Node / ReticulumProjects / MeshChatX.git / files / meshchatx / src / backend / reticulum_pathfinding.py

Displaying Raw • Download

T8b949e# SPDX-License-Identifier: 0BSD

Tff7b72import T7ee787asyncio

Tff7b72import T7ee787contextlib

Tff7b72import T7ee787time

Tff7b72from T7ee787dataclasses Tff7b72import Te6edf3dataclass

Tff7b72from T7ee787typing Tff7b72import Te6edf3AnyTb4b4b4, Te6edf3OptionalTb4b4b4, Te6edf3Protocol

Tff7b72import T7ee787RNS

Tf0883e@dataclassTb4b4b4(Te6edf3frozenTff7b72=Tff7b72TrueTb4b4b4)

Tff7b72class T56d364OutboundPathOutcomeTb4b4b4:

T8b949e"""Result of waiting for a Reticulum transport path before outbound LXMF."""

Te6edf3path_availableTb4b4b4: Tffa657bool

Te6edf3prepare_measureTb4b4b4: Tffa657str

Te6edf3used_nudgeTb4b4b4: Tffa657bool

Tff7b72def Td2a8ffformat_outbound_path_finding_measureTb4b4b4(Te6edf3outcomeTb4b4b4: Te6edf3OutboundPathOutcomeTb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:

T8b949e"""Single string for storage/API: base measure, plus ``+nudge`` if a nudge was used."""

Te6edf3base Tff7b72= Te6edf3outcomeTff7b72.Td2a8ffprepare_measure

Tff7b72if Te6edf3outcomeTff7b72.Td2a8ffused_nudgeTb4b4b4:

Tff7b72return Ta5d6fffTa5d6ff"Tffd700{Te6edf3baseTffd700}Ta5d6ff+nudgeTa5d6ff"

Tff7b72return Te6edf3base

Te6edf3IDX_PT_TIMESTAMP Tff7b72= T79c0ff0

Te6edf3IDX_PT_RVCD_IF Tff7b72= T79c0ff5

Tff7b72def Td2a8ff_path_table_entry_is_expired_by_reticulum_rulesTb4b4b4(Te6edf3entryTb4b4b4) Tff7b72-Tff7b72> Tffa657boolTb4b4b4:

Te6edf3ts Tff7b72= Te6edf3entryTb4b4b4[Te6edf3IDX_PT_TIMESTAMPTb4b4b4]

Te6edf3attached Tff7b72= Te6edf3entryTb4b4b4[Te6edf3IDX_PT_RVCD_IFTb4b4b4]

Tff7b72if Te6edf3attached Tff7b72is Tff7b72not Tff7b72None Tff7b72and Tffa657hasattrTb4b4b4(Te6edf3attachedTb4b4b4, Ta5d6ff"Ta5d6ffmodeTa5d6ff"Tb4b4b4)Tb4b4b4:

Te6edf3iface Tff7b72= Te6edf3RNSTff7b72.Td2a8ffInterfacesTff7b72.Td2a8ffInterfaceTff7b72.Td2a8ffInterface

Tff7b72if Te6edf3attachedTff7b72.Td2a8ffmode Tff7b72== Te6edf3ifaceTff7b72.Td2a8ffMODE_ACCESS_POINTTb4b4b4:

Te6edf3dest_exp Tff7b72= Te6edf3ts Tff7b72+ Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffAP_PATH_TIME

Tff7b72elif Te6edf3attachedTff7b72.Td2a8ffmode Tff7b72== Te6edf3ifaceTff7b72.Td2a8ffMODE_ROAMINGTb4b4b4:

Te6edf3dest_exp Tff7b72= Te6edf3ts Tff7b72+ Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffROAMING_PATH_TIME

Tff7b72elseTb4b4b4:

Te6edf3dest_exp Tff7b72= Te6edf3ts Tff7b72+ Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffDESTINATION_TIMEOUT

Tff7b72elseTb4b4b4:

Te6edf3dest_exp Tff7b72= Te6edf3ts Tff7b72+ Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffDESTINATION_TIMEOUT

Tff7b72return Te6edf3timeTff7b72.Td2a8fftimeTb4b4b4(Tb4b4b4) Tff7b72> Te6edf3dest_exp

Tff7b72def Td2a8fftransport_path_table_entry_is_expiredTb4b4b4(Te6edf3destination_hashTb4b4b4: Tffa657bytesTb4b4b4) Tff7b72-Tff7b72> Tffa657boolTb4b4b4:

Tff7b72with Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffpath_table_lockTb4b4b4:

Tff7b72if Te6edf3destination_hash Tff7b72not Tff7b72in Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffpath_tableTb4b4b4:

Tff7b72return Tff7b72True

Te6edf3entry Tff7b72= Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffpath_tableTb4b4b4[Te6edf3destination_hashTb4b4b4]

Tff7b72return Te6edf3_path_table_entry_is_expired_by_reticulum_rulesTb4b4b4(Te6edf3entryTb4b4b4)

Tff7b72def Td2a8ffshould_rediscover_pathTb4b4b4(Te6edf3destination_hashTb4b4b4: Tffa657bytesTb4b4b4) Tff7b72-Tff7b72> Tffa657boolTb4b4b4:

Tff7b72if Tff7b72not Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)Tb4b4b4:

Tff7b72return Tff7b72True

Tff7b72if Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffpath_is_unresponsiveTb4b4b4(Te6edf3destination_hashTb4b4b4)Tb4b4b4:

Tff7b72return Tff7b72True

Tff7b72return Te6edf3transport_path_table_entry_is_expiredTb4b4b4(Te6edf3destination_hashTb4b4b4)

Tff7b72def Td2a8ffpath_metadata_for_apiTb4b4b4(Te6edf3destination_hashTb4b4b4: Tffa657bytesTb4b4b4) Tff7b72-Tff7b72> Tffa657dictTb4b4b4[Tffa657strTb4b4b4, Tffa657boolTb4b4b4]Tb4b4b4:

Te6edf3has Tff7b72= Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)

Tff7b72if Tff7b72not Te6edf3hasTb4b4b4:

Tff7b72return Tb4b4b4{

Ta5d6ff"Ta5d6ffpath_staleTa5d6ff"Tb4b4b4: Tff7b72TrueTb4b4b4,

Ta5d6ff"Ta5d6ffpath_unresponsiveTa5d6ff"Tb4b4b4: Tff7b72FalseTb4b4b4,

Tb4b4b4}

Tff7b72return Tb4b4b4{

Ta5d6ff"Ta5d6ffpath_staleTa5d6ff"Tb4b4b4: Te6edf3transport_path_table_entry_is_expiredTb4b4b4(Te6edf3destination_hashTb4b4b4)Tb4b4b4,

Ta5d6ff"Ta5d6ffpath_unresponsiveTa5d6ff"Tb4b4b4: Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffpath_is_unresponsiveTb4b4b4(Te6edf3destination_hashTb4b4b4)Tb4b4b4,

Tb4b4b4}

Tff7b72def Td2a8ffprepare_fresh_path_requestTb4b4b4(

Te6edf3reticulumTb4b4b4: Te6edf3OptionalTb4b4b4[Ta5d6ff"Ta5d6ffReticulumLikeTa5d6ff"Tb4b4b4]Tb4b4b4, Te6edf3destination_hashTb4b4b4: Tffa657bytes

Tb4b4b4) Tff7b72-Tff7b72> Tffa657strTb4b4b4:

T8b949e"""Ensure a path request is in flight if needed.

Returns a stable label for what was done before waiting:

``reused_valid_path`` (no new request), ``path_refresh_requested`` (dropped

or expired then requested), or ``new_path_requested`` (no prior path).

"""

Tff7b72if Tff7b72not Te6edf3should_rediscover_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)Tb4b4b4:

Tff7b72return Ta5d6ff"Ta5d6ffreused_valid_pathTa5d6ff"

Te6edf3had_path Tff7b72= Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)

Tff7b72if Te6edf3had_pathTb4b4b4:

Tff7b72if Te6edf3reticulum Tff7b72is Tff7b72not Tff7b72NoneTb4b4b4:

Tff7b72with Te6edf3contextlibTff7b72.Td2a8ffsuppressTb4b4b4(Tf85149ExceptionTb4b4b4)Tb4b4b4:

Te6edf3reticulumTff7b72.Td2a8ffdrop_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)

Tff7b72elseTb4b4b4:

Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffexpire_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)

Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffrequest_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)

Tff7b72return Ta5d6ff"Ta5d6ffpath_refresh_requestedTa5d6ff" Tff7b72if Te6edf3had_path Tff7b72else Ta5d6ff"Ta5d6ffnew_path_requestedTa5d6ff"

Tff7b72def Td2a8ffnudge_path_requestTb4b4b4(Te6edf3destination_hashTb4b4b4: Tffa657bytesTb4b4b4) Tff7b72-Tff7b72> Tff7b72NoneTb4b4b4:

Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffrequest_pathTb4b4b4(Te6edf3destination_hashTb4b4b4)

Tff7b72def Td2a8fflxmf_path_wait_cap_secondsTb4b4b4(Tb4b4b4) Tff7b72-Tff7b72> Tffa657floatTb4b4b4:

Tff7b72tryTb4b4b4:

Te6edf3base Tff7b72= Tffa657floatTb4b4b4(Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffPATH_REQUEST_TIMEOUTTb4b4b4)

Tff7b72except Tf85149ExceptionTb4b4b4:

Te6edf3base Tff7b72= T79c0ff30.0

Tff7b72return Tffa657maxTb4b4b4(T79c0ff30.0Tb4b4b4, Tffa657minTb4b4b4(Te6edf3baseTb4b4b4, T79c0ff120.0Tb4b4b4)Tb4b4b4)

Tff7b72async Tff7b72def Td2a8ffawait_transport_path_for_outbound_lxmfTb4b4b4(

Te6edf3reticulumTb4b4b4: Te6edf3OptionalTb4b4b4[Ta5d6ff"Ta5d6ffReticulumLikeTa5d6ff"Tb4b4b4]Tb4b4b4,

Te6edf3destination_hash_bytesTb4b4b4: Tffa657bytesTb4b4b4,

Tb4b4b4) Tff7b72-Tff7b72> Te6edf3OutboundPathOutcomeTb4b4b4:

Te6edf3long_w Tff7b72= Te6edf3lxmf_path_wait_cap_secondsTb4b4b4(Tb4b4b4)

Te6edf3short_w Tff7b72= Tffa657maxTb4b4b4(T79c0ff15.0Tb4b4b4, Te6edf3long_w Tff7b72* T79c0ff0.5Tb4b4b4)

Te6edf3measure Tff7b72= Te6edf3prepare_fresh_path_requestTb4b4b4(Te6edf3reticulumTb4b4b4, Te6edf3destination_hash_bytesTb4b4b4)

Te6edf3deadline Tff7b72= Te6edf3timeTff7b72.Td2a8fftimeTb4b4b4(Tb4b4b4) Tff7b72+ Te6edf3long_w

Tff7b72while Tff7b72not Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3destination_hash_bytesTb4b4b4) Tff7b72and Te6edf3timeTff7b72.Td2a8fftimeTb4b4b4(Tb4b4b4) Tff7b72< Te6edf3deadlineTb4b4b4:

Tff7b72await Te6edf3asyncioTff7b72.Td2a8ffsleepTb4b4b4(T79c0ff0.1Tb4b4b4)

Tff7b72if Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3destination_hash_bytesTb4b4b4)Tb4b4b4:

Tff7b72return Te6edf3OutboundPathOutcomeTb4b4b4(Tff7b72TrueTb4b4b4, Te6edf3measureTb4b4b4, Tff7b72FalseTb4b4b4)

Te6edf3nudge_path_requestTb4b4b4(Te6edf3destination_hash_bytesTb4b4b4)

Te6edf3deadline Tff7b72= Te6edf3timeTff7b72.Td2a8fftimeTb4b4b4(Tb4b4b4) Tff7b72+ Te6edf3short_w

Tff7b72while Tff7b72not Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3destination_hash_bytesTb4b4b4) Tff7b72and Te6edf3timeTff7b72.Td2a8fftimeTb4b4b4(Tb4b4b4) Tff7b72< Te6edf3deadlineTb4b4b4:

Tff7b72await Te6edf3asyncioTff7b72.Td2a8ffsleepTb4b4b4(T79c0ff0.1Tb4b4b4)

Te6edf3ok Tff7b72= Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3destination_hash_bytesTb4b4b4)

Tff7b72return Te6edf3OutboundPathOutcomeTb4b4b4(Te6edf3okTb4b4b4, Te6edf3measureTb4b4b4, Tff7b72TrueTb4b4b4)

Tff7b72class T56d364ReticulumLikeTb4b4b4(Te6edf3ProtocolTb4b4b4)Tb4b4b4:

Tff7b72def Td2a8ffdrop_pathTb4b4b4(Tff7b72selfTb4b4b4, Te6edf3destinationTb4b4b4) Tff7b72-Tff7b72> Te6edf3AnyTb4b4b4: Tff7b72.Tff7b72.Tff7b72.

Tff7b72async Tff7b72def Td2a8ffwait_for_pathTb4b4b4(

Te6edf3reticulumTb4b4b4: Te6edf3OptionalTb4b4b4[Ta5d6ff"Ta5d6ffReticulumLikeTa5d6ff"Tb4b4b4]Tb4b4b4,

Te6edf3dest_hashTb4b4b4: Tffa657bytesTb4b4b4,

Te6edf3path_wait_timeout_secondsTb4b4b4: Tffa657floatTb4b4b4,

Te6edf3poll_intervalTb4b4b4: Tffa657float Tff7b72= T79c0ff0.1Tb4b4b4,

Tb4b4b4) Tff7b72-Tff7b72> Tffa657boolTb4b4b4:

Te6edf3prepare_fresh_path_requestTb4b4b4(Te6edf3reticulumTb4b4b4, Te6edf3dest_hashTb4b4b4)

Te6edf3deadline Tff7b72= Te6edf3timeTff7b72.Td2a8ffmonotonicTb4b4b4(Tb4b4b4) Tff7b72+ Te6edf3path_wait_timeout_seconds

Tff7b72while Te6edf3timeTff7b72.Td2a8ffmonotonicTb4b4b4(Tb4b4b4) Tff7b72< Te6edf3deadlineTb4b4b4:

Tff7b72if Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3dest_hashTb4b4b4)Tb4b4b4:

Tff7b72return Tff7b72True

Tff7b72await Te6edf3asyncioTff7b72.Td2a8ffsleepTb4b4b4(Te6edf3poll_intervalTb4b4b4)

Tff7b72return Te6edf3RNSTff7b72.Td2a8ffTransportTff7b72.Td2a8ffhas_pathTb4b4b4(Te6edf3dest_hashTb4b4b4)