pub fn new_dcid(
        &mut self, cid: ConnectionId<'static>, seq: u64, reset_token: u128,
        retire_prior_to: u64,
    ) -> Result<Vec<(u64, usize)>> {
        if self.zero_length_dcid {
            return Err(Error::InvalidState);
        }

        let mut retired_path_ids = Vec::new();
        // If an endpoint receives a NEW_CONNECTION_ID frame that repeats a
        // previously issued connection ID with a different Stateless Reset
        // Token field value or a different Sequence Number field value, or if a
        // sequence number is used for different connection IDs, the endpoint
        // MAY treat that receipt as a connection error of type
        // PROTOCOL_VIOLATION.
        if let Some(e) = self.dcids.iter().find(|e| e.cid == cid || e.seq == seq)
        {
            if e.cid != cid || e.seq != seq || e.reset_token != Some(reset_token)
            {
                return Err(Error::InvalidFrame);
            }
            // The identifier is already there, nothing to do.
            return Ok(retired_path_ids);
        }

        // The value in the Retire Prior To field MUST be less than or equal to
        // the value in the Sequence Number field. Receiving a value in the
        // Retire Prior To field that is greater than that in the Sequence
        // Number field MUST be treated as a connection error of type
        // FRAME_ENCODING_ERROR.
        if retire_prior_to > seq {
            return Err(Error::InvalidFrame);
        }

        // An endpoint that receives a NEW_CONNECTION_ID frame with a sequence
        // number smaller than the Retire Prior To field of a previously
        // received NEW_CONNECTION_ID frame MUST send a corresponding
        // RETIRE_CONNECTION_ID frame that retires the newly received connection
        // ID, unless it has already done so for that sequence number.
        if seq < self.largest_peer_retire_prior_to &&
            !self.retire_dcid_seqs.contains(&seq)
        {
            self.retire_dcid_seqs.push_back(seq);
            return Ok(retired_path_ids);
        }

        if seq > self.largest_destination_seq {
            self.largest_destination_seq = seq;
        }

        let new_entry = ConnectionIdEntry {
            cid: cid.clone(),
            seq,
            reset_token: Some(reset_token),
            path_id: None,
        };

        // A receiver MUST ignore any Retire Prior To fields that do not
        // increase the largest received Retire Prior To value.
        //
        // After processing a NEW_CONNECTION_ID frame and adding and retiring
        // active connection IDs, if the number of active connection IDs exceeds
        // the value advertised in its active_connection_id_limit transport
        // parameter, an endpoint MUST close the connection with an error of type
        // CONNECTION_ID_LIMIT_ERROR.
        if retire_prior_to > self.largest_peer_retire_prior_to {
            let retired = &mut self.retire_dcid_seqs;
            self.dcids.remove_lower_than_and_insert(
                retire_prior_to,
                new_entry,
                |e| {
                    retired.push_back(e.seq);

                    if let Some(pid) = e.path_id {
                        retired_path_ids.push((e.seq, pid));
                    }
                },
            )?;
            self.largest_peer_retire_prior_to = retire_prior_to;
        } else {
            self.dcids.insert(new_entry)?;
        }

        Ok(retired_path_ids)
    }
/// Adds a new Destination Connection ID (originating from a
/// NEW_CONNECTION_ID frame) and process all its related metadata.
///
/// Returns an error if the provided Connection ID or its metadata are
/// invalid.
///
/// Returns a list of tuples (DCID sequence number, Path ID), containing the
/// sequence number of retired DCIDs that were linked to their respective
/// Path ID.
Adds a new Destination Connection ID (originating from a
NEW_CONNECTION_ID frame) and process all its related metadata.

Returns an error if the provided Connection ID or its metadata are
invalid.

Returns a list of tuples (DCID sequence number, Path ID), containing the
sequence number of retired DCIDs that were linked to their respective
Path ID.
Adds a new Destination Connection ID ( originating from a NEW_CONNECTION_ID frame ) and process all its related metadata . Returns an error if the provided Connection ID or its metadata are invalid . Returns a list of tuples ( DCID sequence number Path ID ) containing the sequence number of retired DCIDs that were linked to their respective Path ID .
pub fn new_dcid(
        &mut self, cid: ConnectionId<'static>, seq: u64, reset_token: u128,
        retire_prior_to: u64,
    ) -> Result<Vec<(u64, usize)>> {
        if self.zero_length_dcid {
            return Err(Error::InvalidState);
        }
        let mut retired_path_ids = Vec::new();
        // If an endpoint receives a NEW_CONNECTION_ID frame that repeats a
        // previously issued connection ID with a different Stateless Reset
        // Token field value or a different Sequence Number field value, or if a
        // sequence number is used for different connection IDs, the endpoint
        // MAY treat that receipt as a connection error of type
        // PROTOCOL_VIOLATION.
        if let Some(e) = self.dcids.iter().find(|e| e.cid == cid || e.seq == seq)
        {
            if e.cid != cid || e.seq != seq || e.reset_token != Some(reset_token)
            {
                return Err(Error::InvalidFrame);
            }
            // The identifier is already there, nothing to do.
            return Ok(retired_path_ids);
        }
        // The value in the Retire Prior To field MUST be less than or equal to
        // the value in the Sequence Number field. Receiving a value in the
        // Retire Prior To field that is greater than that in the Sequence
        // Number field MUST be treated as a connection error of type
        // FRAME_ENCODING_ERROR.
        if retire_prior_to > seq {
            return Err(Error::InvalidFrame);
        }
        // An endpoint that receives a NEW_CONNECTION_ID frame with a sequence
        // number smaller than the Retire Prior To field of a previously
        // received NEW_CONNECTION_ID frame MUST send a corresponding
        // RETIRE_CONNECTION_ID frame that retires the newly received connection
        // ID, unless it has already done so for that sequence number.
        if seq < self.largest_peer_retire_prior_to &&
            !self.retire_dcid_seqs.contains(&seq)
        {
            self.retire_dcid_seqs.push_back(seq);
            return Ok(retired_path_ids);
        }
        if seq > self.largest_destination_seq {
            self.largest_destination_seq = seq;
        }
        let new_entry = ConnectionIdEntry {
            cid: cid.clone(),
            seq,
            reset_token: Some(reset_token),
            path_id: None,
        };
        // A receiver MUST ignore any Retire Prior To fields that do not
        // increase the largest received Retire Prior To value.
        //
        // After processing a NEW_CONNECTION_ID frame and adding and retiring
        // active connection IDs, if the number of active connection IDs exceeds
        // the value advertised in its active_connection_id_limit transport
        // parameter, an endpoint MUST close the connection with an error of type
        // CONNECTION_ID_LIMIT_ERROR.
        if retire_prior_to > self.largest_peer_retire_prior_to {
            let retired = &mut self.retire_dcid_seqs;
            self.dcids.remove_lower_than_and_insert(
                retire_prior_to,
                new_entry,
                |e| {
                    retired.push_back(e.seq);
                    if let Some(pid) = e.path_id {
                        retired_path_ids.push((e.seq, pid));
                    }
                },
            )?;
            self.largest_peer_retire_prior_to = retire_prior_to;
        } else {
            self.dcids.insert(new_entry)?;
        }
        Ok(retired_path_ids)
    }
pub fn new_dcid ( & mut self , cid : ConnectionId < ' static > , seq : u64 , reset_token : u128 , retire_prior_to : u64 , ) -> Result < Vec < ( u64 , usize ) > > { if self . zero_length_dcid { return Err ( Error :: InvalidState ) ; } let mut retired_path_ids = Vec :: new ( ) ; // If an endpoint receives a NEW_CONNECTION_ID frame that repeats a // previously issued connection ID with a different Stateless Reset // Token field value or a different Sequence Number field value, or if a // sequence number is used for different connection IDs, the endpoint // MAY treat that receipt as a connection error of type // PROTOCOL_VIOLATION. if let Some ( e ) = self . dcids . iter ( ) . find ( | e | e . cid == cid || e . seq == seq ) { if e . cid != cid || e . seq != seq || e . reset_token != Some ( reset_token ) { return Err ( Error :: InvalidFrame ) ; } // The identifier is already there, nothing to do. return Ok ( retired_path_ids ) ; } // The value in the Retire Prior To field MUST be less than or equal to // the value in the Sequence Number field. Receiving a value in the // Retire Prior To field that is greater than that in the Sequence // Number field MUST be treated as a connection error of type // FRAME_ENCODING_ERROR. if retire_prior_to > seq { return Err ( Error :: InvalidFrame ) ; } // An endpoint that receives a NEW_CONNECTION_ID frame with a sequence // number smaller than the Retire Prior To field of a previously // received NEW_CONNECTION_ID frame MUST send a corresponding // RETIRE_CONNECTION_ID frame that retires the newly received connection // ID, unless it has already done so for that sequence number. if seq < self . largest_peer_retire_prior_to && ! self . retire_dcid_seqs . contains ( & seq ) { self . retire_dcid_seqs . push_back ( seq ) ; return Ok ( retired_path_ids ) ; } if seq > self . largest_destination_seq { self . largest_destination_seq = seq ; } let new_entry = ConnectionIdEntry { cid : cid . clone ( ) , seq , reset_token : Some ( reset_token ) , path_id : None , } ; // A receiver MUST ignore any Retire Prior To fields that do not // increase the largest received Retire Prior To value. // // After processing a NEW_CONNECTION_ID frame and adding and retiring // active connection IDs, if the number of active connection IDs exceeds // the value advertised in its active_connection_id_limit transport // parameter, an endpoint MUST close the connection with an error of type // CONNECTION_ID_LIMIT_ERROR. if retire_prior_to > self . largest_peer_retire_prior_to { let retired = & mut self . retire_dcid_seqs ; self . dcids . remove_lower_than_and_insert ( retire_prior_to , new_entry , | e | { retired . push_back ( e . seq ) ; if let Some ( pid ) = e . path_id { retired_path_ids . push ( ( e . seq , pid ) ) ; } } , ) ? ; self . largest_peer_retire_prior_to = retire_prior_to ; } else { self . dcids . insert ( new_entry ) ? ; } Ok ( retired_path_ids ) }
Adds a new Destination Connection ID (originating from a
NEW_CONNECTION_ID frame) and process all its related metadata.
Adds a new Destination Connection ID ( originating from a NEW_CONNECTION_ID frame ) and process all its related metadata .
&mut self
cid
ConnectionId<'static>
seq
u64
reset_token
u128
retire_prior_to
u64
&mut self
cid
ConnectionId<'static>
seq
u64
reset_token
u128
retire_prior_to
u64