Simple HTTP server example with EthernetInterface lib. use socket with none blocking mode access the mbed via any browser, mbed echo back http request header.
Dependencies: EthernetInterface mbed-rtos mbed
Fork of HTTPServer_echoback by
main.cpp@13:25ce35614dd1, 2013-03-05 (annotated)
- Committer:
- hsgw
- Date:
- Tue Mar 05 07:29:19 2013 +0000
- Revision:
- 13:25ce35614dd1
- Parent:
- 11:59dcefdda506
- Child:
- 14:607402be8868
1st commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
donatien | 0:bb128f0e952f | 1 | #include "mbed.h" |
donatien | 0:bb128f0e952f | 2 | #include "EthernetInterface.h" |
hsgw | 13:25ce35614dd1 | 3 | #include <stdio.h> |
hsgw | 13:25ce35614dd1 | 4 | #include <string.h> |
donatien | 0:bb128f0e952f | 5 | |
hsgw | 13:25ce35614dd1 | 6 | #define PORT 80 |
hsgw | 13:25ce35614dd1 | 7 | |
hsgw | 13:25ce35614dd1 | 8 | EthernetInterface eth; |
hsgw | 13:25ce35614dd1 | 9 | |
hsgw | 13:25ce35614dd1 | 10 | TCPSocketServer svr; |
hsgw | 13:25ce35614dd1 | 11 | bool serverIsListened = false; |
hsgw | 13:25ce35614dd1 | 12 | |
hsgw | 13:25ce35614dd1 | 13 | TCPSocketConnection client; |
hsgw | 13:25ce35614dd1 | 14 | bool clientIsConnected = false; |
hsgw | 13:25ce35614dd1 | 15 | |
hsgw | 13:25ce35614dd1 | 16 | DigitalOut led1(LED1); //server listning status |
hsgw | 13:25ce35614dd1 | 17 | DigitalOut led2(LED2); //socket connecting status |
hsgw | 13:25ce35614dd1 | 18 | |
hsgw | 13:25ce35614dd1 | 19 | Ticker ledTick; |
hsgw | 13:25ce35614dd1 | 20 | |
hsgw | 13:25ce35614dd1 | 21 | void ledTickfunc() |
hsgw | 13:25ce35614dd1 | 22 | { |
hsgw | 13:25ce35614dd1 | 23 | if(serverIsListened) { |
hsgw | 13:25ce35614dd1 | 24 | led1 = !led1; |
hsgw | 13:25ce35614dd1 | 25 | } else { |
hsgw | 13:25ce35614dd1 | 26 | led1 = false; |
hsgw | 13:25ce35614dd1 | 27 | } |
hsgw | 13:25ce35614dd1 | 28 | } |
hsgw | 13:25ce35614dd1 | 29 | |
hsgw | 13:25ce35614dd1 | 30 | int main (void) |
hsgw | 13:25ce35614dd1 | 31 | { |
hsgw | 13:25ce35614dd1 | 32 | ledTick.attach(&ledTickfunc,0.5); |
hsgw | 13:25ce35614dd1 | 33 | |
hsgw | 13:25ce35614dd1 | 34 | //setup ethernet interface |
donatien | 0:bb128f0e952f | 35 | eth.init(); //Use DHCP |
donatien | 0:bb128f0e952f | 36 | eth.connect(); |
hsgw | 13:25ce35614dd1 | 37 | printf("IP Address is %s\n\r", eth.getIPAddress()); |
hsgw | 13:25ce35614dd1 | 38 | |
hsgw | 13:25ce35614dd1 | 39 | //setup tcp socket |
hsgw | 13:25ce35614dd1 | 40 | if(svr.bind(PORT)< 0) { |
hsgw | 13:25ce35614dd1 | 41 | printf("tcp server bind failed.\n\r"); |
hsgw | 13:25ce35614dd1 | 42 | return -1; |
hsgw | 13:25ce35614dd1 | 43 | } else { |
hsgw | 13:25ce35614dd1 | 44 | printf("tcp server bind successed.\n\r"); |
hsgw | 13:25ce35614dd1 | 45 | serverIsListened = true; |
hsgw | 13:25ce35614dd1 | 46 | } |
hsgw | 13:25ce35614dd1 | 47 | |
hsgw | 13:25ce35614dd1 | 48 | if(svr.listen(1) < 0) { |
hsgw | 13:25ce35614dd1 | 49 | printf("tcp server listen failed.\n\r"); |
hsgw | 13:25ce35614dd1 | 50 | return -1; |
hsgw | 13:25ce35614dd1 | 51 | } else { |
hsgw | 13:25ce35614dd1 | 52 | printf("tcp server is listening...\n\r"); |
emilmont | 7:65188f4a8c25 | 53 | } |
hsgw | 13:25ce35614dd1 | 54 | |
hsgw | 13:25ce35614dd1 | 55 | //listening for http GET request |
hsgw | 13:25ce35614dd1 | 56 | while (serverIsListened) { |
hsgw | 13:25ce35614dd1 | 57 | if(svr.accept(client)<0) { |
hsgw | 13:25ce35614dd1 | 58 | printf("failed to accept connection.\n\r"); |
hsgw | 13:25ce35614dd1 | 59 | } else { |
hsgw | 13:25ce35614dd1 | 60 | printf("connection success!\n\rIP: %s\n\r",client.get_address()); |
hsgw | 13:25ce35614dd1 | 61 | clientIsConnected = true; |
hsgw | 13:25ce35614dd1 | 62 | led2 = true; |
hsgw | 13:25ce35614dd1 | 63 | |
hsgw | 13:25ce35614dd1 | 64 | while(clientIsConnected) { |
hsgw | 13:25ce35614dd1 | 65 | char buffer[1024] = {}; |
hsgw | 13:25ce35614dd1 | 66 | switch(client.receive(buffer, 1023)) { |
hsgw | 13:25ce35614dd1 | 67 | case 0: |
hsgw | 13:25ce35614dd1 | 68 | printf("recieved buffer is empty.\n\r"); |
hsgw | 13:25ce35614dd1 | 69 | clientIsConnected = false; |
hsgw | 13:25ce35614dd1 | 70 | break; |
hsgw | 13:25ce35614dd1 | 71 | case -1: |
hsgw | 13:25ce35614dd1 | 72 | printf("failed to read data from client.\n\r"); |
hsgw | 13:25ce35614dd1 | 73 | clientIsConnected = false; |
hsgw | 13:25ce35614dd1 | 74 | break; |
hsgw | 13:25ce35614dd1 | 75 | default: |
hsgw | 13:25ce35614dd1 | 76 | printf("Recieved Data: %d\n\r\n\r%.*s\n\r",strlen(buffer),strlen(buffer),buffer); |
hsgw | 13:25ce35614dd1 | 77 | if(buffer[0] == 'G' && buffer[1] == 'E' && buffer[2] == 'T' ) { |
hsgw | 13:25ce35614dd1 | 78 | printf("GET request incomming.\n\r"); |
hsgw | 13:25ce35614dd1 | 79 | //setup http response header & data |
hsgw | 13:25ce35614dd1 | 80 | char echoHeader[256] = {}; |
hsgw | 13:25ce35614dd1 | 81 | sprintf(echoHeader,"HTTP/1.1 200 OK\n\rContent-Length: %d\n\rContent-Type: text\n\rConnection: Close\n\r\n\r",strlen(buffer)); |
hsgw | 13:25ce35614dd1 | 82 | client.send(echoHeader,strlen(echoHeader)); |
hsgw | 13:25ce35614dd1 | 83 | client.send(buffer,strlen(buffer)); |
hsgw | 13:25ce35614dd1 | 84 | clientIsConnected = false; |
hsgw | 13:25ce35614dd1 | 85 | printf("echo back done.\n\r"); |
hsgw | 13:25ce35614dd1 | 86 | } |
hsgw | 13:25ce35614dd1 | 87 | break; |
hsgw | 13:25ce35614dd1 | 88 | } |
hsgw | 13:25ce35614dd1 | 89 | } |
hsgw | 13:25ce35614dd1 | 90 | printf("close connection.\n\rtcp server is listening...\n\r"); |
hsgw | 13:25ce35614dd1 | 91 | client.close(); |
hsgw | 13:25ce35614dd1 | 92 | led2 = false; |
hsgw | 13:25ce35614dd1 | 93 | } |
hsgw | 13:25ce35614dd1 | 94 | } |
donatien | 0:bb128f0e952f | 95 | } |