Difference between revisions of "IS TTC"
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The '''T'''arget '''T'''o '''C'''onnection packet is sent to LFS to request information about a remote connection. | The '''T'''arget '''T'''o '''C'''onnection packet is sent to LFS to request information about a remote connection. | ||
| − | + | {| class="wikitable" | |
| − | + | |+ IS_TTC packet properties | |
| − | + | |- | |
| − | + | ! Type !! Name !! Description | |
| − | + | |- | |
| − | + | | byte | |
| − | + | | Size | |
| − | + | | 8 | |
| − | + | |- | |
| − | + | | byte | |
| − | + | | Type | |
| − | } | + | | ISP_TTC |
| + | |- | ||
| + | | byte | ||
| + | | ReqI | ||
| + | | 0 unless it is an info request or a reply to an info request | ||
| + | |- | ||
| + | | byte | ||
| + | | SubT | ||
| + | | subtype, from TTC_ enumeration (e.g. TTC_SEL) | ||
| + | |- | ||
| + | | byte | ||
| + | | UCID | ||
| + | | connection's unique id (0 = local) | ||
| + | |- | ||
| + | | byte | ||
| + | | B1 | ||
| + | | B1, B2, B3 may be used in various ways depending on SubT | ||
| + | |- | ||
| + | | byte | ||
| + | | B2 | ||
| + | | | ||
| + | |- | ||
| + | | byte | ||
| + | | B3 | ||
| + | | | ||
| + | |} | ||
== Packet Details == | == Packet Details == | ||
| Line 24: | Line 49: | ||
=== Type === | === Type === | ||
| − | The packet type from the ISP_ enumeration, always ISP_TTC. | + | The packet type from the [[InSim_enumerations#ISP|ISP_]] enumeration, always ISP_TTC. |
=== ReqI === | === ReqI === | ||
| Line 32: | Line 57: | ||
=== SubT === | === SubT === | ||
| − | The packet's subtype, which is a value from the TTC_ enumeration. | + | The packet's subtype, which is a value from the [[InSim_enumerations#TTC|TTC_]] enumeration. |
* TTC_NONE: Not used. | * TTC_NONE: Not used. | ||
| Line 45: | Line 70: | ||
=== Values === | === Values === | ||
| − | B1, B2, and B3 can contain data depending on the value of SubT. At the time of writing (LFS 0.8B/InSim 10), no sub-type uses those values. | + | B1, B2, and B3 can contain data depending on the value of [[#SubT|SubT]]. At the time of writing (LFS 0.8B/InSim 10), no sub-type uses those values. |
[[Category:InSim packets]] | [[Category:InSim packets]] | ||
Latest revision as of 19:44, 9 February 2026
Introduction
The Target To Connection packet is sent to LFS to request information about a remote connection.
| Type | Name | Description |
|---|---|---|
| byte | Size | 8 |
| byte | Type | ISP_TTC |
| byte | ReqI | 0 unless it is an info request or a reply to an info request |
| byte | SubT | subtype, from TTC_ enumeration (e.g. TTC_SEL) |
| byte | UCID | connection's unique id (0 = local) |
| byte | B1 | B1, B2, B3 may be used in various ways depending on SubT |
| byte | B2 | |
| byte | B3 |
Packet Details
Size
The packet size, always 8 bytes.
Type
The packet type from the ISP_ enumeration, always ISP_TTC.
ReqI
For an info request, this value must bet non-zero, and LFS will include the same ReqI in its reply. Otherwise, it should be zero.
SubT
The packet's subtype, which is a value from the TTC_ enumeration.
- TTC_NONE: Not used.
- TTC_SEL: Send to request an IS_AXM packet for the current layout editor selection.
- TTC_SEL_START: Send to request an IS_AXM packet very time the layout editor selection changes.
- TTC_SEL_STOP: Send to stop receiving [IS_AXM]] packets for every layout editor selection change.
UCID
The connection's unique ID. A value of 0 represents the local connection.
Values
B1, B2, and B3 can contain data depending on the value of SubT. At the time of writing (LFS 0.8B/InSim 10), no sub-type uses those values.
