class AsPath
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An AsPath is a list of AsSegments, each of which can be an AS_SET,
AS_CONFED_SET, AS_SEQUENCE, or an AS_CONFED_SEQUENCE. More... |
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Public Types
Public Methods
Protected Members
An AsPath is a list of AsSegments, each of which can be an AS_SET,
AS_CONFED_SET, AS_SEQUENCE, or an AS_CONFED_SEQUENCE.
| typedef list <AsSegment>::const_iterator const_iterator | const_iterator |
| typedef list <AsSegment>::iterator iterator | iterator |
Initialize from a string in the format
1,2,(3,4,5),6,7,8,(9,10,11),12,13
construct from received data
construct an aggregate from two AsPaths
AsPath (const AsPath &a)
| AsPath |
Copy constructor
void add_segment (const AsSegment& s)
| add_segment |
void prepend_segment (const AsSegment& s)
| prepend_segment |
size_t path_length ()
| path_length |
[const]
bool contains (const AsNum& as_num)
| contains |
[const]
const AsNum& first_asnum ()
| first_asnum |
[const]
[const]
string short_str ()
| short_str |
[const]
[const]
size_t num_segments ()
| num_segments |
[const]
const uint8_t * encode (size_t &len, uint8_t *buf)
| encode |
[const]
Convert from internal to external representation, with the
correct representation for the original AS_PATH attribute. If
there are any 4-byte AS numbers, they will be encoded as
AS_TRAN.
If we do not pass a buffer (buf = 0), then the routine will
allocate a new one; otherwise, len indicates the size of the
input buffer, which must be large enough to store the encoding.
Returns: the pointer to the buffer, len is the actual size.
size_t wire_size ()
| wire_size |
[const]
Returns: the size of the list on the wire.
XXX this should be made more efficient.
void prepend_as (const AsNum &asn)
| prepend_as |
Add the As number to the begining of the AS_SEQUENCE that starts
the As path, or if the AsPath starts with an AS_SET, then add a
new AS_SEQUENCE with the new AsNum to the start of the AsPath
void prepend_confed_as (const AsNum &asn)
| prepend_confed_as |
Add the As number to the begining of the AS_CONFED_SEQUENCE
that starts the As path, or if the AsPath does not start with
an AS_CONFED_SEQUENCE, then add a new AS_CONFED_SEQUENCE with
the new AsNum to the start of the AsPath
void remove_confed_segments ()
| remove_confed_segments |
remove all confederation segments from aspath
bool contains_confed_segments ()
| contains_confed_segments |
[const]
Returns: true if the AS_PATH Contains confederation segments.
bool operator== (const AsPath& him)
| operator== |
[const]
bool operator< (const AsPath& him)
| operator< |
[const]
void encode_for_mib (vector<uint8_t>& aspath)
| encode_for_mib |
[const]
bool two_byte_compatible ()
| two_byte_compatible |
[const]
returns true if the AS path does not lose information when
represented entirely as two-byte AS numbers
[protected]
| size_t _num_segments
| _num_segments |
[protected]
| size_t _path_len
| _path_len |
[protected]
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