Hiroshi Yamaguchi / Mbed 2 deprecated SimpleSocketExamples 1.0

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Dependencies:   EthernetNetIf SimpleSocket 1.0 mbed

findbuddy.cpp@34:a108bcc26b69, 2011-11-04 (annotated)

Committer:
yamaguch
Date:
Fri Nov 04 06:04:36 2011 +0000
Revision:
34:a108bcc26b69
Parent:
33:39d9cdf99de8 
removed Serial mon,;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
yamaguch 33:39d9cdf99de8 1 #include "EthernetNetIf.h"
yamaguch 33:39d9cdf99de8 2 #include "SimpleSocket.h"
yamaguch 33:39d9cdf99de8 3
yamaguch 33:39d9cdf99de8 4 void findbuddy() {
yamaguch 33:39d9cdf99de8 5 EthernetNetIf eth;
yamaguch 33:39d9cdf99de8 6 eth.setup();
yamaguch 34:a108bcc26b69 7
yamaguch 33:39d9cdf99de8 8 IpAddr myIP = eth.getIp();
yamaguch 33:39d9cdf99de8 9 DatagramSocket datagram(myIP, 7777);
yamaguch 33:39d9cdf99de8 10
yamaguch 33:39d9cdf99de8 11 Host buddy;
yamaguch 33:39d9cdf99de8 12 for (int i = myIP[3] + 1;; i = (i - myIP[3] + 260) % 10 + myIP[3] + 1) {
yamaguch 33:39d9cdf99de8 13 printf("sending message to %d.%d.%d.%d\n", myIP[0], myIP[1], myIP[2], i);
yamaguch 33:39d9cdf99de8 14 datagram.printf("Hello World\n");
yamaguch 33:39d9cdf99de8 15 datagram.send(IpAddr(myIP[0], myIP[1], myIP[2], i), 7777);
yamaguch 33:39d9cdf99de8 16 // this will not reach target during the first round,
yamaguch 33:39d9cdf99de8 17 // and in order to receive successfully,
yamaguch 34:a108bcc26b69 18 // timeout must be at least 4 seconds (default = 5.0 seconds)
yamaguch 33:39d9cdf99de8 19 if (datagram.receive(&buddy, 4) > 0) {
yamaguch 33:39d9cdf99de8 20 IpAddr ip = buddy.getIp();
yamaguch 33:39d9cdf99de8 21 char buf[80] = {};
yamaguch 33:39d9cdf99de8 22 int len = datagram.read(buf, sizeof(buf) - 1);
yamaguch 33:39d9cdf99de8 23 printf("received from %d.%d.%d.%d: %s", ip[0],ip[1], ip[2], ip[3], buf);
yamaguch 33:39d9cdf99de8 24 break;
yamaguch 33:39d9cdf99de8 25 }
yamaguch 33:39d9cdf99de8 26 }
yamaguch 33:39d9cdf99de8 27
yamaguch 33:39d9cdf99de8 28 for (int i = 0; i < 2; i++) {
yamaguch 33:39d9cdf99de8 29 datagram.printf("There you are!\n");
yamaguch 33:39d9cdf99de8 30 datagram.send(buddy.getIp(), 7777);
yamaguch 34:a108bcc26b69 31
yamaguch 33:39d9cdf99de8 32 if (datagram.receive() > 0) {
yamaguch 33:39d9cdf99de8 33 char buf[80] = {};
yamaguch 33:39d9cdf99de8 34 int len = datagram.read(buf, sizeof(buf) - 1);
yamaguch 33:39d9cdf99de8 35 printf("received: %s", buf);
yamaguch 33:39d9cdf99de8 36 }
yamaguch 33:39d9cdf99de8 37 }
yamaguch 33:39d9cdf99de8 38 }