MQTT client test with W5200 ethernet shield
Dependents: IBMIoTClientEthernetExample_W5200
Fork of W5500Interface by
DNSClient/dnsname.h@11:313e091ab3f9, 2014-12-25 (annotated)
- Committer:
- hillkim7
- Date:
- Thu Dec 25 11:18:46 2014 +0000
- Revision:
- 11:313e091ab3f9
- Parent:
- 0:e11e8793c3ce
The IBM MQTT client demo program that is tested with Nucleo F401 and Seeedstudio Ethernet Shield. It is based on Wiznet sample program.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Bongjun | 0:e11e8793c3ce | 1 | // dnsname.h 2013/8/27 |
Bongjun | 0:e11e8793c3ce | 2 | #pragma once |
Bongjun | 0:e11e8793c3ce | 3 | //#include <string> |
Bongjun | 0:e11e8793c3ce | 4 | #include "pico_string.h" |
Bongjun | 0:e11e8793c3ce | 5 | class dnsname { |
Bongjun | 0:e11e8793c3ce | 6 | public: |
Bongjun | 0:e11e8793c3ce | 7 | uint8_t *buf; |
Bongjun | 0:e11e8793c3ce | 8 | pico_string str; |
Bongjun | 0:e11e8793c3ce | 9 | dnsname(uint8_t *s) { |
Bongjun | 0:e11e8793c3ce | 10 | buf = s; |
Bongjun | 0:e11e8793c3ce | 11 | } |
Bongjun | 0:e11e8793c3ce | 12 | int decode(int pos) { |
Bongjun | 0:e11e8793c3ce | 13 | while(1) { |
Bongjun | 0:e11e8793c3ce | 14 | int len = buf[pos++]; |
Bongjun | 0:e11e8793c3ce | 15 | if (len == 0x00) { |
Bongjun | 0:e11e8793c3ce | 16 | break; |
Bongjun | 0:e11e8793c3ce | 17 | } |
Bongjun | 0:e11e8793c3ce | 18 | if ((len&0xc0) == 0xc0) { //compress |
Bongjun | 0:e11e8793c3ce | 19 | int offset = (len&0x3f)<<8|buf[pos]; |
Bongjun | 0:e11e8793c3ce | 20 | decode(offset); |
Bongjun | 0:e11e8793c3ce | 21 | return pos+1; |
Bongjun | 0:e11e8793c3ce | 22 | } |
Bongjun | 0:e11e8793c3ce | 23 | if (!str.empty()) { |
Bongjun | 0:e11e8793c3ce | 24 | str.append("."); |
Bongjun | 0:e11e8793c3ce | 25 | } |
Bongjun | 0:e11e8793c3ce | 26 | str.append((const char*)(buf+pos), len); |
Bongjun | 0:e11e8793c3ce | 27 | pos += len; |
Bongjun | 0:e11e8793c3ce | 28 | } |
Bongjun | 0:e11e8793c3ce | 29 | return pos; |
Bongjun | 0:e11e8793c3ce | 30 | } |
Bongjun | 0:e11e8793c3ce | 31 | |
Bongjun | 0:e11e8793c3ce | 32 | int encode(int pos, char* s) { |
Bongjun | 0:e11e8793c3ce | 33 | while(*s) { |
Bongjun | 0:e11e8793c3ce | 34 | char *f = strchr(s, '.'); |
Bongjun | 0:e11e8793c3ce | 35 | if (f == NULL) { |
Bongjun | 0:e11e8793c3ce | 36 | int len = strlen(s); |
Bongjun | 0:e11e8793c3ce | 37 | buf[pos++] = len; |
Bongjun | 0:e11e8793c3ce | 38 | memcpy(buf+pos, s, len); |
Bongjun | 0:e11e8793c3ce | 39 | pos += len; |
Bongjun | 0:e11e8793c3ce | 40 | break; |
Bongjun | 0:e11e8793c3ce | 41 | } |
Bongjun | 0:e11e8793c3ce | 42 | int len = f - s; |
Bongjun | 0:e11e8793c3ce | 43 | buf[pos++] = len; |
Bongjun | 0:e11e8793c3ce | 44 | memcpy(buf+pos, s, len); |
Bongjun | 0:e11e8793c3ce | 45 | s = f+1; |
Bongjun | 0:e11e8793c3ce | 46 | pos += len; |
Bongjun | 0:e11e8793c3ce | 47 | } |
Bongjun | 0:e11e8793c3ce | 48 | buf[pos++] = 0x00; |
Bongjun | 0:e11e8793c3ce | 49 | return pos; |
Bongjun | 0:e11e8793c3ce | 50 | } |
Bongjun | 0:e11e8793c3ce | 51 | }; |