1 | #include "PubSubClient.h"
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2 | #include "ShimClient.h"
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3 | #include "Buffer.h"
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4 | #include "BDDTest.h"
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5 | #include "trace.h"
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6 | #include <unistd.h>
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7 |
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8 | byte server[] = { 172, 16, 0, 2 };
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9 |
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10 | void callback(char* topic, byte* payload, unsigned int length) {
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11 | // handle message arrived
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12 | }
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13 |
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14 |
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15 | int test_keepalive_pings_idle() {
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16 | IT("keeps an idle connection alive (takes 1 minute)");
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17 |
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18 | ShimClient shimClient;
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19 | shimClient.setAllowConnect(true);
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20 |
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21 | byte connack[] = { 0x20, 0x02, 0x00, 0x00 };
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22 | shimClient.respond(connack,4);
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23 |
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24 | PubSubClient client(server, 1883, callback, shimClient);
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25 | int rc = client.connect((char*)"client_test1");
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26 | IS_TRUE(rc);
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27 |
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28 | byte pingreq[] = { 0xC0,0x0 };
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29 | shimClient.expect(pingreq,2);
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30 | byte pingresp[] = { 0xD0,0x0 };
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31 | shimClient.respond(pingresp,2);
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32 |
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33 | for (int i = 0; i < 50; i++) {
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34 | sleep(1);
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35 | if ( i == 15 || i == 31 || i == 47) {
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36 | shimClient.expect(pingreq,2);
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37 | shimClient.respond(pingresp,2);
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38 | }
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39 | rc = client.loop();
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40 | IS_TRUE(rc);
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41 | }
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42 |
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43 | IS_FALSE(shimClient.error());
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44 |
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45 | END_IT
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46 | }
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47 |
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48 | int test_keepalive_pings_with_outbound_qos0() {
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49 | IT("keeps a connection alive that only sends qos0 (takes 1 minute)");
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50 |
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51 | ShimClient shimClient;
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52 | shimClient.setAllowConnect(true);
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53 |
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54 | byte connack[] = { 0x20, 0x02, 0x00, 0x00 };
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55 | shimClient.respond(connack,4);
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56 |
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57 | PubSubClient client(server, 1883, callback, shimClient);
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58 | int rc = client.connect((char*)"client_test1");
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59 | IS_TRUE(rc);
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60 |
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61 | byte publish[] = {0x30,0xe,0x0,0x5,0x74,0x6f,0x70,0x69,0x63,0x70,0x61,0x79,0x6c,0x6f,0x61,0x64};
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62 |
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63 | for (int i = 0; i < 50; i++) {
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64 | TRACE(i<<":");
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65 | shimClient.expect(publish,16);
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66 | rc = client.publish((char*)"topic",(char*)"payload");
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67 | IS_TRUE(rc);
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68 | IS_FALSE(shimClient.error());
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69 | sleep(1);
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70 | if ( i == 15 || i == 31 || i == 47) {
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71 | byte pingreq[] = { 0xC0,0x0 };
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72 | shimClient.expect(pingreq,2);
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73 | byte pingresp[] = { 0xD0,0x0 };
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74 | shimClient.respond(pingresp,2);
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75 | }
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76 | rc = client.loop();
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77 | IS_TRUE(rc);
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78 | IS_FALSE(shimClient.error());
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79 | }
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80 |
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81 | END_IT
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82 | }
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83 |
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84 | int test_keepalive_pings_with_inbound_qos0() {
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85 | IT("keeps a connection alive that only receives qos0 (takes 1 minute)");
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86 |
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87 | ShimClient shimClient;
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88 | shimClient.setAllowConnect(true);
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89 |
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90 | byte connack[] = { 0x20, 0x02, 0x00, 0x00 };
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91 | shimClient.respond(connack,4);
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92 |
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93 | PubSubClient client(server, 1883, callback, shimClient);
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94 | int rc = client.connect((char*)"client_test1");
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95 | IS_TRUE(rc);
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96 |
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97 | byte publish[] = {0x30,0xe,0x0,0x5,0x74,0x6f,0x70,0x69,0x63,0x70,0x61,0x79,0x6c,0x6f,0x61,0x64};
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98 |
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99 | for (int i = 0; i < 50; i++) {
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100 | TRACE(i<<":");
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101 | sleep(1);
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102 | if ( i == 15 || i == 31 || i == 47) {
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103 | byte pingreq[] = { 0xC0,0x0 };
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104 | shimClient.expect(pingreq,2);
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105 | byte pingresp[] = { 0xD0,0x0 };
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106 | shimClient.respond(pingresp,2);
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107 | }
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108 | shimClient.respond(publish,16);
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109 | rc = client.loop();
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110 | IS_TRUE(rc);
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111 | IS_FALSE(shimClient.error());
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112 | }
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113 |
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114 | END_IT
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115 | }
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116 |
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117 | int test_keepalive_no_pings_inbound_qos1() {
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118 | IT("does not send pings for connections with inbound qos1 (takes 1 minute)");
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119 |
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120 | ShimClient shimClient;
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121 | shimClient.setAllowConnect(true);
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122 |
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123 | byte connack[] = { 0x20, 0x02, 0x00, 0x00 };
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124 | shimClient.respond(connack,4);
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125 |
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126 | PubSubClient client(server, 1883, callback, shimClient);
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127 | int rc = client.connect((char*)"client_test1");
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128 | IS_TRUE(rc);
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129 |
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130 | byte publish[] = {0x32,0x10,0x0,0x5,0x74,0x6f,0x70,0x69,0x63,0x12,0x34,0x70,0x61,0x79,0x6c,0x6f,0x61,0x64};
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131 | byte puback[] = {0x40,0x2,0x12,0x34};
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132 |
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133 | for (int i = 0; i < 50; i++) {
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134 | shimClient.respond(publish,18);
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135 | shimClient.expect(puback,4);
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136 | sleep(1);
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137 | rc = client.loop();
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138 | IS_TRUE(rc);
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139 | IS_FALSE(shimClient.error());
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140 | }
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141 |
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142 | END_IT
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143 | }
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144 |
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145 | int test_keepalive_disconnects_hung() {
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146 | IT("disconnects a hung connection (takes 30 seconds)");
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147 |
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148 | ShimClient shimClient;
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149 | shimClient.setAllowConnect(true);
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150 |
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151 | byte connack[] = { 0x20, 0x02, 0x00, 0x00 };
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152 | shimClient.respond(connack,4);
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153 |
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154 | PubSubClient client(server, 1883, callback, shimClient);
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155 | int rc = client.connect((char*)"client_test1");
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156 | IS_TRUE(rc);
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157 |
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158 | byte pingreq[] = { 0xC0,0x0 };
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159 | shimClient.expect(pingreq,2);
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160 |
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161 | for (int i = 0; i < 32; i++) {
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162 | sleep(1);
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163 | rc = client.loop();
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164 | }
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165 | IS_FALSE(rc);
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166 |
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167 | int state = client.state();
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168 | IS_TRUE(state == MQTT_CONNECTION_TIMEOUT);
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169 |
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170 | IS_FALSE(shimClient.error());
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171 |
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172 | END_IT
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173 | }
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174 |
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175 | int main()
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176 | {
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177 | SUITE("Keep-alive");
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178 | test_keepalive_pings_idle();
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179 | test_keepalive_pings_with_outbound_qos0();
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180 | test_keepalive_pings_with_inbound_qos0();
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181 | test_keepalive_no_pings_inbound_qos1();
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182 | test_keepalive_disconnects_hung();
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183 |
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184 | FINISH
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185 | }
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