en 129
Get Twitter Timeline from Supertweet
Dependencies: EthernetNetIf HTTPClientStreamingExample NetServices mbed
Fork of
HTTPClientStreamingExample
by 
Donatien Garnier
HTTPClientStreamingExample.cpp@0:c9e889dbdca5, 2010-06-14 (annotated)
- Committer:
- donatien
- Date:
- Mon Jun 14 13:36:01 2010 +0000
- Revision:
- 0:c9e889dbdca5
- Child:
- 1:e6e8b074e675
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| donatien | 0:c9e889dbdca5 | 1 | #include "mbed.h" |
| donatien | 0:c9e889dbdca5 | 2 | #include "EthernetNetIf.h" |
| donatien | 0:c9e889dbdca5 | 3 | #include "HTTPClient.h" |
| donatien | 0:c9e889dbdca5 | 4 | |
| donatien | 0:c9e889dbdca5 | 5 | EthernetNetIf eth; |
| donatien | 0:c9e889dbdca5 | 6 | HTTPClient http; |
| donatien | 0:c9e889dbdca5 | 7 | |
| donatien | 0:c9e889dbdca5 | 8 | HTTPResult result; |
| donatien | 0:c9e889dbdca5 | 9 | bool completed = false; |
| donatien | 0:c9e889dbdca5 | 10 | void request_callback(HTTPResult r) |
| donatien | 0:c9e889dbdca5 | 11 | { |
| donatien | 0:c9e889dbdca5 | 12 | result = r; |
| donatien | 0:c9e889dbdca5 | 13 | completed = true; |
| donatien | 0:c9e889dbdca5 | 14 | } |
| donatien | 0:c9e889dbdca5 | 15 | |
| donatien | 0:c9e889dbdca5 | 16 | int main() { |
| donatien | 0:c9e889dbdca5 | 17 | |
| donatien | 0:c9e889dbdca5 | 18 | printf("Start\n"); |
| donatien | 0:c9e889dbdca5 | 19 | |
| donatien | 0:c9e889dbdca5 | 20 | printf("Setting up...\n"); |
| donatien | 0:c9e889dbdca5 | 21 | EthernetErr ethErr = eth.setup(); |
| donatien | 0:c9e889dbdca5 | 22 | if(ethErr) |
| donatien | 0:c9e889dbdca5 | 23 | { |
| donatien | 0:c9e889dbdca5 | 24 | printf("Error %d in setup.\n", ethErr); |
| donatien | 0:c9e889dbdca5 | 25 | return -1; |
| donatien | 0:c9e889dbdca5 | 26 | } |
| donatien | 0:c9e889dbdca5 | 27 | printf("Setup OK\n"); |
| donatien | 0:c9e889dbdca5 | 28 | |
| donatien | 0:c9e889dbdca5 | 29 | HTTPStream stream; |
| donatien | 0:c9e889dbdca5 | 30 | |
| donatien | 0:c9e889dbdca5 | 31 | char BigBuf[512 + 1] = {0}; |
| donatien | 0:c9e889dbdca5 | 32 | stream.readNext((byte*)BigBuf, 512); //Point to buffer for the first read |
| donatien | 0:c9e889dbdca5 | 33 | |
| donatien | 0:c9e889dbdca5 | 34 | HTTPResult r = http.get("HTTP://hackaday.com/feed/", &stream, request_callback); //Load a very large page, such as the hackaday RSS feed |
| donatien | 0:c9e889dbdca5 | 35 | |
| donatien | 0:c9e889dbdca5 | 36 | while(!completed) |
| donatien | 0:c9e889dbdca5 | 37 | { |
| donatien | 0:c9e889dbdca5 | 38 | Net::poll(); //Polls the Networking stack |
| donatien | 0:c9e889dbdca5 | 39 | if(stream.readable()) |
| donatien | 0:c9e889dbdca5 | 40 | { |
| donatien | 0:c9e889dbdca5 | 41 | BigBuf[stream.readLen()] = 0; //Transform this buffer in a zero-terminated char* string |
| donatien | 0:c9e889dbdca5 | 42 | printf("%s",BigBuf); //Display it while loading |
| donatien | 0:c9e889dbdca5 | 43 | //Note: some servers do not like if you throttle them too much, so printf'ing during a request is generally bad practice |
| donatien | 0:c9e889dbdca5 | 44 | stream.readNext((byte*)BigBuf, 512); //Buffer has been read, now we can put more data in it |
| donatien | 0:c9e889dbdca5 | 45 | } |
| donatien | 0:c9e889dbdca5 | 46 | } |
| donatien | 0:c9e889dbdca5 | 47 | printf("\n--------------\n"); |
| donatien | 0:c9e889dbdca5 | 48 | if(result == HTTP_OK) |
| donatien | 0:c9e889dbdca5 | 49 | { |
| donatien | 0:c9e889dbdca5 | 50 | printf("Read completely\n"); |
| donatien | 0:c9e889dbdca5 | 51 | } |
| donatien | 0:c9e889dbdca5 | 52 | else |
| donatien | 0:c9e889dbdca5 | 53 | { |
| donatien | 0:c9e889dbdca5 | 54 | printf("Error %d\n", result); |
| donatien | 0:c9e889dbdca5 | 55 | } |
| donatien | 0:c9e889dbdca5 | 56 | |
| donatien | 0:c9e889dbdca5 | 57 | while(1) |
| donatien | 0:c9e889dbdca5 | 58 | { |
| donatien | 0:c9e889dbdca5 | 59 | |
| donatien | 0:c9e889dbdca5 | 60 | } |
| donatien | 0:c9e889dbdca5 | 61 | |
| donatien | 0:c9e889dbdca5 | 62 | return 0; |
| donatien | 0:c9e889dbdca5 | 63 | |
| donatien | 0:c9e889dbdca5 | 64 | } |