├── app.yml
├── .gitignore
├── README.md
└── blip
    └── blip.go


/app.yml:
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1 | application: blip-r7
2 | version: 1
3 | runtime: go
4 | api_version: go1
5 | 
6 | handlers:
7 | - url: /.*
8 |   script: _go_app


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/.gitignore:
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 1 | # Compiled Object files, Static and Dynamic libs (Shared Objects)
 2 | *.o
 3 | *.a
 4 | *.so
 5 | 
 6 | # Folders
 7 | _obj
 8 | _test
 9 | 
10 | # Architecture specific extensions/prefixes
11 | *.[568vq]
12 | [568vq].out
13 | 
14 | *.cgo1.go
15 | *.cgo2.c
16 | _cgo_defun.c
17 | _cgo_gotypes.go
18 | _cgo_export.*
19 | 
20 | _testmain.go
21 | 
22 | *.exe
23 | 


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/README.md:
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1 | Blip: Very Simple Geolocation
2 | ====
3 | 
4 | Blip is a very simple JSON based user information API, powered by Google App Engine.
5 | 
6 | Just hit http://blip.runway7.net - it gives you Google's best guess about where you are in JSON.
7 | 
8 | If like Blip but don't want to rely on the Runway 7 instance, feel free to deploy your own - just change the application name in `app.yml` and follow the instructions [here](https://developers.google.com/appengine/docs/go/gettingstarted/uploading).
9 | 


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/blip/blip.go:
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 1 | package blip
 2 | 
 3 | import (
 4 | 	"encoding/json"
 5 | 	"fmt"
 6 | 	"net/http"
 7 | 	"strings"
 8 | )
 9 | 
10 | func init() {
11 | 	http.HandleFunc("/", handler)
12 | }
13 | 
14 | func handler(w http.ResponseWriter, r *http.Request) {
15 | 	w.Header().Add("Content-Type", "application/json")
16 | 	w.Header().Add("Access-Control-Allow-Origin", "*")
17 | 
18 | 	latLon := r.Header.Get("X-AppEngine-CityLatLong")
19 | 	parts := strings.Split(latLon, ",")
20 | 	lat := strings.TrimSpace(parts[0])
21 | 	lon := strings.TrimSpace(parts[1])
22 | 
23 | 	m := map[string]string{
24 | 		"latLong": latLon,
25 | 		"city":    r.Header.Get("X-AppEngine-City"),
26 | 		"region":  r.Header.Get("X-AppEngine-Region"),
27 | 		"country": r.Header.Get("X-AppEngine-Country"),
28 | 		"lat":     lat,
29 | 		"lon":     lon,
30 | 	}
31 | 
32 | 	js, err := json.Marshal(m)
33 | 
34 | 	if err != nil {
35 | 		http.Error(w, err.Error(), http.StatusInternalServerError)
36 | 		return
37 | 	}
38 | 
39 | 	fmt.Fprint(w, string(js))
40 | 
41 | }
42 | 


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