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// The MIT License (MIT)
//
// Copyright (c) 2015 Adafruit Industries
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#include "Adafruit_MQTT_Client.h"
bool Adafruit_MQTT_Client::connectServer() {
// Grab server name from flash and copy to buffer for name resolution.
memset(buffer, 0, sizeof(buffer));
strcpy((char *)buffer, servername);
DEBUG_PRINT(F("Connecting to: ")); DEBUG_PRINTLN((char *)buffer);
// Connect and check for success (0 result).
int r = client->connect((char *)buffer, portnum);
DEBUG_PRINT(F("Connect result: ")); DEBUG_PRINTLN(r);
return r != 0;
}
bool Adafruit_MQTT_Client::disconnectServer() {
// Stop connection if connected and return success (stop has no indication of
// failure).
if (client->connected()) {
client->stop();
}
return true;
}
bool Adafruit_MQTT_Client::connected() {
// Return true if connected, false if not connected.
return client->connected();
}
uint16_t Adafruit_MQTT_Client::readPacket(uint8_t *buffer, uint16_t maxlen,
int16_t timeout) {
/* Read data until either the connection is closed, or the idle timeout is reached. */
uint16_t len = 0;
int16_t t = timeout;
while (client->connected() && (timeout >= 0)) {
//DEBUG_PRINT('.');
while (client->available()) {
//DEBUG_PRINT('!');
char c = client->read();
timeout = t; // reset the timeout
buffer[len] = c;
//DEBUG_PRINTLN((uint8_t)c, HEX);
len++;
if (len == maxlen) { // we read all we want, bail
DEBUG_PRINT(F("Read data:\t"));
DEBUG_PRINTBUFFER(buffer, len);
return len;
}
}
timeout -= MQTT_CLIENT_READINTERVAL_MS;
delay(MQTT_CLIENT_READINTERVAL_MS);
}
return len;
}
bool Adafruit_MQTT_Client::sendPacket(uint8_t *buffer, uint16_t len) {
uint16_t ret = 0;
while (len > 0) {
if (client->connected()) {
// send 250 bytes at most at a time, can adjust this later based on Client
uint16_t sendlen = len > 250 ? 250 : len;
//Serial.print("Sending: "); Serial.println(sendlen);
ret = client->write(buffer, sendlen);
DEBUG_PRINT(F("Client sendPacket returned: ")); DEBUG_PRINTLN(ret);
len -= ret;
if (ret != sendlen) {
DEBUG_PRINTLN("Failed to send packet.");
return false;
}
} else {
DEBUG_PRINTLN(F("Connection failed!"));
return false;
}
}
return true;
}