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Dependencies:   C027_Support C12832 LM75B MMA7660 MbedSmartRest mbed-rtos mbed

Fork of MbedSmartRestMain by Vincent Wochnik

operation/PollThread.cpp@135:c4009ecaf5c0, 2015-08-10 (annotated)

Committer:
xinlei
Date:
Mon Aug 10 14:18:05 2015 +0000
Revision:
135:c4009ecaf5c0
Parent:
130:dc9e37d4bc05 
various clean-ups

Who changed what in which revision?

UserRevisionLine numberNew contents of line
xinlei 96:5dfdc8568e9f 1 #include <stdio.h>
xinlei 96:5dfdc8568e9f 2 #include <ctype.h>
xinlei 96:5dfdc8568e9f 3 #include "PollThread.h"
xinlei 96:5dfdc8568e9f 4 #include "logging.h"
xinlei 96:5dfdc8568e9f 5
xinlei 135:c4009ecaf5c0 6
xinlei 96:5dfdc8568e9f 7 bool PollThread::handshake()
xinlei 96:5dfdc8568e9f 8 {
xinlei 106:c61f0d62b625 9 int l = snprintf(buf2, sizeof(buf2), "%s", "80\r\n");
xinlei 106:c61f0d62b625 10 l = snprintf(buf, sizeof(buf), fmtSmartRest, uri, l, buf2);
xinlei 106:c61f0d62b625 11 sock.setBlocking(3000);
xinlei 106:c61f0d62b625 12 l = sock.sendAndReceive(buf, l, sizeof(buf));
xinlei 125:979ab0d075de 13 if (l <= 0) return false;
xinlei 125:979ab0d075de 14 const char* p = skipHTTPHeader(buf);
xinlei 125:979ab0d075de 15 if (p == NULL) return false;
xinlei 96:5dfdc8568e9f 16 size_t i = 0;
xinlei 125:979ab0d075de 17 for (; isalnum(*p); ++p, ++i) {
xinlei 96:5dfdc8568e9f 18 bayeuxId[i] = *p;
xinlei 96:5dfdc8568e9f 19 }
xinlei 117:5de54f09f754 20 bayeuxId[i] = 0;
xinlei 96:5dfdc8568e9f 21 return bayeuxId[0];
xinlei 96:5dfdc8568e9f 22 }
xinlei 96:5dfdc8568e9f 23
xinlei 135:c4009ecaf5c0 24
xinlei 96:5dfdc8568e9f 25 bool PollThread::subscribe()
xinlei 96:5dfdc8568e9f 26 {
xinlei 106:c61f0d62b625 27 int l = snprintf(buf2, sizeof(buf2), "81,%s,%s\r\n", bayeuxId, chn);
xinlei 106:c61f0d62b625 28 l = snprintf(buf, sizeof(buf), fmtSmartRest, uri, l, buf2);
xinlei 106:c61f0d62b625 29 sock.setBlocking(3000);
xinlei 123:3e4a1ed4bad5 30 l = sock.sendAndReceive(buf, l, sizeof(buf));
xinlei 123:3e4a1ed4bad5 31 if (l <= 0) return false;
xinlei 123:3e4a1ed4bad5 32 const char *p = skipHTTPHeader(buf);
xinlei 123:3e4a1ed4bad5 33 if (p == NULL) return false;
xinlei 123:3e4a1ed4bad5 34 for (; *p && !isgraph(*p); ++p);
xinlei 123:3e4a1ed4bad5 35 return *p == 0;
xinlei 96:5dfdc8568e9f 36 }
xinlei 96:5dfdc8568e9f 37
xinlei 135:c4009ecaf5c0 38
xinlei 96:5dfdc8568e9f 39 bool PollThread::connect()
xinlei 96:5dfdc8568e9f 40 {
xinlei 106:c61f0d62b625 41 int l = snprintf(buf2, sizeof(buf2), "83,%s\r\n", bayeuxId);
xinlei 106:c61f0d62b625 42 l = snprintf(buf, sizeof(buf), fmtSmartRest, uri, l, buf2);
xinlei 127:871e6eb0fa76 43 sock.setBlocking(610000); // Timeout after 10m:10s
xinlei 130:dc9e37d4bc05 44 // sock.setBlocking(-1);
xinlei 130:dc9e37d4bc05 45 // l = sock.sendAndReceive(buf, l, sizeof(buf));
xinlei 130:dc9e37d4bc05 46 int c = sock.connect();
xinlei 130:dc9e37d4bc05 47 if (c < 0) {
xinlei 130:dc9e37d4bc05 48 sock.close();
xinlei 130:dc9e37d4bc05 49 return false;
xinlei 130:dc9e37d4bc05 50 }
xinlei 130:dc9e37d4bc05 51 c = sock.send(buf, l);
xinlei 130:dc9e37d4bc05 52 if (c < 0) {
xinlei 130:dc9e37d4bc05 53 sock.close();
xinlei 130:dc9e37d4bc05 54 return false;
xinlei 130:dc9e37d4bc05 55 }
xinlei 130:dc9e37d4bc05 56 // Avoid heartbeat message overflows the buffer
xinlei 130:dc9e37d4bc05 57 l = 0;
xinlei 135:c4009ecaf5c0 58 for (unsigned short i = 0; i < 300; ++i) {
xinlei 130:dc9e37d4bc05 59 int l2 = sock.receive(buf+l, sizeof(buf)-l);
xinlei 130:dc9e37d4bc05 60 if (l2 > 0) {
xinlei 130:dc9e37d4bc05 61 l += l2;
xinlei 130:dc9e37d4bc05 62 } else {
xinlei 130:dc9e37d4bc05 63 break;
xinlei 130:dc9e37d4bc05 64 }
xinlei 130:dc9e37d4bc05 65 }
xinlei 130:dc9e37d4bc05 66 sock.close();
xinlei 135:c4009ecaf5c0 67 buf[l] = 0;
xinlei 123:3e4a1ed4bad5 68 return l>0;
xinlei 96:5dfdc8568e9f 69 }
xinlei 96:5dfdc8568e9f 70
xinlei 135:c4009ecaf5c0 71
xinlei 96:5dfdc8568e9f 72 void PollThread::threadFunc()
xinlei 96:5dfdc8568e9f 73 {
xinlei 99:e369fc75c000 74 unsigned short state = 1;
xinlei 96:5dfdc8568e9f 75 while (true) {
xinlei 96:5dfdc8568e9f 76 switch (state) {
xinlei 96:5dfdc8568e9f 77 case 1: if (!handshake()) {
xinlei 96:5dfdc8568e9f 78 aCritical("Poll: handshake fail!\n");
xinlei 96:5dfdc8568e9f 79 break;
xinlei 96:5dfdc8568e9f 80 }
xinlei 96:5dfdc8568e9f 81 case 2: if(!subscribe()) {
xinlei 96:5dfdc8568e9f 82 aCritical("Poll: subscribe fail!\n");
xinlei 96:5dfdc8568e9f 83 state = 1;
xinlei 96:5dfdc8568e9f 84 break;
xinlei 96:5dfdc8568e9f 85 }
xinlei 96:5dfdc8568e9f 86 case 3: if(!connect()) {
xinlei 96:5dfdc8568e9f 87 aCritical("Poll: connect fail!\n");
xinlei 96:5dfdc8568e9f 88 break;
xinlei 96:5dfdc8568e9f 89 }
xinlei 135:c4009ecaf5c0 90 parser.parse(buf);
xinlei 96:5dfdc8568e9f 91 if (parser.getBayeuxAdvice() == BA_HANDSHAKE)
xinlei 96:5dfdc8568e9f 92 state = 1;
xinlei 96:5dfdc8568e9f 93 else
xinlei 96:5dfdc8568e9f 94 state = 3;
xinlei 96:5dfdc8568e9f 95 }
xinlei 96:5dfdc8568e9f 96 }
xinlei 96:5dfdc8568e9f 97 }