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116 lines
2.4 KiB
C
116 lines
2.4 KiB
C
#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <mosquitto.h>
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#include <sys/select.h>
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static int run = -1;
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static void do_loop(struct mosquitto *mosq)
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{
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int sock;
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struct timeval tv;
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fd_set readfds, writefds;
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int fdcount;
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int rc;
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sock = mosquitto_socket(mosq);
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FD_ZERO(&readfds);
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FD_ZERO(&writefds);
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FD_SET(sock, &readfds);
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while(run == -1){
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tv.tv_sec = 0;
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tv.tv_usec = 100000;
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FD_SET(sock, &readfds);
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if(mosquitto_want_write(mosq)){
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FD_SET(sock, &writefds);
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}else{
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FD_CLR(sock, &writefds);
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}
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fdcount = select(sock+1, &readfds, &writefds, NULL, &tv);
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if(FD_ISSET(sock, &readfds)){
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rc = mosquitto_loop_read(mosq, 1);
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}
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if(FD_ISSET(sock, &writefds)){
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rc = mosquitto_loop_write(mosq, 1);
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}
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mosquitto_loop_misc(mosq);
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}
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}
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static void on_connect_v5(struct mosquitto *mosq, void *obj, int rc, int flags, const mosquitto_property *properties)
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{
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(void)mosq;
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(void)obj;
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if(rc){
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exit(1);
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}else{
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int rc = mosquitto_subscribe_v5(mosq, NULL, "loop/test", 0, 0, NULL);
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}
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}
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static void on_disconnect_v5(struct mosquitto *mosq, void *obj, int rc, const mosquitto_property *properties)
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{
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(void)mosq;
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(void)obj;
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(void)properties;
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run = rc;
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}
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static void on_subscribe_v5(struct mosquitto *mosq, void *obj, int mid, int qos_count, const int *granted_qos, const mosquitto_property *props)
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{
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mosquitto_publish_v5(mosq, NULL, "loop/test", strlen("message"), "message", 0, false, NULL);
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}
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static void on_message_v5(struct mosquitto *mosq, void *obj, const struct mosquitto_message *msg, const mosquitto_property *properties)
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{
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(void)mosq;
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(void)obj;
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mosquitto_disconnect(mosq);
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}
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int main(int argc, char *argv[])
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{
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int rc;
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struct mosquitto *mosq;
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int port;
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int sock;
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if(argc < 2){
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return 1;
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}
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port = atoi(argv[1]);
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mosquitto_lib_init();
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mosq = mosquitto_new("loop-test", true, NULL);
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if(mosq == NULL){
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return 1;
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}
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mosquitto_int_option(mosq, MOSQ_OPT_PROTOCOL_VERSION, MQTT_PROTOCOL_V5);
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mosquitto_connect_v5_callback_set(mosq, on_connect_v5);
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mosquitto_disconnect_v5_callback_set(mosq, on_disconnect_v5);
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mosquitto_subscribe_v5_callback_set(mosq, on_subscribe_v5);
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mosquitto_message_v5_callback_set(mosq, on_message_v5);
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rc = mosquitto_connect_bind_v5(mosq, "localhost", port, 60, NULL, NULL);
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if(rc != MOSQ_ERR_SUCCESS) return rc;
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do_loop(mosq);
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mosquitto_destroy(mosq);
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mosquitto_lib_cleanup();
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return 1;
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}
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