org.restcomm.media.sdp.fields

Class AttributeField

java.lang.Object

org.restcomm.media.sdp.fields.AttributeField

All Implemented Interfaces:

SdpField

Direct Known Subclasses:

AbstractConnectionModeAttribute, CandidateAttribute, FingerprintAttribute, FormatParameterAttribute, GenericAttribute, IceLiteAttribute, IcePwdAttribute, IceUfragAttribute, MaxPacketTimeAttribute, PacketTimeAttribute, RtcpAttribute, RtcpMuxAttribute, RtpMapAttribute, SetupAttribute, SsrcAttribute

public class AttributeField
extends Object
implements SdpField

a=[attribute]
a=[attribute]:[value]

Attributes are the primary means for extending SDP.
Attributes may be defined to be used as "session-level" attributes, "media-level" attributes, or both.

A media description may have any number of attributes ("a=" fields) that are media specific. These are referred to as "media-level" attributes and add information about the media stream. Attribute fields can also be added before the first media field; these "session-level" attributes convey additional information that applies to the conference as a whole rather than to individual media.

Attribute fields may be of two forms:

• A property attribute is simply of the form "a=". These are binary attributes, and the presence of the attribute conveys that the attribute is a property of the session. An example might be "a=recvonly".
• A value attribute is of the form "a=:". For example, a whiteboard could have the value attribute "a=orient: landscape"

Author:

Henrique Rosa (henrique.rosa@telestax.com)

Field Summary

Fields

Modifier and Type	Field and Description
static String	ATTRIBUTE_SEPARATOR
protected static String	BEGIN
protected static int	BEGIN_LENGTH
protected StringBuilder	builder
static char	FIELD_TYPE
protected String	key
protected String	value

Fields inherited from interface org.restcomm.media.sdp.SdpField

FIELD_SEPARATOR

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AttributeField()
protected	AttributeField(String key)
protected	AttributeField(String key, String value)

Method Summary

Methods

Modifier and Type	Method and Description
char	getFieldType() Gets the type of the field
String	getKey()
String	getValue()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

ATTRIBUTE_SEPARATOR

public static final String ATTRIBUTE_SEPARATOR

See Also:

Constant Field Values

FIELD_TYPE

public static final char FIELD_TYPE

See Also:

Constant Field Values

BEGIN

protected static final String BEGIN

See Also:

Constant Field Values

BEGIN_LENGTH

protected static final int BEGIN_LENGTH

builder

protected final StringBuilder builder

key

protected String key

value

protected String value

Constructor Detail

AttributeField

protected AttributeField()

AttributeField

protected AttributeField(String key,
              String value)

AttributeField

protected AttributeField(String key)

Method Detail

getKey

public String getKey()

getValue

public String getValue()

getFieldType

public char getFieldType()

Description copied from interface: SdpField

Gets the type of the field

Specified by:

getFieldType in interface SdpField

Returns:

the char that represents the field

toString

public String toString()

Overrides:

toString in class Object