Used to identify the client toward the server and to get the session challenge used to hash passwords into digests. The client can request a different version of the HTSP protocol with this method. If no 'hello' message is sent the server assumes latest version is to be used.
Client/Server should select lowest common version, if this is not possible connection should be terminated.
htspversion u32 required The server supports all versions of the protocol up to and including this number.
servername str required Server software name.
serverversion str required Server software version.
servercapability str[] required Server capabilities (Added in version 6)
challenge bin required 32 bytes randomized data used to generate authentication digests
webroot str optional Server HTTP webroot (Added in version 8)
Note: any access to TVH webserver should include this at start of URL path
Note: possible values for servercapability[]:
cwc Descrambling available
v4l Analogue TV available
linuxdvb Linux DVB API available
imagecache Image caching available
timeshift Timeshifting available (Added in version 9).
authenticate
This can be used to issue authentication without doing anything else.
If no privileges are gained it will return with 'noaccess' set to 1.
Request message fields:
None
Reply message fields:
noaccess u32 optional If set to 1, no privileges were granted.
time s64 required UNIX time.
timezone s32 required Hours west of GMT. (deprecated, does not work reliable, use gmtoffset instead)
gmtoffset s32 optional Minutes east of GMT.
enableAsyncMetadata
When this is enabled the client will get continuous updates from the server about added, update or deleted channels, tags, dvr and epg entries.
An interactive application that presents the user with information about these things should probably enable this and the implement the various server to client methods.
Request message fields:
epg u32 optional Set to 1, to include EPG data in async, implied by epgMaxTime (Added in version 6).
lastUpdate s64 optional Only provide metadata that has changed since this time (Added in version 6).
epgMaxTime s64 optional Maximum time to return EPG data up to (Added in version 6)
language str optional RFC 2616 compatible language list (Added in version 6)
Reply message fields:
None
Once the reply as been sent the initial data set will be provided, and then updates will arrive asynchronously after that. The initial data dump is sent using the following messages:
tagAdd optional
channelAdd optional
tagUpdate optional
dvrEntryAdd optional
eventAdd optional (Added in version 6)
initialSyncComplete required
Request information about a set of events. If no options are specified the entire EPG database will be returned.
Request message fields:
eventId u32 optional Event ID to begin from (Optional since version 6)
channelId u32 optional Channel ID to get data for (Added in version 6)
numFollowing u32 optional Number of events to add (Optional since version 6)
maxTime u64 optional Maximum time to return data up to (Added in version 6)
language str optional RFC 2616 compatible language list (Added in version 6)
Reply message fields:
events msg[] required List of events, using response message fields from eventAdd
epgQuery
(Added in version 4)
Query the EPG (event titles) and optionally restrict to channel/tag/content type.
Request message fields:
query str required Title regular expression to search for
channelId u32 optional [[ChannelId]] to restrict search to
tagId u32 optional [[TagId]] to restrict search to
contentType u32 optional DVB content type to restrict search to
minduration u32 optional Minimal duration in seconds (Added in version 13)
maxduration u32 optional Maximal duration in seconds (Added in version 13)
language str optional RFC 2616 compatible language list for title (Added in version 6)
full u32 optional Output full event list rather than just IDs
Reply message fields:
if full == 1
events msg[] optional List of events, using response message fields from eventAdd
else
eventIds u32[] optional List of eventIds that match the query
getEpgObject
Get detailed EPG Object info.
Request message fields:
id u32 required Object ID
type u32 optional Object type
Create a new DVR entry. Either eventId or channelId, start and stop must be specified.
Request message fields:
eventId u32 optional Event ID (Optional since version 5).
channelId u32 optional Channel ID (Added in version 5)
start s64 optional Time to start recording (Added in version 5)
stop s64 optional Time to stop recording (Added in version 5)
retention u32 optional Retention time in days (Added in version 13)
creator str optional Name of the event creator (Added in version 5, obsoleted in version 18 - applications are not allowed to change credential)
priority u32 optional Recording priority (Added in version 5)
startExtra s64 optional Pre-recording buffer in minutes (Added in version 5)
stopExtra s64 optional Post-recording buffer in minutes (Added in version 5)
title str optional Recording title, if no eventId (Added in version 6)
subtitle str optional Recording subtitle, if no eventId (Added in version 20)
description str optional Recording description, if no eventId (Added in version 5)
configName str optional DVR configuration name or UUID
enabled u32 optional Enabled flag (Added in version 23).
ageRating u32 optional Minimum age rating (Added in version 36).
comment str optional User Comment (Added in version 42).
Reply message fields:
success u32 required 1 if entry was added, 0 otherwise
id u32 optional ID of created DVR entry
error str optional English clear text of error message
updateDvrEntry
(Added in version 5)
Update an existing DVR entry.
Request message fields:
id u32 required DVR Entry ID
channelId u32 optional New channel ID (Added in version 22)
start s64 optional New start time
stop s64 optional New stop time
title str optional New entry title
subtitle str optional New entry subtitle (Added in version 21)
description str optional New entry description (Added in version 6)
startExtra s64 optional New pre-record buffer (Added in version 6)
stopExtra s64 optional New post-record buffer (Added in version 6)
configName str optional New DVR configuration name or UUID
retention u32 optional Retention in days (Added in version 13)
priority u32 optional Recording priority (Added in version 13)
enabled u32 optional Enabled flag (Added in version 23).
comment str optional User Comment (Added in version 42).
Reply message fields:
success u32 required 1 if update as successful, otherwise 0
error str optional Error message if update failed
cancelDvrEntry
(Added in version 5)
Cancel an existing recording, but don't remove the entry from the database.
Request message fields:
id u32 required dvrEnryId to delete
Reply message fields:
success int required 1 if entry was cancelled
error str optional Error message if cancellation failed
deleteDvrEntry
(Added in version 4)
Delete an existing DVR entry from the database.
Request message fields:
id u32 required DVR Entry ID
Reply message fields:
success u32 required 1 if entry was removed
error str optional Error message if the delete fails
getDvrCutpoints
(Added in version 12)
Get DVR cutpoints.
Request message fields:
id u32 required DVR Entry ID
Reply message fields:
cutpoints msg[] optional List of cutpoint entries, if a file is found and has some valid data.
Cutpoint fields:
start u32 required Cut start time in ms.
end u32 required Cut end time in ms.
type u32 required Action type:
0=Cut, 1=Mute, 2=Scene,
3=Commercial break.
addAutorecEntry
(Added in version 13)
Create a new Autorec DVR entry. Title must be specified.
Request message fields:
enabled u32 optional Enabled flag (Added in version 19).
title str required Title for the recordings.
fulltext u32 optional Full text flag (Added in version 20).
directory str optional Forced directory name - missing or empty = auto (Added in version 19).
name str optional Name of this autorec entry (Added in version 18).
configName str optional DVR Configuration Name / UUID.
channelId u32 optional Channel ID.
minDuration u32 optional Minimal duration in seconds (0 = Any).
maxDuration u32 optional Maximal duration in seconds (0 = Any).
daysOfWeek u32 optional Bitmask - Days of week (0x01 = Monday, 0x40 = Sunday, 0x7f = Whole Week, 0 = Not set).
priority u32 optional Priority (0 = Important, 1 = High, 2 = Normal, 3 = Low, 4 = Unimportant, 5 = Not set).
approxTime u32 optional Minutes from midnight (up to 24*60) (window +- 15 mintes) (Obsoleted from version 18).
start s32 optional Minutes from midnight (up to 24*60) for the start of the time window (including) (Added in version 18).
startWindow s32 optional Minutes from modnight (up to 24*60) for the end of the time window (including, cross-noon allowed) (Added in version 18).
startExtra s64 optional Extra start minutes (pre-time).
stopExtra s64 optional Extra stop minutes (post-time).
dupDetect u32 optional Dup Detect (0 = all, 1 = diff episode, 2 = diff subtitle, 3 = diff description, 4 = once per week, 5 = once per day) (Added in version 20).
comment str optional User Comment.
broadcastType u32 optional Broadcast type (0 = any, 1 = new/premiere/unknown, 2 = repeated, 3 = new/premiere) (Added in version 39).
Reply message fields:
success u32 required 1 if entry was added, 0 otherwise
id str optional ID (string!) of created autorec DVR entry
error str optional English clear text of error message
updateAutorecEntry
(Added in version 25)
Update an existing Autorec DVR entry.
Request message fields:
id str required Autorec DVR Entry ID (string!)
title str optional Title for the recordings
(Rest same as for addAutorecEntry)
Reply message fields:
None (errors only propagated via HTTP status code)
deleteAutorecEntry
(Added in version 13)
Delete an existing autorec DVR entry from the database.
Request message fields:
id str required Autorec DVR Entry ID (string!)
Reply message fields:
success u32 required 1 if entry was removed
error str optional Error message if the delete fails
addTimerecEntry
(Added in version 18)
Create a new Timerec DVR entry. Title must be specified.
Request message fields:
enabled u32 optional Enabled flag (Added in version 19).
title str required Title for the recordings.
directory str optional Forced output directory name (Added in version 19).
name str optional Name for this timerec entry.
configName str optional DVR Configuration Name / UUID.
channelId u32 optional Channel ID.
daysOfWeek u32 optional Bitmask - Days of week (0x01 = Monday, 0x40 = Sunday, 0x7f = Whole Week, 0 = Not set).
priority u32 optional Priority (0 = Important, 1 = High, 2 = Normal, 3 = Low, 4 = Unimportant, 5 = Not set).
start u32 optional Minutes from midnight (up to 24*60) for the start of the time window (including)
stop u32 optional Minutes from modnight (up to 24*60) for the end of the time window (including, cross-noon allowed)
retention u32 optional Retention in days.
comment str optional User Comment.
Reply message fields:
success u32 required 1 if entry was added, 0 otherwise
id str optional ID (string!) of created timerec DVR entry
error str optional English clear text of error message
updateTimerecEntry
(Added in version 25)
Update an existing Timerec DVR entry.
Request message fields:
id str required Timerec DVR Entry ID (string!)
title str optional Title for the recordings
(Rest same as for addTimerecEntry)
Reply message fields:
None (errors only propagated via HTTP status code)
deleteTimerecEntry
(Added in version 18)
Delete an existing timerec DVR entry from the database.
Request message fields:
id str required Timerec DVR Entry ID (string!)
Reply message fields:
success u32 required 1 if entry was removed
error str optional Error message if the delete fails
getTicket
(Added in version 5)
Get a ticket to allow access to a channel or recording via HTTP
Request message fields:
channelId u32 optional Channel to gain access for
dvrId u32 optional DVR file to gain access for
Reply message fields:
path str required The full path for access URL (no scheme, host or port)
ticket str required The ticket to pass in the URL query string
subscribe
Request subscription to the given channel.
Request message fields:
channelId u32 required ID for channel.
subscriptionId u32 required Subscription ID. Selected by client. This value is not interpreted by the server in any form.
The value is used from now on in all messages related to the subscription.
weight u32 optional Weighting of this subscription (same as recording priority).
90khz u32 optional Request PTS/DTS in default 90kHz timebase, default is 1MHz (Added in version 7)
normts u32 optional Request PTS/DTS normalisation (Added in version 7)
Note: this will mean missing timestamps are added, first packet should be ~0 and will always be an i-frame.
Note: this is implied if timeshiftPeriod is enabled
Note: from version 17, this is always enabled and this parameter is ignored.
queueDepth u32 optional Change the default packet queue lengths, default 500000 bytes (Added in version 7)
Note: I-frame depth is 3*queueDepth, P-frame is 2*queueDepth and B-frame is queueDepth
timeshiftPeriod u32 optional The number of seconds to keep in the timeshift buffer (Added in version 9)
Note: this may be bounded by server configuration settings
profile str optional Select stream profile (Added in version 16).
Reply message fields:
90khz u32 optional Indicates 90khz timestamps will be used
normts u32 optional Indicates timestamps will be normalised (and fixed)
timeshiftPeriod u32 optional The actual timeshiftPeriod to be used
unsubscribe
Stop a subscription.
Request message fields:
subscriptionId u32 required Subscription ID.
Reply message fields:
None
subscriptionChangeWeight
(Added in version 5)
Change the weight of an existing subscription
Request message fields:
subscriptionId u32 required Subscription ID.
weight u32 optional The new subscription weight.
Reply message fields:
None
subscriptionSkip
(Added in version 9)
Skip a timeshift enabled subscription. The response will be asynchronous subscriptionSkip().
Request message fields:
subscriptionId u32 required Subscription ID.
absolute u32 optional The skip request is absolute
time u64 optional Specify skip using time (units are as for PTS)
size u64 optional Specify skip using size (Not currently used)
Reply message fields:
None
subscriptionSeek
(Added in version 9)
Synonym for subscriptionSkip
subscriptionSpeed
(Added in version 9)
Set the playback speed for the subscription. The response will be asynchronous subscriptionSpeed().
Return a list of stream profiles (configurations).
Reply message fields:
profiles msg[] optional Supported profiles
Message fields:
uuid str required Profile ID
name str required Profile Name
comment str required Profile Comment
getCodecs
(Added in version 11, Removed in version 16)
Return a list of encoders (codecs).
Reply message fields:
encoders list[str] optional Supported encoders
fileOpen
(Added in version 8)
Open a file within the Tvheadend file system. This is now the preferred method (in place of HTTP) for accessing recordings.
Accessing recordings via HTSP will overcome the limitations of standard HTTP streaming which cannot handle both skipping and growing files (i.e. in-progress recordings) at the same time.
Request message fields:
file str required File path to open
Valid file paths:
/dvrfile/ID will open the file associated with DVR entry ID
/imagecache/ID will open the file associated with imagecache entry ID (Note: only works for HTSPv10+)
Reply message fields:
id u32 required The file handle used for further file operations
size u64 optional The size of the file in bytes
mtime u64 optional The last time the file was modified
fileRead
(Added in version 8)
Read data from a file.
Request message fields:
id u32 required The file handle used for further file operations
size u64 required The amount of data to read
offset u64 optional Offset into the file to read (default is current position)
Reply message fields:
data bin required The data read from the file (size may be less than requested)
fileClose
(Added in version 8)
Close an opened file.
Request message fields:
id u32 required The file handle to be closed
Reply message fields:
None
fileStat
(Added in version 8)
Get status of a file.
Request message fields:
id u32 required The file handle to be stat'd
Reply message fields:
size u64 optional The size of the file in bytes
mtime u64 optional The last time the file was modified
fileSeek
(Added in version 8)
Seek to position in a file.
Request message fields:
id u32 required The file handle to be stat'd
offset u64 required The position to seek in the file
whence str required Where to seek relative to (default=SEEK_SET)
Note: valid values for whence
SEEK_SET Seek relative to start of file
SEEK_CUR Seek relative to current position in file
SEEK_END Seek relative (backwards) to end of file
Reply message fields:
offset u64 optional The new absolute position within the file
