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Better minecraft pinger

This commit is contained in:
Neale Pickett 2014-12-27 23:52:34 +00:00
parent 084cc9d297
commit d74b7e1415
2 changed files with 99 additions and 13 deletions
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55
minepig.cgi.go
View File

@ -4,12 +4,13 @@ import (
"net" "net"
"fmt" "fmt"
"time" "time"
"sync"
) )
const MAGIC = "\x00\xff\xff\x00\xfe\xfe\xfe\xfe\xfd\xfd\xfd\xfd\x12\x34\x56\x78" const MAGIC = "\x00\xff\xff\x00\xfe\xfe\xfe\xfe\xfd\xfd\xfd\xfd\x12\x34\x56\x78"
func isAlive() bool { func isAlive(host string) bool {
conn, err := net.Dial("udp", "h.woozle.org:30919") conn, err := net.Dial("udp", host)
if err != nil { if err != nil {
return false return false
} }
@ -28,24 +29,54 @@ func isAlive() bool {
return true return true
} }
var wg sync.WaitGroup
func waitClose(c chan<- string) {
wg.Wait()
close(c)
}
type HostEntry struct {
host string
owner string
}
var hosts = []HostEntry{
{"h.woozle.org:30919", "Ginnie"},
{"h.woozle.org:44321", "Neale"},
{"h.woozle.org:58000", "Amy"},
}
func ping(results chan<- string, e HostEntry) {
defer wg.Done()
if isAlive(e.host) {
results <- fmt.Sprintf("%s is playing at %s", e.owner, e.host)
}
}
func main() { func main() {
results := make(chan string, 5)
for _, host := range hosts {
wg.Add(1)
go ping(results, host)
}
go waitClose(results)
fmt.Println("Content-type: text/html") fmt.Println("Content-type: text/html")
fmt.Println("") fmt.Println("")
fmt.Println("<!DOCTYPE html>") fmt.Println("<!DOCTYPE html>")
fmt.Println("<html>") fmt.Println("<html>")
fmt.Println("<head>") fmt.Println("<head>")
fmt.Println("<meta name=\"viewport\" content=\"width=device-width\">") fmt.Println("<meta name=\"viewport\" content=\"width=device-width\">")
fmt.Println("<style type=\"text/css\">#a{font-size: 500%; text-align: center; background: silver;}</style>") fmt.Println("<style type=\"text/css\">#a{font-size: 120%; background: silver;}</style>")
fmt.Println("<title>Is Ginnie playing Minecraft PE?</title></head>") fmt.Println("<title>Minecraft PE ping</title></head>")
fmt.Println("<body>") fmt.Println("<body>")
fmt.Println("<h1>Is Ginnie playing Minecraft PE?</h1>") fmt.Println("<h1>Are The Picketts playing Minecraft PE?</h1>")
fmt.Println("<p id=\"a\">") fmt.Println("<ul id=\"a\">")
if isAlive() { for msg := range results {
fmt.Println("yes") fmt.Printf("<li>%s</li>\n", msg)
} else {
fmt.Println("no")
} }
fmt.Println("</p>") fmt.Println("</ul>")
fmt.Println("<p>Use the external server address <code>h.woozle.org</code>, port <code>30919</code> to join in.</p>")
fmt.Println("</body></html>") fmt.Println("</body></html>")
} }

57
papers/longbets.mdwn
View File

@ -4,7 +4,62 @@ All bets are for $1.
Neale's prediction is the one stated. Neale's prediction is the one stated.
Los Angeles Population (Blake) Los Angeles Population (Blake)
------------------------------ ==============================
On Feb 24, 2029, the metropolitan area commonly known as "Los Angeles" On Feb 24, 2029, the metropolitan area commonly known as "Los Angeles"
will have, at most recent measure, double-digit population decrease. will have, at most recent measure, double-digit population decrease.
Neale's Rationale
-----------------
LA uses a ton of fresh water, brought in from all over the place.
As droughts worsen, there will be increasingly large fights over water.
Regardless of the political outcome,
places closer to fresh water will tend to keep that water.
LA is not close to fresh water.
Las Vegas is going to have the same problem,
but predicting the collapse of Las Vegas didn't seem as challenging.
------
This Page (Nemo Thorx)
======================
By 7 December, 2028, Neale will have updated this web page
within the last 12 months.
Neale's Rationale
-----------------
I actually think Nemo's right,
but this was such an amusing bet,
I couldn't turn it down.
------
DC Power (Nobody yet!)
======================
By 2030, over ⅓ of US residences currently being built will be wired with a DC power bus.
Neale's Rationale
-----------------
When I counted in 2014, we had only 5 electrical devices
that used Alternating Current.
Everything else ran off a "wall wart":
an AC to DC transformer.
In addition to DC being tremendously safer
(it won't stop Junior's heart when he sticks a fork in a USB port),
it's also potentially more efficient to have a single transformer for the entire house.
As more houses move to solar power with battery storage,
the conversion from DC batteries to AC wall power,
just to be converted again to DC,
will be a tantalizing inefficiency to conquer.
And with the introduction in 2015 of USB delivering up to 100W,
there will even be a standard to use.