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