Jeon byungchul / Mbed OS aws-iot-example

this is fork and i will modify for STM32

Fork of AWS-test by Pierre-Marie Ancèle

aws-iot/src/aws_iot_mqtt_client_yield.cpp@0:cd5404401c2f, 2017-04-12 (annotated)

Committer:
peyo
Date:
Wed Apr 12 14:07:09 2017 +0200
Revision:
0:cd5404401c2f
Child:
2:db59f45ad3d3
first commit

Who changed what in which revision?

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peyo 0:cd5404401c2f 1 /*
peyo 0:cd5404401c2f 2 * Copyright 2015-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
peyo 0:cd5404401c2f 3 *
peyo 0:cd5404401c2f 4 * Licensed under the Apache License, Version 2.0 (the "License").
peyo 0:cd5404401c2f 5 * You may not use this file except in compliance with the License.
peyo 0:cd5404401c2f 6 * A copy of the License is located at
peyo 0:cd5404401c2f 7 *
peyo 0:cd5404401c2f 8 * http://aws.amazon.com/apache2.0
peyo 0:cd5404401c2f 9 *
peyo 0:cd5404401c2f 10 * or in the "license" file accompanying this file. This file is distributed
peyo 0:cd5404401c2f 11 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
peyo 0:cd5404401c2f 12 * express or implied. See the License for the specific language governing
peyo 0:cd5404401c2f 13 * permissions and limitations under the License.
peyo 0:cd5404401c2f 14 */
peyo 0:cd5404401c2f 15
peyo 0:cd5404401c2f 16 // Based on Eclipse Paho.
peyo 0:cd5404401c2f 17 /*******************************************************************************
peyo 0:cd5404401c2f 18 * Copyright (c) 2014 IBM Corp.
peyo 0:cd5404401c2f 19 *
peyo 0:cd5404401c2f 20 * All rights reserved. This program and the accompanying materials
peyo 0:cd5404401c2f 21 * are made available under the terms of the Eclipse Public License v1.0
peyo 0:cd5404401c2f 22 * and Eclipse Distribution License v1.0 which accompany this distribution.
peyo 0:cd5404401c2f 23 *
peyo 0:cd5404401c2f 24 * The Eclipse Public License is available at
peyo 0:cd5404401c2f 25 * http://www.eclipse.org/legal/epl-v10.html
peyo 0:cd5404401c2f 26 * and the Eclipse Distribution License is available at
peyo 0:cd5404401c2f 27 * http://www.eclipse.org/org/documents/edl-v10.php.
peyo 0:cd5404401c2f 28 *
peyo 0:cd5404401c2f 29 * Contributors:
peyo 0:cd5404401c2f 30 * Allan Stockdill-Mander/Ian Craggs - initial API and implementation and/or initial documentation
peyo 0:cd5404401c2f 31 *******************************************************************************/
peyo 0:cd5404401c2f 32
peyo 0:cd5404401c2f 33 /**
peyo 0:cd5404401c2f 34 * @file aws_iot_mqtt_client_yield.c
peyo 0:cd5404401c2f 35 * @brief MQTT client yield API definitions
peyo 0:cd5404401c2f 36 */
peyo 0:cd5404401c2f 37
peyo 0:cd5404401c2f 38 #ifdef __cplusplus
peyo 0:cd5404401c2f 39 extern "C" {
peyo 0:cd5404401c2f 40 #endif
peyo 0:cd5404401c2f 41
peyo 0:cd5404401c2f 42 #include "aws_iot_mqtt_client_common_internal.h"
peyo 0:cd5404401c2f 43
peyo 0:cd5404401c2f 44 /**
peyo 0:cd5404401c2f 45 * This is for the case when the aws_iot_mqtt_internal_send_packet Fails.
peyo 0:cd5404401c2f 46 */
peyo 0:cd5404401c2f 47 static void _aws_iot_mqtt_force_client_disconnect(AWS_IoT_Client *pClient) {
peyo 0:cd5404401c2f 48 pClient->clientStatus.clientState = CLIENT_STATE_DISCONNECTED_ERROR;
peyo 0:cd5404401c2f 49 pClient->networkStack.disconnect(&(pClient->networkStack));
peyo 0:cd5404401c2f 50 pClient->networkStack.destroy(&(pClient->networkStack));
peyo 0:cd5404401c2f 51 }
peyo 0:cd5404401c2f 52
peyo 0:cd5404401c2f 53 static IoT_Error_t _aws_iot_mqtt_handle_disconnect(AWS_IoT_Client *pClient) {
peyo 0:cd5404401c2f 54 IoT_Error_t rc;
peyo 0:cd5404401c2f 55
peyo 0:cd5404401c2f 56 FUNC_ENTRY;
peyo 0:cd5404401c2f 57
peyo 0:cd5404401c2f 58 rc = aws_iot_mqtt_disconnect(pClient);
peyo 0:cd5404401c2f 59 if(rc != SUCCESS) {
peyo 0:cd5404401c2f 60 // If the aws_iot_mqtt_internal_send_packet prevents us from sending a disconnect packet then we have to clean the stack
peyo 0:cd5404401c2f 61 _aws_iot_mqtt_force_client_disconnect(pClient);
peyo 0:cd5404401c2f 62 }
peyo 0:cd5404401c2f 63
peyo 0:cd5404401c2f 64 if(NULL != pClient->clientData.disconnectHandler) {
peyo 0:cd5404401c2f 65 pClient->clientData.disconnectHandler(pClient, pClient->clientData.disconnectHandlerData);
peyo 0:cd5404401c2f 66 }
peyo 0:cd5404401c2f 67
peyo 0:cd5404401c2f 68 /* Reset to 0 since this was not a manual disconnect */
peyo 0:cd5404401c2f 69 pClient->clientStatus.clientState = CLIENT_STATE_DISCONNECTED_ERROR;
peyo 0:cd5404401c2f 70 FUNC_EXIT_RC(NETWORK_DISCONNECTED_ERROR);
peyo 0:cd5404401c2f 71 }
peyo 0:cd5404401c2f 72
peyo 0:cd5404401c2f 73
peyo 0:cd5404401c2f 74 static IoT_Error_t _aws_iot_mqtt_handle_reconnect(AWS_IoT_Client *pClient) {
peyo 0:cd5404401c2f 75 IoT_Error_t rc;
peyo 0:cd5404401c2f 76
peyo 0:cd5404401c2f 77 FUNC_ENTRY;
peyo 0:cd5404401c2f 78
peyo 0:cd5404401c2f 79 if(!has_timer_expired(&(pClient->reconnectDelayTimer))) {
peyo 0:cd5404401c2f 80 /* Timer has not expired. Not time to attempt reconnect yet.
peyo 0:cd5404401c2f 81 * Return attempting reconnect */
peyo 0:cd5404401c2f 82 FUNC_EXIT_RC(NETWORK_ATTEMPTING_RECONNECT);
peyo 0:cd5404401c2f 83 }
peyo 0:cd5404401c2f 84
peyo 0:cd5404401c2f 85 rc = NETWORK_PHYSICAL_LAYER_DISCONNECTED;
peyo 0:cd5404401c2f 86 if(NULL != pClient->networkStack.isConnected) {
peyo 0:cd5404401c2f 87 rc = pClient->networkStack.isConnected(&(pClient->networkStack));
peyo 0:cd5404401c2f 88 }
peyo 0:cd5404401c2f 89
peyo 0:cd5404401c2f 90 if(NETWORK_PHYSICAL_LAYER_CONNECTED == rc) {
peyo 0:cd5404401c2f 91 rc = aws_iot_mqtt_attempt_reconnect(pClient);
peyo 0:cd5404401c2f 92 if(NETWORK_RECONNECTED == rc) {
peyo 0:cd5404401c2f 93 rc = aws_iot_mqtt_set_client_state(pClient, CLIENT_STATE_CONNECTED_IDLE,
peyo 0:cd5404401c2f 94 CLIENT_STATE_CONNECTED_YIELD_IN_PROGRESS);
peyo 0:cd5404401c2f 95 if(SUCCESS != rc) {
peyo 0:cd5404401c2f 96 FUNC_EXIT_RC(rc);
peyo 0:cd5404401c2f 97 }
peyo 0:cd5404401c2f 98 FUNC_EXIT_RC(NETWORK_RECONNECTED);
peyo 0:cd5404401c2f 99 }
peyo 0:cd5404401c2f 100 }
peyo 0:cd5404401c2f 101
peyo 0:cd5404401c2f 102 pClient->clientData.currentReconnectWaitInterval *= 2;
peyo 0:cd5404401c2f 103
peyo 0:cd5404401c2f 104 if(AWS_IOT_MQTT_MAX_RECONNECT_WAIT_INTERVAL < pClient->clientData.currentReconnectWaitInterval) {
peyo 0:cd5404401c2f 105 FUNC_EXIT_RC(NETWORK_RECONNECT_TIMED_OUT_ERROR);
peyo 0:cd5404401c2f 106 }
peyo 0:cd5404401c2f 107 countdown_ms(&(pClient->reconnectDelayTimer), pClient->clientData.currentReconnectWaitInterval);
peyo 0:cd5404401c2f 108 FUNC_EXIT_RC(rc);
peyo 0:cd5404401c2f 109 }
peyo 0:cd5404401c2f 110
peyo 0:cd5404401c2f 111 static IoT_Error_t _aws_iot_mqtt_keep_alive(AWS_IoT_Client *pClient) {
peyo 0:cd5404401c2f 112 IoT_Error_t rc = SUCCESS;
peyo 0:cd5404401c2f 113 TimerAWS timer;
peyo 0:cd5404401c2f 114 size_t serialized_len;
peyo 0:cd5404401c2f 115
peyo 0:cd5404401c2f 116 FUNC_ENTRY;
peyo 0:cd5404401c2f 117
peyo 0:cd5404401c2f 118 if(NULL == pClient) {
peyo 0:cd5404401c2f 119 FUNC_EXIT_RC(NULL_VALUE_ERROR);
peyo 0:cd5404401c2f 120 }
peyo 0:cd5404401c2f 121
peyo 0:cd5404401c2f 122 if(0 == pClient->clientData.keepAliveInterval) {
peyo 0:cd5404401c2f 123 FUNC_EXIT_RC(SUCCESS);
peyo 0:cd5404401c2f 124 }
peyo 0:cd5404401c2f 125
peyo 0:cd5404401c2f 126 if(!has_timer_expired(&pClient->pingTimer)) {
peyo 0:cd5404401c2f 127 FUNC_EXIT_RC(SUCCESS);
peyo 0:cd5404401c2f 128 }
peyo 0:cd5404401c2f 129
peyo 0:cd5404401c2f 130 if(pClient->clientStatus.isPingOutstanding) {
peyo 0:cd5404401c2f 131 rc = _aws_iot_mqtt_handle_disconnect(pClient);
peyo 0:cd5404401c2f 132 FUNC_EXIT_RC(rc);
peyo 0:cd5404401c2f 133 }
peyo 0:cd5404401c2f 134
peyo 0:cd5404401c2f 135 /* there is no ping outstanding - send one */
peyo 0:cd5404401c2f 136 init_timer(&timer);
peyo 0:cd5404401c2f 137
peyo 0:cd5404401c2f 138 countdown_ms(&timer, pClient->clientData.commandTimeoutMs);
peyo 0:cd5404401c2f 139 serialized_len = 0;
peyo 0:cd5404401c2f 140 rc = aws_iot_mqtt_internal_serialize_zero(pClient->clientData.writeBuf, pClient->clientData.writeBufSize,
peyo 0:cd5404401c2f 141 PINGREQ, &serialized_len);
peyo 0:cd5404401c2f 142 if(SUCCESS != rc) {
peyo 0:cd5404401c2f 143 FUNC_EXIT_RC(rc);
peyo 0:cd5404401c2f 144 }
peyo 0:cd5404401c2f 145
peyo 0:cd5404401c2f 146 /* send the ping packet */
peyo 0:cd5404401c2f 147 rc = aws_iot_mqtt_internal_send_packet(pClient, serialized_len, &timer);
peyo 0:cd5404401c2f 148 if(SUCCESS != rc) {
peyo 0:cd5404401c2f 149 //If sending a PING fails we can no longer determine if we are connected. In this case we decide we are disconnected and begin reconnection attempts
peyo 0:cd5404401c2f 150 rc = _aws_iot_mqtt_handle_disconnect(pClient);
peyo 0:cd5404401c2f 151 FUNC_EXIT_RC(rc);
peyo 0:cd5404401c2f 152 }
peyo 0:cd5404401c2f 153
peyo 0:cd5404401c2f 154 pClient->clientStatus.isPingOutstanding = true;
peyo 0:cd5404401c2f 155 /* start a timer to wait for PINGRESP from server */
peyo 0:cd5404401c2f 156 countdown_sec(&pClient->pingTimer, pClient->clientData.keepAliveInterval);
peyo 0:cd5404401c2f 157
peyo 0:cd5404401c2f 158 FUNC_EXIT_RC(SUCCESS);
peyo 0:cd5404401c2f 159 }
peyo 0:cd5404401c2f 160
peyo 0:cd5404401c2f 161 /**
peyo 0:cd5404401c2f 162 * @brief Yield to the MQTT client
peyo 0:cd5404401c2f 163 *
peyo 0:cd5404401c2f 164 * Called to yield the current thread to the underlying MQTT client. This time is used by
peyo 0:cd5404401c2f 165 * the MQTT client to manage PING requests to monitor the health of the TCP connection as
peyo 0:cd5404401c2f 166 * well as periodically check the socket receive buffer for subscribe messages. Yield()
peyo 0:cd5404401c2f 167 * must be called at a rate faster than the keepalive interval. It must also be called
peyo 0:cd5404401c2f 168 * at a rate faster than the incoming message rate as this is the only way the client receives
peyo 0:cd5404401c2f 169 * processing time to manage incoming messages.
peyo 0:cd5404401c2f 170 * This is the internal function which is called by the yield API to perform the operation.
peyo 0:cd5404401c2f 171 * Not meant to be called directly as it doesn't do validations or client state changes
peyo 0:cd5404401c2f 172 *
peyo 0:cd5404401c2f 173 * @param pClient Reference to the IoT Client
peyo 0:cd5404401c2f 174 * @param timeout_ms Maximum number of milliseconds to pass thread execution to the client.
peyo 0:cd5404401c2f 175 *
peyo 0:cd5404401c2f 176 * @return An IoT Error Type defining successful/failed client processing.
peyo 0:cd5404401c2f 177 * If this call results in an error it is likely the MQTT connection has dropped.
peyo 0:cd5404401c2f 178 * iot_is_mqtt_connected can be called to confirm.
peyo 0:cd5404401c2f 179 */
peyo 0:cd5404401c2f 180 static IoT_Error_t _aws_iot_mqtt_internal_yield(AWS_IoT_Client *pClient, uint32_t timeout_ms) {
peyo 0:cd5404401c2f 181 IoT_Error_t yieldRc = SUCCESS;
peyo 0:cd5404401c2f 182
peyo 0:cd5404401c2f 183 uint8_t packet_type;
peyo 0:cd5404401c2f 184 ClientState clientState;
peyo 0:cd5404401c2f 185 TimerAWS timer;
peyo 0:cd5404401c2f 186 init_timer(&timer);
peyo 0:cd5404401c2f 187 countdown_ms(&timer, timeout_ms);
peyo 0:cd5404401c2f 188
peyo 0:cd5404401c2f 189 FUNC_ENTRY;
peyo 0:cd5404401c2f 190
peyo 0:cd5404401c2f 191 // evaluate timeout at the end of the loop to make sure the actual yield runs at least once
peyo 0:cd5404401c2f 192 do {
peyo 0:cd5404401c2f 193 clientState = aws_iot_mqtt_get_client_state(pClient);
peyo 0:cd5404401c2f 194 if(CLIENT_STATE_PENDING_RECONNECT == clientState) {
peyo 0:cd5404401c2f 195 if(AWS_IOT_MQTT_MAX_RECONNECT_WAIT_INTERVAL < pClient->clientData.currentReconnectWaitInterval) {
peyo 0:cd5404401c2f 196 yieldRc = NETWORK_RECONNECT_TIMED_OUT_ERROR;
peyo 0:cd5404401c2f 197 break;
peyo 0:cd5404401c2f 198 }
peyo 0:cd5404401c2f 199 yieldRc = _aws_iot_mqtt_handle_reconnect(pClient);
peyo 0:cd5404401c2f 200 /* Network reconnect attempted, check if yield timer expired before
peyo 0:cd5404401c2f 201 * doing anything else */
peyo 0:cd5404401c2f 202 continue;
peyo 0:cd5404401c2f 203 }
peyo 0:cd5404401c2f 204
peyo 0:cd5404401c2f 205 yieldRc = aws_iot_mqtt_internal_cycle_read(pClient, &timer, &packet_type);
peyo 0:cd5404401c2f 206 if(SUCCESS == yieldRc) {
peyo 0:cd5404401c2f 207 yieldRc = _aws_iot_mqtt_keep_alive(pClient);
peyo 0:cd5404401c2f 208 } else {
peyo 0:cd5404401c2f 209 // SSL read and write errors are terminal, connection must be closed and retried
peyo 0:cd5404401c2f 210 if(NETWORK_SSL_READ_ERROR == yieldRc || NETWORK_SSL_READ_TIMEOUT_ERROR == yieldRc
peyo 0:cd5404401c2f 211 || NETWORK_SSL_WRITE_ERROR == yieldRc || NETWORK_SSL_WRITE_TIMEOUT_ERROR == yieldRc) {
peyo 0:cd5404401c2f 212 yieldRc = _aws_iot_mqtt_handle_disconnect(pClient);
peyo 0:cd5404401c2f 213 }
peyo 0:cd5404401c2f 214 }
peyo 0:cd5404401c2f 215
peyo 0:cd5404401c2f 216 if(NETWORK_DISCONNECTED_ERROR == yieldRc) {
peyo 0:cd5404401c2f 217 pClient->clientData.counterNetworkDisconnected++;
peyo 0:cd5404401c2f 218 if(1 == pClient->clientStatus.isAutoReconnectEnabled) {
peyo 0:cd5404401c2f 219 yieldRc = aws_iot_mqtt_set_client_state(pClient, CLIENT_STATE_DISCONNECTED_ERROR,
peyo 0:cd5404401c2f 220 CLIENT_STATE_PENDING_RECONNECT);
peyo 0:cd5404401c2f 221 if(SUCCESS != yieldRc) {
peyo 0:cd5404401c2f 222 FUNC_EXIT_RC(yieldRc);
peyo 0:cd5404401c2f 223 }
peyo 0:cd5404401c2f 224
peyo 0:cd5404401c2f 225 pClient->clientData.currentReconnectWaitInterval = AWS_IOT_MQTT_MIN_RECONNECT_WAIT_INTERVAL;
peyo 0:cd5404401c2f 226 countdown_ms(&(pClient->reconnectDelayTimer), pClient->clientData.currentReconnectWaitInterval);
peyo 0:cd5404401c2f 227 /* Depending on timer values, it is possible that yield timer has expired
peyo 0:cd5404401c2f 228 * Set to rc to attempting reconnect to inform client that autoreconnect
peyo 0:cd5404401c2f 229 * attempt has started */
peyo 0:cd5404401c2f 230 yieldRc = NETWORK_ATTEMPTING_RECONNECT;
peyo 0:cd5404401c2f 231 } else {
peyo 0:cd5404401c2f 232 break;
peyo 0:cd5404401c2f 233 }
peyo 0:cd5404401c2f 234 } else if(SUCCESS != yieldRc) {
peyo 0:cd5404401c2f 235 break;
peyo 0:cd5404401c2f 236 }
peyo 0:cd5404401c2f 237 } while(!has_timer_expired(&timer));
peyo 0:cd5404401c2f 238
peyo 0:cd5404401c2f 239 FUNC_EXIT_RC(yieldRc);
peyo 0:cd5404401c2f 240 }
peyo 0:cd5404401c2f 241
peyo 0:cd5404401c2f 242 /**
peyo 0:cd5404401c2f 243 * @brief Yield to the MQTT client
peyo 0:cd5404401c2f 244 *
peyo 0:cd5404401c2f 245 * Called to yield the current thread to the underlying MQTT client. This time is used by
peyo 0:cd5404401c2f 246 * the MQTT client to manage PING requests to monitor the health of the TCP connection as
peyo 0:cd5404401c2f 247 * well as periodically check the socket receive buffer for subscribe messages. Yield()
peyo 0:cd5404401c2f 248 * must be called at a rate faster than the keepalive interval. It must also be called
peyo 0:cd5404401c2f 249 * at a rate faster than the incoming message rate as this is the only way the client receives
peyo 0:cd5404401c2f 250 * processing time to manage incoming messages.
peyo 0:cd5404401c2f 251 * This is the outer function which does the validations and calls the internal yield above
peyo 0:cd5404401c2f 252 * to perform the actual operation. It is also responsible for client state changes
peyo 0:cd5404401c2f 253 *
peyo 0:cd5404401c2f 254 * @param pClient Reference to the IoT Client
peyo 0:cd5404401c2f 255 * @param timeout_ms Maximum number of milliseconds to pass thread execution to the client.
peyo 0:cd5404401c2f 256 *
peyo 0:cd5404401c2f 257 * @return An IoT Error Type defining successful/failed client processing.
peyo 0:cd5404401c2f 258 * If this call results in an error it is likely the MQTT connection has dropped.
peyo 0:cd5404401c2f 259 * iot_is_mqtt_connected can be called to confirm.
peyo 0:cd5404401c2f 260 */
peyo 0:cd5404401c2f 261 IoT_Error_t aws_iot_mqtt_yield(AWS_IoT_Client *pClient, uint32_t timeout_ms) {
peyo 0:cd5404401c2f 262 IoT_Error_t rc, yieldRc;
peyo 0:cd5404401c2f 263 ClientState clientState;
peyo 0:cd5404401c2f 264
peyo 0:cd5404401c2f 265 if(NULL == pClient || 0 == timeout_ms) {
peyo 0:cd5404401c2f 266 FUNC_EXIT_RC(NULL_VALUE_ERROR);
peyo 0:cd5404401c2f 267 }
peyo 0:cd5404401c2f 268
peyo 0:cd5404401c2f 269 clientState = aws_iot_mqtt_get_client_state(pClient);
peyo 0:cd5404401c2f 270 /* Check if network was manually disconnected */
peyo 0:cd5404401c2f 271 if(CLIENT_STATE_DISCONNECTED_MANUALLY == clientState) {
peyo 0:cd5404401c2f 272 FUNC_EXIT_RC(NETWORK_MANUALLY_DISCONNECTED);
peyo 0:cd5404401c2f 273 }
peyo 0:cd5404401c2f 274
peyo 0:cd5404401c2f 275 /* If we are in the pending reconnect state, skip other checks.
peyo 0:cd5404401c2f 276 * Pending reconnect state is only set when auto-reconnect is enabled */
peyo 0:cd5404401c2f 277 if(CLIENT_STATE_PENDING_RECONNECT != clientState) {
peyo 0:cd5404401c2f 278 /* Check if network is disconnected and auto-reconnect is not enabled */
peyo 0:cd5404401c2f 279 if(!aws_iot_mqtt_is_client_connected(pClient)) {
peyo 0:cd5404401c2f 280 FUNC_EXIT_RC(NETWORK_DISCONNECTED_ERROR);
peyo 0:cd5404401c2f 281 }
peyo 0:cd5404401c2f 282
peyo 0:cd5404401c2f 283 /* Check if client is idle, if not another operation is in progress and we should return */
peyo 0:cd5404401c2f 284 if(CLIENT_STATE_CONNECTED_IDLE != clientState) {
peyo 0:cd5404401c2f 285 FUNC_EXIT_RC(MQTT_CLIENT_NOT_IDLE_ERROR);
peyo 0:cd5404401c2f 286 }
peyo 0:cd5404401c2f 287
peyo 0:cd5404401c2f 288 rc = aws_iot_mqtt_set_client_state(pClient, CLIENT_STATE_CONNECTED_IDLE,
peyo 0:cd5404401c2f 289 CLIENT_STATE_CONNECTED_YIELD_IN_PROGRESS);
peyo 0:cd5404401c2f 290 if(SUCCESS != rc) {
peyo 0:cd5404401c2f 291 FUNC_EXIT_RC(rc);
peyo 0:cd5404401c2f 292 }
peyo 0:cd5404401c2f 293 }
peyo 0:cd5404401c2f 294
peyo 0:cd5404401c2f 295 yieldRc = _aws_iot_mqtt_internal_yield(pClient, timeout_ms);
peyo 0:cd5404401c2f 296
peyo 0:cd5404401c2f 297 if(NETWORK_DISCONNECTED_ERROR != yieldRc && NETWORK_ATTEMPTING_RECONNECT != yieldRc) {
peyo 0:cd5404401c2f 298 rc = aws_iot_mqtt_set_client_state(pClient, CLIENT_STATE_CONNECTED_YIELD_IN_PROGRESS,
peyo 0:cd5404401c2f 299 CLIENT_STATE_CONNECTED_IDLE);
peyo 0:cd5404401c2f 300 if(SUCCESS == yieldRc && SUCCESS != rc) {
peyo 0:cd5404401c2f 301 yieldRc = rc;
peyo 0:cd5404401c2f 302 }
peyo 0:cd5404401c2f 303 }
peyo 0:cd5404401c2f 304
peyo 0:cd5404401c2f 305 FUNC_EXIT_RC(yieldRc);
peyo 0:cd5404401c2f 306 }
peyo 0:cd5404401c2f 307
peyo 0:cd5404401c2f 308 #ifdef __cplusplus
peyo 0:cd5404401c2f 309 }
peyo 0:cd5404401c2f 310 #endif
peyo 0:cd5404401c2f 311