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74 lines
2.3 KiB
Markdown
74 lines
2.3 KiB
Markdown
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# Minitel for KittenOS NEO
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This package includes the Minitel service, in apps/svc-minitel.lua, and the net library, in libs/net.lua.
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## Minitel service
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The Minitel service provides packet sending and receiving abilities.
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### Installation
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1. Place apps/svc-minitel.lua into `NEO Disk/apps/svc-minitel.lua`
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2. Set the preference run.svc-minitel to "yes"
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## Net library
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The net library provides an easy way of interacting with the minitel service, and implements higher-level features of the stack.
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### Installation
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Place libs/net.lua into `NEO Disk/libs/net.lua`
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### Usage
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Due to how KittenOS's security model works, you have to initialise the library in an unusual way:
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```
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local minitel = neo.requireAccess("x.svc.minitel","minitel daemon access")
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local computer = neo.requireAccess("k.computer","pushing packets")
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local event = require("event")(neo)
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local net = require("net")(event,computer,minitel)
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```
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This gives access to the event API, computer API and Minitel service to the net library.
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### API
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Being a direct port of the OpenOS version, the API is the same.
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#### Layer 3
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*net.genPacketID()* - returns a string of random data
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*net.usend(host, port, data, pid)* - Sends an unreliable packet to *host* on *port* containing *data*, optionally with the packet ID *pid*.
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*net.rsend(host, port, data)* - Sends a reliable packet to *host* on *port* containing *data*.
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#### Layer 4
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*net.send(host, port, data)* - Sends *data* reliably and in order to *host* on *port*.
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#### Layer 5
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*net.open(to,port)* - Establishes a stream to *host* on *port* and returns a stream object
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*net.listen(port)* - Waits for another node to establish a stream, and returns the stream object.
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#### Stream objects
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*stream:write(data)* - Sends *data* to the node at the other end of the stream
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*stream:read(length)* - Reads data from the stream, up to *length* bytes.
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*stream:close()* - Ends the stream and prevents further writing.
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#### Variables
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*net.mtu = 4096* - The maximum length of the data portion of a packet for *net.send*
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*net.streamdelay = 60* - The time, in seconds, *net.open* will wait for a response while trying to establish a connection.
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*net.minport = 32768* - The lowest port *net.listen* will allocate to a new connection.
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*net.maxport = 65535* - The highest port *net.listen* will allocate to a new connection.
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