arduino/Adafruit_MQTT_Library
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Support publishing and receiving large messages. Send multiple 250 byte packets (ref PR#113) for larger messages. Correctly identify topic start position for >127byte messages (ref PR#166). Resolves issue #102

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xdylanm
2021-05-12 21:31:22 -07:00
parent e8922f60a9
commit 2ea8a0b3fc
2 changed files with 29 additions and 10 deletions
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7
Adafruit_MQTT_Client.cpp
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@ -83,18 +83,19 @@ uint16_t Adafruit_MQTT_Client::readPacket(uint8_t *buffer, uint16_t maxlen,
bool Adafruit_MQTT_Client::sendPacket(uint8_t *buffer, uint16_t len) {
uint16_t ret = 0;
uint16_t offset = 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);
ret = client->write(buffer + offset, sendlen);
DEBUG_PRINT(F("Client sendPacket returned: "));
DEBUG_PRINTLN(ret);
len -= ret;
offset += ret;
if (ret != sendlen) {
DEBUG_PRINTLN("Failed to send packet.");
return false;