.println ("No WAP2 service records found.");
}
If (! coverageWAP2) {}
System.out.println ("WAP2 coverage is not available");
}
}

Return httpBaseURL;
}

/**
* Initializes the ServiceRecord instances for each transport (if available). Otherwise makes null.
* Also determines if sufficient coverage is available for each transport and sets coverage indicators.
*/
private void initializeTransportAvailability() {}
Full book sb = ServiceBook.getSB ();
Reviews [] ServiceRecord = sb.getRecords ();

for (int i = 0; i)< records.length;="">
{
MyRecord = documents [i] ServiceRecord;
String cid, uid;

If (myRecord.isValid () &! myRecord.isDisabled ()) {}
CID = myRecord.getCid () .toLowerCase ();
UID = myRecord.getUid () .toLowerCase ();
BIS
If (cid.indexOf ("ippp")! = - 1 & uid.indexOf ("gpmds")! = - 1) {}
srBIS = myRecord;
}

BES
If (cid.indexOf ("ippp")! = - 1 & uid.indexOf ("gpmds") ==-1) {}
srMDS = myRecord;
}
WiFi
If (cid.indexOf ("wptcp")! = - 1 & uid.indexOf ("wifi")! = - 1) {}
srWiFi = myRecord;
}
Wap1.0
{If (getConfigType (myRecord) == CONFIG_TYPE_WAP & {cid.equalsIgnoreCase ("wap"))}
srWAP = myRecord;
}
Wap2.0
If (cid.indexOf ("wptcp")! = - 1 & uid.indexOf ("wifi") ==-1 & uid.indexOf ("mms") ==-1) {}
srWAP2 = myRecord;
}
Unite
{If (getConfigType (myRecord) == CONFIG_TYPE_BES & {myRecord.getName () .equals (UNITE_NAME))}
srUnite = myRecord;
}
}
}
If (CoverageInfo.isCoverageSufficient (CoverageInfo.COVERAGE_BIS_B)) {}
coverageBIS = true;
System.out.println ("State of coverage: BIS-B - online").
}
If (CoverageInfo.isCoverageSufficient (CoverageInfo.COVERAGE_DIRECT)) {}
coverageTCP = true;
System.out.println ("State of coverage: COVERAGE_DIRECT - online").
coverageWAP = true;
System.out.println ("State of coverage: WAP 1.0, 1.1 - online").
coverageWAP2 = true;
System.out.println ("State of coverage: WAP 2.0 - online").
}
If (CoverageInfo.isCoverageSufficient (CoverageInfo.COVERAGE_MDS)) {}
coverageMDS = true;
System.out.println ("State of coverage: MDS - online").
coverageUnite = true;
System.out.println ("State of coverage: unit - online").
}

If (WLANInfo.getWLANState () == WLANInfo.WLAN_STATE_CONNECTED) {}
coverageWiFi = true;
System.out.println ("State of coverage: Wifi - online").
}
}

/**
* Gets the type of a ServiceRecord config with getDataInt below
@param record A ServiceRecord
* @return the ServiceRecord configType
*/
private int getConfigType (file ServiceRecord) {}
return getDataInt (balance, 12);
}

/**
* Gets the type of a ServiceRecord config. From 12 as a type returns the configType.
@param record A ServiceRecord
@param type dataType
* @return configType
*/
private int getDataInt (ServiceRecord Records, int type) {}
DataBuffer buffer = null;
buffer = getDataBuffer (type of record),

If (buffer! = null) {}
try {}
Return ConverterUtilities.readInt (buffer);
} catch (EOFException e) {}
Returns - 1;
}
}
Returns - 1;
}

/**
* Utility method to getDataInt()
*/
private DataBuffer getDataBuffer (ServiceRecord Records, int type) {}
data Byte [] = record.getApplicationData ();
If (data! = null) {}
DataBuffer buffer = new DataBuffer (data, 0, data.length, true);
try {}
buffer.readByte ();
} catch (EOFException e1) {}
Returns a null value.
}
If {(ConverterUtilities.findType (buffer, type))
return the buffer;
}
}
Returns a null value.
}

/**
Construction of a direct url TCP of the baseURL supplied by the user
* @return A url with direct TCP settings
*/
private String getTCPURL (String baseURL) {}
String url = baseURL + "; deviceside = true;
String AFN = ""; inputs.getEfTcpAPN ();
String username = ""; inputs.getEfTcpAPNUser ();
String password = ""; inputs.getEfTcpAPNPassword ();
If (apn.length () > 0) {}
URL += '; APN ="+ AFN;
}
If (username.length () > 0) {}
URL += '; TunnelAuthUsername ="+ username;
}
If (password.length () > 0) {}
URL += '; TunnelAuthPassword ="+ password;
}
Back to url;
}

/**
Construction of a url MDS of the baseURL supplied by the user
* @return A url with parameters MDS
*/
private String getMDSURL (String baseURL) {}
return baseURL + '; deviceside = false;
}

/**
Construction of a url of the unity of the baseURL supplied by the user
* @return A url with the parameters of the unit
*/
private String getUniteURL (String baseURL) {}
return baseURL + '; deviceside = false' + ";". " ConnectionUID ="+ srUnite.getUid ();
}

/**
Construction of a url BIS-B of the baseURL supplied by the user
* @return A url with parameters BIS-B
*/
private String getBISURL (String baseURL) {}
return baseURL + '; deviceside = false; Not implemented since it is only available for RIM ISV partners
}

/**
Construction of a url the baseURL user-provided WAP2.0
* @return A url with parameters WAP2.0
*/
private String getWAP2URL (String baseURL) {}
return baseURL + '; deviceside = true' + ";". " ConnectionUID ="+ srWAP2.getUid ();
}

/**
Construction of a url the baseURL user-provided WiFi
* @return A url with WiFi settings
*/
private String getWiFiURL (String baseURL) {}
return baseURL + '; interface = wifi. "
}

/**
Construction of a WAP1.0 url from the baseURL supplied by the user
* @return A url with parameters WAP1.0
*/
private String getWAPURL (String baseURL) {}
String url = baseURL + "; deviceside = true;
String gatewayIP = ""; inputs.getEfWapGatewayIP ();
String gatewayAPN = ""; inputs.getEfWapGatewayAPN ();
String gatewayPort = ""; inputs.getEfWapGatewayPort ();
String sourceIP = ""; inputs.getEfWapSourceIP ();
SourcePort string = ""; inputs.getEfWapSourcePort ();
String username = ""; inputs.getEfWapUser ();
String password = ""; inputs.getEfWapPassword ();
If (gatewayIP.length () > 0) {}
URL = url + ";". " WapGatewayIP =' + gatewayIP;
wapParametersUnavailable = false;
}
If (gatewayAPN.length () > 0) {}
URL = url + ";". " WapGatewayAPN ="+ gatewayAPN;
wapParametersUnavailable = false;
}
If (gatewayPort.length () > 0) {}
URL = url + ";". " WapGatewayPort ="+ gatewayPort;
wapParametersUnavailable = false;
}
If (sourceIP.length () > 0) {}
URL = url + ";". " WapSourceIP =' + sourceIP;
wapParametersUnavailable = false;
}
If (sourcePort.length () > 0) {}
URL = url + ";". " WapSourcePort =' + sourcePort;
wapParametersUnavailable = false;
}
If (username.length () > 0) {}
URL = url + ";". " TunnelAuthUsername ="+ username;
wapParametersUnavailable = false;
}
If (password.length () > 0) {}
URL = url + ";". " TunnelAuthPassword ="+ password;
wapParametersUnavailable = false;
}
/*
If (inputs.getCfWapEnableWTLS ()) {}
URL = url + ";". " WapEnableWTLS = true;
wapParametersUnavailable = false;
}*/
If (wapParametersUnavailable & srWAP! = null) {}
Back to url;
} / * Not implemented * /.
else {}
Back to url;
}
}
}

the code creates 'only' the correct one to use connection suffix, it does not take care to use them or close the connection.
Maybe your code does not correctly clean on the rise?

Tags: BlackBerry Developers

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