The document discusses three cases for accessing an external database from an Android application. The first case uses an Apache HTTP client which fails with a 417 error due to an "Expect: 100-Continue" header. The second case uses Google Chrome which does not include this header and succeeds. The third case removes the problem header completely, also succeeding. Special thanks are given to Michael Mayo for information on the issue.

1. How to access the external
database using the Android
kewang

2. Access Model
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3. RESTful Model
GET POST PUT DELETE
show update destroy
/events/1 /events/1 /events/1
index create
/events /events
edit
/events/1/edit
new
/events/new
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4. ActionController
using RESTful
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5. CASE 1:
using
org.apache.http.impl.client.DefaultHttpClient
with Android
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6. send HTTP request
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7. HTTP
417 f
ailed!
?
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8. lighttpd.access.log
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9. Header
Expect: 100-Continue!? 9

10. CASE 2:
using Google Chrome with Ubuntu 10.04
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11. Header
NO Expect: 100-Continue
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12. lighttpd.access.log
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13. development.log (Rails)
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14. CASE 3:
REMOVE IT!!!
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15. Header
NO Expect: 100-Continue
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16. lighttpd.access.log
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17. development.log (Rails)
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18. Special thanks to Michael Mayo
http://overhrd.com/?p=189
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