3party/mongoose
0
0
Fork 0
mirror of https://github.com/cesanta/mongoose.git synced 2024-12-28 07:28:13 +08:00
Code Issues Projects Releases Wiki Activity

Add MQTT version check

Browse Source
This commit is contained in:
Sergey Lyubka 2021-09-17 14:02:29 +01:00
parent c7bd63ef53
commit 9b6b1a68f4
2 changed files with 14 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
examples/mqtt-server/Makefile
View File

@ -1,7 +1,7 @@
PROG ?= example
all: $(PROG)
$(DEBUGGER) ./$(PROG) $(ARGS)
$(RUN) ./$(PROG) $(ARGS)
$(PROG): main.c
$(CC) ../../mongoose.c -I../.. -W -Wall -DMG_ENABLE_LINES=1 $(CFLAGS) -o $(PROG) main.c

18
examples/mqtt-server/main.c
View File

@ -27,15 +27,21 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
LOG(LL_DEBUG, ("cmd %d qos %d", mm->cmd, mm->qos));
switch (mm->cmd) {
case MQTT_CMD_CONNECT: {
// Client connects. Return success, do not check user/password
uint8_t response[] = {0, 0};
mg_mqtt_send_header(c, MQTT_CMD_CONNACK, 0, sizeof(response));
mg_send(c, response, sizeof(response));
// Client connects
if (mm->dgram.len < 9) {
mg_error(c, "Malformed MQTT frame");
} else if (mm->dgram.ptr[8] != 4) {
mg_error(c, "Unsupported MQTT version %d", mm->dgram.ptr[8]);
} else {
uint8_t response[] = {0, 0};
mg_mqtt_send_header(c, MQTT_CMD_CONNACK, 0, sizeof(response));
mg_send(c, response, sizeof(response));
}
break;
}
case MQTT_CMD_SUBSCRIBE: {
// Client subscribes
int pos = 4; // Initial topic offset, where ID ends
size_t pos = 4; // Initial topic offset, where ID ends
uint8_t qos;
struct mg_str topic;
while ((pos = mg_mqtt_next_sub(mm, &topic, &qos, pos)) > 0) {
@ -60,6 +66,8 @@ static void fn(struct mg_connection *c, int ev, void *ev_data, void *fn_data) {
break;
}
}
} else if (ev == MG_EV_ACCEPT) {
// c->is_hexdumping = 1;
} else if (ev == MG_EV_CLOSE) {
// Client disconnects. Remove from the subscription list
for (struct sub *next, *sub = s_subs; sub != NULL; sub = next) {