ARM mbed M2X API Client: The ARM mbed client library is used to send/receive data to/from AT&T's M2X service from mbed LPC1768 microcontrollers.
Dependents: m2x-demo-all M2X_MTS_ACCEL_DEMO M2X_MTS_Accel M2X_K64F_ACCEL ... more
M2XStreamClient.cpp@19:4dfa28d37b8f, 2016-01-01 (annotated)
- Committer:
- citrusbyte
- Date:
- Fri Jan 01 15:48:18 2016 +0000
- Revision:
- 19:4dfa28d37b8f
- Parent:
- 17:9db4a86b876a
Use correct M2XStreamClient.cpp file
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
jb8414 | 0:f479e4f4db0e | 1 | #include "M2XStreamClient.h" |
jb8414 | 0:f479e4f4db0e | 2 | |
citrusbyte | 19:4dfa28d37b8f | 3 | #include <jsonlite.h> |
citrusbyte | 19:4dfa28d37b8f | 4 | |
citrusbyte | 19:4dfa28d37b8f | 5 | #include "StreamParseFunctions.h" |
citrusbyte | 19:4dfa28d37b8f | 6 | #include "LocationParseFunctions.h" |
citrusbyte | 19:4dfa28d37b8f | 7 | |
citrusbyte | 19:4dfa28d37b8f | 8 | const char* M2XStreamClient::kDefaultM2XHost = "api-m2x.att.com"; |
citrusbyte | 19:4dfa28d37b8f | 9 | |
citrusbyte | 19:4dfa28d37b8f | 10 | static int write_delete_values(Print* print, const char* from, const char* end); |
citrusbyte | 19:4dfa28d37b8f | 11 | int print_encoded_string(Print* print, const char* str); |
citrusbyte | 19:4dfa28d37b8f | 12 | int tolower(int ch); |
citrusbyte | 19:4dfa28d37b8f | 13 | |
citrusbyte | 19:4dfa28d37b8f | 14 | #if defined(ARDUINO_PLATFORM) || defined(MBED_PLATFORM) |
citrusbyte | 19:4dfa28d37b8f | 15 | int tolower(int ch) |
citrusbyte | 19:4dfa28d37b8f | 16 | { |
citrusbyte | 19:4dfa28d37b8f | 17 | // Arduino and mbed use ASCII table, so we can simplify the implementation |
citrusbyte | 19:4dfa28d37b8f | 18 | if ((ch >= 'A') && (ch <= 'Z')) { |
citrusbyte | 19:4dfa28d37b8f | 19 | return (ch + 32); |
citrusbyte | 19:4dfa28d37b8f | 20 | } |
citrusbyte | 19:4dfa28d37b8f | 21 | return ch; |
citrusbyte | 19:4dfa28d37b8f | 22 | } |
citrusbyte | 19:4dfa28d37b8f | 23 | #else |
citrusbyte | 19:4dfa28d37b8f | 24 | // For other platform, we use libc's tolower by default |
citrusbyte | 19:4dfa28d37b8f | 25 | #include <ctype.h> |
citrusbyte | 19:4dfa28d37b8f | 26 | #endif |
jb8414 | 0:f479e4f4db0e | 27 | |
citrusbyte | 19:4dfa28d37b8f | 28 | M2XStreamClient::M2XStreamClient(Client* client, |
citrusbyte | 19:4dfa28d37b8f | 29 | const char* key, |
citrusbyte | 19:4dfa28d37b8f | 30 | int case_insensitive, |
citrusbyte | 19:4dfa28d37b8f | 31 | const char* host, |
citrusbyte | 19:4dfa28d37b8f | 32 | int port, |
citrusbyte | 19:4dfa28d37b8f | 33 | const char* path_prefix) : _client(client), |
citrusbyte | 19:4dfa28d37b8f | 34 | _key(key), |
citrusbyte | 19:4dfa28d37b8f | 35 | _case_insensitive(case_insensitive), |
citrusbyte | 19:4dfa28d37b8f | 36 | _host(host), |
citrusbyte | 19:4dfa28d37b8f | 37 | _port(port), |
citrusbyte | 19:4dfa28d37b8f | 38 | _path_prefix(path_prefix), |
citrusbyte | 19:4dfa28d37b8f | 39 | _null_print() { |
citrusbyte | 19:4dfa28d37b8f | 40 | } |
citrusbyte | 19:4dfa28d37b8f | 41 | |
citrusbyte | 19:4dfa28d37b8f | 42 | int M2XStreamClient::listStreamValues(const char* deviceId, const char* streamName, |
citrusbyte | 19:4dfa28d37b8f | 43 | stream_value_read_callback callback, void* context, |
citrusbyte | 19:4dfa28d37b8f | 44 | const char* query) { |
citrusbyte | 19:4dfa28d37b8f | 45 | if (_client->connect(_host, _port)) { |
citrusbyte | 19:4dfa28d37b8f | 46 | DBGLN("%s", "Connected to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 47 | _client->print("GET "); |
citrusbyte | 19:4dfa28d37b8f | 48 | if (_path_prefix) |
citrusbyte | 19:4dfa28d37b8f | 49 | _client->print(_path_prefix); |
citrusbyte | 19:4dfa28d37b8f | 50 | _client->print("/v2/devices/"); |
citrusbyte | 19:4dfa28d37b8f | 51 | print_encoded_string(_client, deviceId); |
citrusbyte | 19:4dfa28d37b8f | 52 | _client->print("/streams/"); |
citrusbyte | 19:4dfa28d37b8f | 53 | print_encoded_string(_client, streamName); |
citrusbyte | 19:4dfa28d37b8f | 54 | _client->print("/values.json"); |
citrusbyte | 19:4dfa28d37b8f | 55 | |
citrusbyte | 19:4dfa28d37b8f | 56 | if (query) { |
citrusbyte | 19:4dfa28d37b8f | 57 | if (query[0] != '?') { |
citrusbyte | 19:4dfa28d37b8f | 58 | _client->print('?'); |
citrusbyte | 19:4dfa28d37b8f | 59 | } |
citrusbyte | 19:4dfa28d37b8f | 60 | _client->print(query); |
citrusbyte | 19:4dfa28d37b8f | 61 | } |
citrusbyte | 19:4dfa28d37b8f | 62 | |
citrusbyte | 19:4dfa28d37b8f | 63 | _client->println(" HTTP/1.0"); |
citrusbyte | 19:4dfa28d37b8f | 64 | writeHttpHeader(-1); |
citrusbyte | 19:4dfa28d37b8f | 65 | } else { |
citrusbyte | 19:4dfa28d37b8f | 66 | DBGLN("%s", "ERROR: Cannot connect to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 67 | return E_NOCONNECTION; |
citrusbyte | 19:4dfa28d37b8f | 68 | } |
citrusbyte | 19:4dfa28d37b8f | 69 | int status = readStatusCode(false); |
citrusbyte | 19:4dfa28d37b8f | 70 | if (status == 200) { |
citrusbyte | 19:4dfa28d37b8f | 71 | readStreamValue(callback, context); |
citrusbyte | 19:4dfa28d37b8f | 72 | } |
citrusbyte | 19:4dfa28d37b8f | 73 | |
citrusbyte | 19:4dfa28d37b8f | 74 | close(); |
citrusbyte | 19:4dfa28d37b8f | 75 | return status; |
jb8414 | 0:f479e4f4db0e | 76 | } |
jb8414 | 0:f479e4f4db0e | 77 | |
citrusbyte | 19:4dfa28d37b8f | 78 | int M2XStreamClient::readLocation(const char* deviceId, |
citrusbyte | 19:4dfa28d37b8f | 79 | location_read_callback callback, |
citrusbyte | 19:4dfa28d37b8f | 80 | void* context) { |
citrusbyte | 19:4dfa28d37b8f | 81 | if (_client->connect(_host, _port)) { |
citrusbyte | 19:4dfa28d37b8f | 82 | DBGLN("%s", "Connected to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 83 | _client->print("GET "); |
citrusbyte | 19:4dfa28d37b8f | 84 | if (_path_prefix) |
citrusbyte | 19:4dfa28d37b8f | 85 | _client->print(_path_prefix); |
citrusbyte | 19:4dfa28d37b8f | 86 | _client->print("/v2/devices/"); |
citrusbyte | 19:4dfa28d37b8f | 87 | print_encoded_string(_client, deviceId); |
citrusbyte | 19:4dfa28d37b8f | 88 | _client->println("/location HTTP/1.0"); |
citrusbyte | 19:4dfa28d37b8f | 89 | |
citrusbyte | 19:4dfa28d37b8f | 90 | writeHttpHeader(-1); |
citrusbyte | 19:4dfa28d37b8f | 91 | } else { |
citrusbyte | 19:4dfa28d37b8f | 92 | DBGLN("%s", "ERROR: Cannot connect to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 93 | return E_NOCONNECTION; |
citrusbyte | 19:4dfa28d37b8f | 94 | } |
citrusbyte | 19:4dfa28d37b8f | 95 | int status = readStatusCode(false); |
citrusbyte | 19:4dfa28d37b8f | 96 | if (status == 200) { |
citrusbyte | 19:4dfa28d37b8f | 97 | readLocation(callback, context); |
citrusbyte | 19:4dfa28d37b8f | 98 | } |
citrusbyte | 19:4dfa28d37b8f | 99 | |
citrusbyte | 19:4dfa28d37b8f | 100 | close(); |
citrusbyte | 19:4dfa28d37b8f | 101 | return status; |
citrusbyte | 19:4dfa28d37b8f | 102 | } |
citrusbyte | 19:4dfa28d37b8f | 103 | |
citrusbyte | 19:4dfa28d37b8f | 104 | int M2XStreamClient::deleteValues(const char* deviceId, const char* streamName, |
citrusbyte | 19:4dfa28d37b8f | 105 | const char* from, const char* end) { |
citrusbyte | 19:4dfa28d37b8f | 106 | if (_client->connect(_host, _port)) { |
citrusbyte | 19:4dfa28d37b8f | 107 | DBGLN("%s", "Connected to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 108 | int length = write_delete_values(&_null_print, from, end); |
citrusbyte | 19:4dfa28d37b8f | 109 | writeDeleteHeader(deviceId, streamName, length); |
citrusbyte | 19:4dfa28d37b8f | 110 | write_delete_values(_client, from, end); |
citrusbyte | 19:4dfa28d37b8f | 111 | } else { |
citrusbyte | 19:4dfa28d37b8f | 112 | DBGLN("%s", "ERROR: Cannot connect to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 113 | return E_NOCONNECTION; |
citrusbyte | 19:4dfa28d37b8f | 114 | } |
citrusbyte | 19:4dfa28d37b8f | 115 | |
citrusbyte | 19:4dfa28d37b8f | 116 | return readStatusCode(true); |
citrusbyte | 10:4ce9eba38dbe | 117 | } |
citrusbyte | 10:4ce9eba38dbe | 118 | |
citrusbyte | 19:4dfa28d37b8f | 119 | int M2XStreamClient::getTimestamp32(int32_t *ts) { |
citrusbyte | 19:4dfa28d37b8f | 120 | // The maximum value of signed 64-bit integer is 0x7fffffffffffffff, |
citrusbyte | 19:4dfa28d37b8f | 121 | // which is 9223372036854775807. It consists of 19 characters, so a |
citrusbyte | 19:4dfa28d37b8f | 122 | // buffer of 20 is definitely enough here |
citrusbyte | 19:4dfa28d37b8f | 123 | int length = 20; |
citrusbyte | 19:4dfa28d37b8f | 124 | char buffer[20]; |
citrusbyte | 19:4dfa28d37b8f | 125 | int status = getTimestamp(buffer, &length); |
citrusbyte | 19:4dfa28d37b8f | 126 | if (status == 200) { |
citrusbyte | 19:4dfa28d37b8f | 127 | int32_t result = 0; |
citrusbyte | 19:4dfa28d37b8f | 128 | for (int i = 0; i < length; i++) { |
citrusbyte | 19:4dfa28d37b8f | 129 | result = result * 10 + (buffer[i] - '0'); |
citrusbyte | 19:4dfa28d37b8f | 130 | } |
citrusbyte | 19:4dfa28d37b8f | 131 | if (ts != NULL) { *ts = result; } |
citrusbyte | 19:4dfa28d37b8f | 132 | } |
citrusbyte | 19:4dfa28d37b8f | 133 | return status; |
citrusbyte | 19:4dfa28d37b8f | 134 | } |
citrusbyte | 19:4dfa28d37b8f | 135 | |
citrusbyte | 19:4dfa28d37b8f | 136 | int M2XStreamClient::getTimestamp(char* buffer, int *bufferLength) { |
citrusbyte | 19:4dfa28d37b8f | 137 | if (bufferLength == NULL) { return E_INVALID; } |
citrusbyte | 19:4dfa28d37b8f | 138 | if (_client->connect(_host, _port)) { |
citrusbyte | 19:4dfa28d37b8f | 139 | DBGLN("%s", "Connected to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 140 | _client->println("GET /v2/time/seconds HTTP/1.0"); |
citrusbyte | 16:7903152de19f | 141 | |
citrusbyte | 19:4dfa28d37b8f | 142 | writeHttpHeader(-1); |
citrusbyte | 19:4dfa28d37b8f | 143 | } else { |
citrusbyte | 19:4dfa28d37b8f | 144 | DBGLN("%s", "ERROR: Cannot connect to M2X server!"); |
citrusbyte | 19:4dfa28d37b8f | 145 | return E_NOCONNECTION; |
citrusbyte | 16:7903152de19f | 146 | } |
citrusbyte | 19:4dfa28d37b8f | 147 | int status = readStatusCode(false); |
citrusbyte | 19:4dfa28d37b8f | 148 | if (status == 200) { |
citrusbyte | 19:4dfa28d37b8f | 149 | int length = readContentLength(); |
citrusbyte | 19:4dfa28d37b8f | 150 | if (length < 0) { |
citrusbyte | 19:4dfa28d37b8f | 151 | close(); |
citrusbyte | 19:4dfa28d37b8f | 152 | return length; |
citrusbyte | 19:4dfa28d37b8f | 153 | } |
citrusbyte | 19:4dfa28d37b8f | 154 | if (*bufferLength < length) { |
citrusbyte | 19:4dfa28d37b8f | 155 | *bufferLength = length; |
citrusbyte | 19:4dfa28d37b8f | 156 | return E_BUFFER_TOO_SMALL; |
citrusbyte | 19:4dfa28d37b8f | 157 | } |
citrusbyte | 19:4dfa28d37b8f | 158 | *bufferLength = length; |
citrusbyte | 19:4dfa28d37b8f | 159 | int index = skipHttpHeader(); |
citrusbyte | 19:4dfa28d37b8f | 160 | if (index != E_OK) { |
citrusbyte | 19:4dfa28d37b8f | 161 | close(); |
citrusbyte | 19:4dfa28d37b8f | 162 | return index; |
citrusbyte | 19:4dfa28d37b8f | 163 | } |
citrusbyte | 19:4dfa28d37b8f | 164 | index = 0; |
citrusbyte | 19:4dfa28d37b8f | 165 | while (index < length) { |
citrusbyte | 19:4dfa28d37b8f | 166 | DBG("%s", "Received Data: "); |
citrusbyte | 19:4dfa28d37b8f | 167 | while ((index < length) && _client->available()) { |
citrusbyte | 19:4dfa28d37b8f | 168 | buffer[index++] = _client->read(); |
citrusbyte | 19:4dfa28d37b8f | 169 | DBG("%c", buffer[index - 1]); |
citrusbyte | 19:4dfa28d37b8f | 170 | } |
citrusbyte | 19:4dfa28d37b8f | 171 | DBGLNEND; |
citrusbyte | 16:7903152de19f | 172 | |
citrusbyte | 19:4dfa28d37b8f | 173 | if ((!_client->connected()) && |
citrusbyte | 19:4dfa28d37b8f | 174 | (index < length)) { |
citrusbyte | 19:4dfa28d37b8f | 175 | close(); |
citrusbyte | 19:4dfa28d37b8f | 176 | return E_NOCONNECTION; |
citrusbyte | 19:4dfa28d37b8f | 177 | } |
citrusbyte | 19:4dfa28d37b8f | 178 | |
citrusbyte | 19:4dfa28d37b8f | 179 | delay(200); |
citrusbyte | 19:4dfa28d37b8f | 180 | } |
citrusbyte | 19:4dfa28d37b8f | 181 | } |
citrusbyte | 19:4dfa28d37b8f | 182 | close(); |
citrusbyte | 16:7903152de19f | 183 | return status; |
citrusbyte | 16:7903152de19f | 184 | } |
citrusbyte | 16:7903152de19f | 185 | |
citrusbyte | 19:4dfa28d37b8f | 186 | static int write_delete_values(Print* print, const char* from, |
citrusbyte | 19:4dfa28d37b8f | 187 | const char* end) { |
citrusbyte | 19:4dfa28d37b8f | 188 | int bytes = 0; |
citrusbyte | 19:4dfa28d37b8f | 189 | bytes += print->print("{\"from\":\""); |
citrusbyte | 19:4dfa28d37b8f | 190 | bytes += print->print(from); |
citrusbyte | 19:4dfa28d37b8f | 191 | bytes += print->print("\",\"end\":\""); |
citrusbyte | 19:4dfa28d37b8f | 192 | bytes += print->print(end); |
citrusbyte | 19:4dfa28d37b8f | 193 | bytes += print->print("\"}"); |
citrusbyte | 19:4dfa28d37b8f | 194 | return bytes; |
citrusbyte | 19:4dfa28d37b8f | 195 | } |
citrusbyte | 19:4dfa28d37b8f | 196 | |
citrusbyte | 19:4dfa28d37b8f | 197 | // Encodes and prints string using Percent-encoding specified |
citrusbyte | 19:4dfa28d37b8f | 198 | // in RFC 1738, Section 2.2 |
citrusbyte | 19:4dfa28d37b8f | 199 | int print_encoded_string(Print* print, const char* str) { |
citrusbyte | 19:4dfa28d37b8f | 200 | int bytes = 0; |
citrusbyte | 19:4dfa28d37b8f | 201 | for (int i = 0; str[i] != 0; i++) { |
citrusbyte | 19:4dfa28d37b8f | 202 | if (((str[i] >= 'A') && (str[i] <= 'Z')) || |
citrusbyte | 19:4dfa28d37b8f | 203 | ((str[i] >= 'a') && (str[i] <= 'z')) || |
citrusbyte | 19:4dfa28d37b8f | 204 | ((str[i] >= '0') && (str[i] <= '9')) || |
citrusbyte | 19:4dfa28d37b8f | 205 | (str[i] == '-') || (str[i] == '_') || |
citrusbyte | 19:4dfa28d37b8f | 206 | (str[i] == '.') || (str[i] == '~')) { |
citrusbyte | 19:4dfa28d37b8f | 207 | bytes += print->print(str[i]); |
citrusbyte | 19:4dfa28d37b8f | 208 | } else { |
citrusbyte | 19:4dfa28d37b8f | 209 | // Encode all other characters |
citrusbyte | 19:4dfa28d37b8f | 210 | bytes += print->print('%'); |
citrusbyte | 19:4dfa28d37b8f | 211 | bytes += print->print(HEX(str[i] / 16)); |
citrusbyte | 19:4dfa28d37b8f | 212 | bytes += print->print(HEX(str[i] % 16)); |
citrusbyte | 19:4dfa28d37b8f | 213 | } |
jb8414 | 0:f479e4f4db0e | 214 | } |
citrusbyte | 19:4dfa28d37b8f | 215 | return bytes; |
citrusbyte | 19:4dfa28d37b8f | 216 | } |
citrusbyte | 19:4dfa28d37b8f | 217 | |
citrusbyte | 19:4dfa28d37b8f | 218 | void M2XStreamClient::writePutHeader(const char* deviceId, |
citrusbyte | 19:4dfa28d37b8f | 219 | const char* streamName, |
citrusbyte | 19:4dfa28d37b8f | 220 | int contentLength) { |
citrusbyte | 19:4dfa28d37b8f | 221 | _client->print("PUT "); |
citrusbyte | 19:4dfa28d37b8f | 222 | if (_path_prefix) |
citrusbyte | 19:4dfa28d37b8f | 223 | _client->print(_path_prefix); |
citrusbyte | 19:4dfa28d37b8f | 224 | _client->print("/v2/devices/"); |
citrusbyte | 19:4dfa28d37b8f | 225 | print_encoded_string(_client, deviceId); |
citrusbyte | 19:4dfa28d37b8f | 226 | _client->print("/streams/"); |
citrusbyte | 19:4dfa28d37b8f | 227 | print_encoded_string(_client, streamName); |
citrusbyte | 19:4dfa28d37b8f | 228 | _client->println("/value HTTP/1.0"); |
citrusbyte | 19:4dfa28d37b8f | 229 | |
citrusbyte | 19:4dfa28d37b8f | 230 | writeHttpHeader(contentLength); |
citrusbyte | 19:4dfa28d37b8f | 231 | } |
citrusbyte | 19:4dfa28d37b8f | 232 | |
citrusbyte | 19:4dfa28d37b8f | 233 | void M2XStreamClient::writeDeleteHeader(const char* deviceId, |
citrusbyte | 19:4dfa28d37b8f | 234 | const char* streamName, |
citrusbyte | 19:4dfa28d37b8f | 235 | int contentLength) { |
citrusbyte | 19:4dfa28d37b8f | 236 | _client->print("DELETE "); |
citrusbyte | 19:4dfa28d37b8f | 237 | if (_path_prefix) |
citrusbyte | 19:4dfa28d37b8f | 238 | _client->print(_path_prefix); |
citrusbyte | 19:4dfa28d37b8f | 239 | _client->print("/v2/devices/"); |
citrusbyte | 19:4dfa28d37b8f | 240 | print_encoded_string(_client, deviceId); |
citrusbyte | 19:4dfa28d37b8f | 241 | _client->print("/streams/"); |
citrusbyte | 19:4dfa28d37b8f | 242 | print_encoded_string(_client, streamName); |
citrusbyte | 19:4dfa28d37b8f | 243 | _client->print("/values"); |
citrusbyte | 19:4dfa28d37b8f | 244 | _client->println(" HTTP/1.0"); |
citrusbyte | 19:4dfa28d37b8f | 245 | |
citrusbyte | 19:4dfa28d37b8f | 246 | writeHttpHeader(contentLength); |
jb8414 | 0:f479e4f4db0e | 247 | } |
jb8414 | 0:f479e4f4db0e | 248 | |
citrusbyte | 19:4dfa28d37b8f | 249 | void M2XStreamClient::writeHttpHeader(int contentLength) { |
citrusbyte | 19:4dfa28d37b8f | 250 | _client->println(USER_AGENT); |
citrusbyte | 19:4dfa28d37b8f | 251 | _client->print("X-M2X-KEY: "); |
citrusbyte | 19:4dfa28d37b8f | 252 | _client->println(_key); |
citrusbyte | 19:4dfa28d37b8f | 253 | |
citrusbyte | 19:4dfa28d37b8f | 254 | _client->print("Host: "); |
citrusbyte | 19:4dfa28d37b8f | 255 | print_encoded_string(_client, _host); |
citrusbyte | 19:4dfa28d37b8f | 256 | if (_port != kDefaultM2XPort) { |
citrusbyte | 19:4dfa28d37b8f | 257 | _client->print(":"); |
citrusbyte | 19:4dfa28d37b8f | 258 | // port is an integer, does not need encoding |
citrusbyte | 19:4dfa28d37b8f | 259 | _client->print(_port); |
citrusbyte | 19:4dfa28d37b8f | 260 | } |
citrusbyte | 19:4dfa28d37b8f | 261 | _client->println(); |
citrusbyte | 19:4dfa28d37b8f | 262 | |
citrusbyte | 19:4dfa28d37b8f | 263 | if (contentLength > 0) { |
citrusbyte | 19:4dfa28d37b8f | 264 | _client->println("Content-Type: application/json"); |
citrusbyte | 19:4dfa28d37b8f | 265 | DBG("%s", "Content Length: "); |
citrusbyte | 19:4dfa28d37b8f | 266 | DBGLN("%d", contentLength); |
citrusbyte | 19:4dfa28d37b8f | 267 | |
citrusbyte | 19:4dfa28d37b8f | 268 | _client->print("Content-Length: "); |
citrusbyte | 19:4dfa28d37b8f | 269 | _client->println(contentLength); |
citrusbyte | 19:4dfa28d37b8f | 270 | } |
citrusbyte | 19:4dfa28d37b8f | 271 | _client->println(); |
citrusbyte | 17:9db4a86b876a | 272 | } |
citrusbyte | 19:4dfa28d37b8f | 273 | |
citrusbyte | 19:4dfa28d37b8f | 274 | int M2XStreamClient::waitForString(const char* str) { |
citrusbyte | 19:4dfa28d37b8f | 275 | int currentIndex = 0; |
citrusbyte | 19:4dfa28d37b8f | 276 | if (str[currentIndex] == '\0') return E_OK; |
citrusbyte | 19:4dfa28d37b8f | 277 | |
citrusbyte | 19:4dfa28d37b8f | 278 | while (true) { |
citrusbyte | 19:4dfa28d37b8f | 279 | while (_client->available()) { |
citrusbyte | 19:4dfa28d37b8f | 280 | char c = _client->read(); |
citrusbyte | 19:4dfa28d37b8f | 281 | DBG("%c", c); |
citrusbyte | 19:4dfa28d37b8f | 282 | |
citrusbyte | 19:4dfa28d37b8f | 283 | int cmp; |
citrusbyte | 19:4dfa28d37b8f | 284 | if (_case_insensitive) { |
citrusbyte | 19:4dfa28d37b8f | 285 | cmp = tolower(c) - tolower(str[currentIndex]); |
citrusbyte | 19:4dfa28d37b8f | 286 | } else { |
citrusbyte | 19:4dfa28d37b8f | 287 | cmp = c - str[currentIndex]; |
citrusbyte | 19:4dfa28d37b8f | 288 | } |
jb8414 | 0:f479e4f4db0e | 289 | |
citrusbyte | 19:4dfa28d37b8f | 290 | if ((str[currentIndex] == '*') || (cmp == 0)) { |
citrusbyte | 19:4dfa28d37b8f | 291 | currentIndex++; |
citrusbyte | 19:4dfa28d37b8f | 292 | if (str[currentIndex] == '\0') { |
citrusbyte | 19:4dfa28d37b8f | 293 | return E_OK; |
citrusbyte | 19:4dfa28d37b8f | 294 | } |
citrusbyte | 19:4dfa28d37b8f | 295 | } else { |
citrusbyte | 19:4dfa28d37b8f | 296 | // start from the beginning |
citrusbyte | 19:4dfa28d37b8f | 297 | currentIndex = 0; |
citrusbyte | 19:4dfa28d37b8f | 298 | } |
citrusbyte | 19:4dfa28d37b8f | 299 | } |
citrusbyte | 19:4dfa28d37b8f | 300 | |
citrusbyte | 19:4dfa28d37b8f | 301 | if (!_client->connected()) { |
citrusbyte | 19:4dfa28d37b8f | 302 | DBGLN("%s", "ERROR: The client is disconnected from the server!"); |
citrusbyte | 19:4dfa28d37b8f | 303 | |
citrusbyte | 19:4dfa28d37b8f | 304 | close(); |
citrusbyte | 19:4dfa28d37b8f | 305 | return E_DISCONNECTED; |
citrusbyte | 19:4dfa28d37b8f | 306 | } |
citrusbyte | 19:4dfa28d37b8f | 307 | |
citrusbyte | 19:4dfa28d37b8f | 308 | delay(1000); |
citrusbyte | 19:4dfa28d37b8f | 309 | } |
citrusbyte | 19:4dfa28d37b8f | 310 | // never reached here |
citrusbyte | 19:4dfa28d37b8f | 311 | return E_NOTREACHABLE; |
citrusbyte | 19:4dfa28d37b8f | 312 | } |
jb8414 | 0:f479e4f4db0e | 313 | |
citrusbyte | 19:4dfa28d37b8f | 314 | int M2XStreamClient::readStatusCode(bool closeClient) { |
citrusbyte | 19:4dfa28d37b8f | 315 | int responseCode = 0; |
citrusbyte | 19:4dfa28d37b8f | 316 | int ret = waitForString("HTTP/*.* "); |
citrusbyte | 19:4dfa28d37b8f | 317 | if (ret != E_OK) { |
citrusbyte | 19:4dfa28d37b8f | 318 | if (closeClient) close(); |
citrusbyte | 19:4dfa28d37b8f | 319 | return ret; |
citrusbyte | 19:4dfa28d37b8f | 320 | } |
citrusbyte | 19:4dfa28d37b8f | 321 | |
citrusbyte | 19:4dfa28d37b8f | 322 | // ret is not needed from here(since it must be E_OK), so we can use it |
citrusbyte | 19:4dfa28d37b8f | 323 | // as a regular variable now. |
citrusbyte | 19:4dfa28d37b8f | 324 | ret = 0; |
citrusbyte | 19:4dfa28d37b8f | 325 | while (true) { |
citrusbyte | 19:4dfa28d37b8f | 326 | while (_client->available()) { |
citrusbyte | 19:4dfa28d37b8f | 327 | char c = _client->read(); |
citrusbyte | 19:4dfa28d37b8f | 328 | DBG("%c", c); |
citrusbyte | 19:4dfa28d37b8f | 329 | |
citrusbyte | 19:4dfa28d37b8f | 330 | responseCode = responseCode * 10 + (c - '0'); |
citrusbyte | 19:4dfa28d37b8f | 331 | ret++; |
citrusbyte | 19:4dfa28d37b8f | 332 | if (ret == 3) { |
citrusbyte | 19:4dfa28d37b8f | 333 | if (closeClient) close(); |
citrusbyte | 19:4dfa28d37b8f | 334 | return responseCode; |
citrusbyte | 19:4dfa28d37b8f | 335 | } |
citrusbyte | 19:4dfa28d37b8f | 336 | } |
citrusbyte | 19:4dfa28d37b8f | 337 | |
citrusbyte | 19:4dfa28d37b8f | 338 | if (!_client->connected()) { |
citrusbyte | 19:4dfa28d37b8f | 339 | DBGLN("%s", "ERROR: The client is disconnected from the server!"); |
citrusbyte | 19:4dfa28d37b8f | 340 | |
citrusbyte | 19:4dfa28d37b8f | 341 | if (closeClient) close(); |
citrusbyte | 19:4dfa28d37b8f | 342 | return E_DISCONNECTED; |
citrusbyte | 19:4dfa28d37b8f | 343 | } |
citrusbyte | 19:4dfa28d37b8f | 344 | |
citrusbyte | 19:4dfa28d37b8f | 345 | delay(1000); |
jb8414 | 0:f479e4f4db0e | 346 | } |
jb8414 | 0:f479e4f4db0e | 347 | |
citrusbyte | 19:4dfa28d37b8f | 348 | // never reached here |
citrusbyte | 19:4dfa28d37b8f | 349 | return E_NOTREACHABLE; |
citrusbyte | 19:4dfa28d37b8f | 350 | } |
jb8414 | 0:f479e4f4db0e | 351 | |
citrusbyte | 19:4dfa28d37b8f | 352 | int M2XStreamClient::readContentLength() { |
citrusbyte | 19:4dfa28d37b8f | 353 | int ret = waitForString("Content-Length: "); |
citrusbyte | 19:4dfa28d37b8f | 354 | if (ret != E_OK) { |
citrusbyte | 19:4dfa28d37b8f | 355 | return ret; |
citrusbyte | 19:4dfa28d37b8f | 356 | } |
jb8414 | 0:f479e4f4db0e | 357 | |
citrusbyte | 19:4dfa28d37b8f | 358 | // From now on, ret is not needed, we can use it |
citrusbyte | 19:4dfa28d37b8f | 359 | // to keep the final result |
citrusbyte | 19:4dfa28d37b8f | 360 | ret = 0; |
citrusbyte | 19:4dfa28d37b8f | 361 | while (true) { |
citrusbyte | 19:4dfa28d37b8f | 362 | while (_client->available()) { |
citrusbyte | 19:4dfa28d37b8f | 363 | char c = _client->read(); |
citrusbyte | 19:4dfa28d37b8f | 364 | DBG("%c", c); |
jb8414 | 0:f479e4f4db0e | 365 | |
citrusbyte | 19:4dfa28d37b8f | 366 | if ((c == '\r') || (c == '\n')) { |
citrusbyte | 19:4dfa28d37b8f | 367 | return (ret == 0) ? (E_INVALID) : (ret); |
citrusbyte | 19:4dfa28d37b8f | 368 | } else { |
citrusbyte | 19:4dfa28d37b8f | 369 | ret = ret * 10 + (c - '0'); |
citrusbyte | 19:4dfa28d37b8f | 370 | } |
citrusbyte | 19:4dfa28d37b8f | 371 | } |
citrusbyte | 19:4dfa28d37b8f | 372 | |
citrusbyte | 19:4dfa28d37b8f | 373 | if (!_client->connected()) { |
citrusbyte | 19:4dfa28d37b8f | 374 | DBGLN("%s", "ERROR: The client is disconnected from the server!"); |
citrusbyte | 19:4dfa28d37b8f | 375 | |
citrusbyte | 19:4dfa28d37b8f | 376 | return E_DISCONNECTED; |
jb8414 | 0:f479e4f4db0e | 377 | } |
citrusbyte | 10:4ce9eba38dbe | 378 | |
citrusbyte | 19:4dfa28d37b8f | 379 | delay(1000); |
jb8414 | 0:f479e4f4db0e | 380 | } |
citrusbyte | 19:4dfa28d37b8f | 381 | |
citrusbyte | 19:4dfa28d37b8f | 382 | // never reached here |
citrusbyte | 19:4dfa28d37b8f | 383 | return E_NOTREACHABLE; |
citrusbyte | 19:4dfa28d37b8f | 384 | } |
citrusbyte | 19:4dfa28d37b8f | 385 | |
citrusbyte | 19:4dfa28d37b8f | 386 | int M2XStreamClient::skipHttpHeader() { |
citrusbyte | 19:4dfa28d37b8f | 387 | return waitForString("\n\r\n"); |
citrusbyte | 19:4dfa28d37b8f | 388 | } |
citrusbyte | 19:4dfa28d37b8f | 389 | |
citrusbyte | 19:4dfa28d37b8f | 390 | void M2XStreamClient::close() { |
citrusbyte | 19:4dfa28d37b8f | 391 | // Eats up buffered data before closing |
citrusbyte | 19:4dfa28d37b8f | 392 | _client->flush(); |
citrusbyte | 19:4dfa28d37b8f | 393 | _client->stop(); |
citrusbyte | 19:4dfa28d37b8f | 394 | } |
citrusbyte | 19:4dfa28d37b8f | 395 | |
citrusbyte | 19:4dfa28d37b8f | 396 | int M2XStreamClient::readStreamValue(stream_value_read_callback callback, |
citrusbyte | 19:4dfa28d37b8f | 397 | void* context) { |
citrusbyte | 19:4dfa28d37b8f | 398 | const int BUF_LEN = 64; |
citrusbyte | 19:4dfa28d37b8f | 399 | char buf[BUF_LEN]; |
citrusbyte | 19:4dfa28d37b8f | 400 | |
citrusbyte | 19:4dfa28d37b8f | 401 | int length = readContentLength(); |
citrusbyte | 19:4dfa28d37b8f | 402 | if (length < 0) { |
citrusbyte | 19:4dfa28d37b8f | 403 | close(); |
citrusbyte | 19:4dfa28d37b8f | 404 | return length; |
citrusbyte | 19:4dfa28d37b8f | 405 | } |
jb8414 | 0:f479e4f4db0e | 406 | |
citrusbyte | 19:4dfa28d37b8f | 407 | int index = skipHttpHeader(); |
citrusbyte | 19:4dfa28d37b8f | 408 | if (index != E_OK) { |
citrusbyte | 19:4dfa28d37b8f | 409 | close(); |
citrusbyte | 19:4dfa28d37b8f | 410 | return index; |
citrusbyte | 19:4dfa28d37b8f | 411 | } |
citrusbyte | 19:4dfa28d37b8f | 412 | index = 0; |
citrusbyte | 19:4dfa28d37b8f | 413 | |
citrusbyte | 19:4dfa28d37b8f | 414 | stream_parsing_context_state state; |
citrusbyte | 19:4dfa28d37b8f | 415 | state.state = state.index = 0; |
citrusbyte | 19:4dfa28d37b8f | 416 | state.callback = callback; |
citrusbyte | 19:4dfa28d37b8f | 417 | state.context = context; |
citrusbyte | 19:4dfa28d37b8f | 418 | |
citrusbyte | 19:4dfa28d37b8f | 419 | jsonlite_parser_callbacks cbs = jsonlite_default_callbacks; |
citrusbyte | 19:4dfa28d37b8f | 420 | cbs.key_found = on_stream_key_found; |
citrusbyte | 19:4dfa28d37b8f | 421 | cbs.number_found = on_stream_number_found; |
citrusbyte | 19:4dfa28d37b8f | 422 | cbs.string_found = on_stream_string_found; |
citrusbyte | 19:4dfa28d37b8f | 423 | cbs.context.client_state = &state; |
jb8414 | 0:f479e4f4db0e | 424 | |
citrusbyte | 19:4dfa28d37b8f | 425 | jsonlite_parser p = jsonlite_parser_init(jsonlite_parser_estimate_size(5)); |
citrusbyte | 19:4dfa28d37b8f | 426 | jsonlite_parser_set_callback(p, &cbs); |
citrusbyte | 19:4dfa28d37b8f | 427 | |
citrusbyte | 19:4dfa28d37b8f | 428 | jsonlite_result result = jsonlite_result_unknown; |
citrusbyte | 19:4dfa28d37b8f | 429 | while (index < length) { |
citrusbyte | 19:4dfa28d37b8f | 430 | int i = 0; |
citrusbyte | 19:4dfa28d37b8f | 431 | |
citrusbyte | 19:4dfa28d37b8f | 432 | DBG("%s", "Received Data: "); |
citrusbyte | 19:4dfa28d37b8f | 433 | while ((i < BUF_LEN) && _client->available()) { |
citrusbyte | 19:4dfa28d37b8f | 434 | buf[i++] = _client->read(); |
citrusbyte | 19:4dfa28d37b8f | 435 | DBG("%c", buf[i - 1]); |
citrusbyte | 19:4dfa28d37b8f | 436 | } |
citrusbyte | 19:4dfa28d37b8f | 437 | DBGLNEND; |
citrusbyte | 19:4dfa28d37b8f | 438 | |
citrusbyte | 19:4dfa28d37b8f | 439 | if ((!_client->connected()) && |
citrusbyte | 19:4dfa28d37b8f | 440 | (!_client->available()) && |
citrusbyte | 19:4dfa28d37b8f | 441 | ((index + i) < length)) { |
citrusbyte | 19:4dfa28d37b8f | 442 | jsonlite_parser_release(p); |
citrusbyte | 19:4dfa28d37b8f | 443 | close(); |
citrusbyte | 19:4dfa28d37b8f | 444 | return E_NOCONNECTION; |
citrusbyte | 19:4dfa28d37b8f | 445 | } |
jb8414 | 0:f479e4f4db0e | 446 | |
citrusbyte | 19:4dfa28d37b8f | 447 | result = jsonlite_parser_tokenize(p, buf, i); |
citrusbyte | 19:4dfa28d37b8f | 448 | if ((result != jsonlite_result_ok) && |
citrusbyte | 19:4dfa28d37b8f | 449 | (result != jsonlite_result_end_of_stream)) { |
citrusbyte | 19:4dfa28d37b8f | 450 | jsonlite_parser_release(p); |
citrusbyte | 19:4dfa28d37b8f | 451 | close(); |
citrusbyte | 19:4dfa28d37b8f | 452 | return E_JSON_INVALID; |
citrusbyte | 19:4dfa28d37b8f | 453 | } |
citrusbyte | 19:4dfa28d37b8f | 454 | |
citrusbyte | 19:4dfa28d37b8f | 455 | index += i; |
citrusbyte | 19:4dfa28d37b8f | 456 | } |
citrusbyte | 19:4dfa28d37b8f | 457 | |
citrusbyte | 19:4dfa28d37b8f | 458 | jsonlite_parser_release(p); |
citrusbyte | 19:4dfa28d37b8f | 459 | close(); |
citrusbyte | 19:4dfa28d37b8f | 460 | return (result == jsonlite_result_ok) ? (E_OK) : (E_JSON_INVALID); |
citrusbyte | 19:4dfa28d37b8f | 461 | } |
citrusbyte | 19:4dfa28d37b8f | 462 | |
citrusbyte | 19:4dfa28d37b8f | 463 | int M2XStreamClient::readLocation(location_read_callback callback, |
citrusbyte | 19:4dfa28d37b8f | 464 | void* context) { |
citrusbyte | 19:4dfa28d37b8f | 465 | const int BUF_LEN = 40; |
citrusbyte | 19:4dfa28d37b8f | 466 | char buf[BUF_LEN]; |
citrusbyte | 19:4dfa28d37b8f | 467 | |
citrusbyte | 19:4dfa28d37b8f | 468 | int length = readContentLength(); |
citrusbyte | 19:4dfa28d37b8f | 469 | if (length < 0) { |
citrusbyte | 19:4dfa28d37b8f | 470 | close(); |
citrusbyte | 19:4dfa28d37b8f | 471 | return length; |
citrusbyte | 19:4dfa28d37b8f | 472 | } |
citrusbyte | 19:4dfa28d37b8f | 473 | |
citrusbyte | 19:4dfa28d37b8f | 474 | int index = skipHttpHeader(); |
citrusbyte | 19:4dfa28d37b8f | 475 | if (index != E_OK) { |
citrusbyte | 19:4dfa28d37b8f | 476 | close(); |
citrusbyte | 19:4dfa28d37b8f | 477 | return index; |
citrusbyte | 19:4dfa28d37b8f | 478 | } |
citrusbyte | 19:4dfa28d37b8f | 479 | index = 0; |
citrusbyte | 19:4dfa28d37b8f | 480 | |
citrusbyte | 19:4dfa28d37b8f | 481 | location_parsing_context_state state; |
citrusbyte | 19:4dfa28d37b8f | 482 | state.state = state.index = 0; |
citrusbyte | 19:4dfa28d37b8f | 483 | state.callback = callback; |
citrusbyte | 19:4dfa28d37b8f | 484 | state.context = context; |
jb8414 | 0:f479e4f4db0e | 485 | |
citrusbyte | 19:4dfa28d37b8f | 486 | jsonlite_parser_callbacks cbs = jsonlite_default_callbacks; |
citrusbyte | 19:4dfa28d37b8f | 487 | cbs.key_found = on_location_key_found; |
citrusbyte | 19:4dfa28d37b8f | 488 | cbs.string_found = on_location_string_found; |
citrusbyte | 19:4dfa28d37b8f | 489 | cbs.context.client_state = &state; |
citrusbyte | 19:4dfa28d37b8f | 490 | |
citrusbyte | 19:4dfa28d37b8f | 491 | jsonlite_parser p = jsonlite_parser_init(jsonlite_parser_estimate_size(5)); |
citrusbyte | 19:4dfa28d37b8f | 492 | jsonlite_parser_set_callback(p, &cbs); |
citrusbyte | 19:4dfa28d37b8f | 493 | |
citrusbyte | 19:4dfa28d37b8f | 494 | jsonlite_result result = jsonlite_result_unknown; |
citrusbyte | 19:4dfa28d37b8f | 495 | while (index < length) { |
citrusbyte | 19:4dfa28d37b8f | 496 | int i = 0; |
citrusbyte | 19:4dfa28d37b8f | 497 | |
citrusbyte | 19:4dfa28d37b8f | 498 | DBG("%s", "Received Data: "); |
citrusbyte | 19:4dfa28d37b8f | 499 | while ((i < BUF_LEN) && _client->available()) { |
citrusbyte | 19:4dfa28d37b8f | 500 | buf[i++] = _client->read(); |
citrusbyte | 19:4dfa28d37b8f | 501 | DBG("%c", buf[i - 1]); |
citrusbyte | 19:4dfa28d37b8f | 502 | } |
citrusbyte | 19:4dfa28d37b8f | 503 | DBGLNEND; |
jb8414 | 0:f479e4f4db0e | 504 | |
citrusbyte | 19:4dfa28d37b8f | 505 | if ((!_client->connected()) && |
citrusbyte | 19:4dfa28d37b8f | 506 | (!_client->available()) && |
citrusbyte | 19:4dfa28d37b8f | 507 | ((index + i) < length)) { |
citrusbyte | 19:4dfa28d37b8f | 508 | jsonlite_parser_release(p); |
citrusbyte | 19:4dfa28d37b8f | 509 | close(); |
citrusbyte | 19:4dfa28d37b8f | 510 | return E_NOCONNECTION; |
citrusbyte | 19:4dfa28d37b8f | 511 | } |
citrusbyte | 19:4dfa28d37b8f | 512 | |
citrusbyte | 19:4dfa28d37b8f | 513 | result = jsonlite_parser_tokenize(p, buf, i); |
citrusbyte | 19:4dfa28d37b8f | 514 | if ((result != jsonlite_result_ok) && |
citrusbyte | 19:4dfa28d37b8f | 515 | (result != jsonlite_result_end_of_stream)) { |
citrusbyte | 19:4dfa28d37b8f | 516 | jsonlite_parser_release(p); |
citrusbyte | 19:4dfa28d37b8f | 517 | close(); |
citrusbyte | 19:4dfa28d37b8f | 518 | return E_JSON_INVALID; |
citrusbyte | 19:4dfa28d37b8f | 519 | } |
citrusbyte | 19:4dfa28d37b8f | 520 | |
citrusbyte | 19:4dfa28d37b8f | 521 | index += i; |
citrusbyte | 19:4dfa28d37b8f | 522 | } |
citrusbyte | 19:4dfa28d37b8f | 523 | |
citrusbyte | 19:4dfa28d37b8f | 524 | jsonlite_parser_release(p); |
citrusbyte | 19:4dfa28d37b8f | 525 | close(); |
citrusbyte | 19:4dfa28d37b8f | 526 | return (result == jsonlite_result_ok) ? (E_OK) : (E_JSON_INVALID); |
jb8414 | 0:f479e4f4db0e | 527 | } |