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Add error checks for write/read

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It fixes loop lock, when read receives for example ECONNRESET
This commit is contained in:
jarek
2017-05-18 13:24:20 +02:00
parent 76d49e085d
commit 14bfacfac0
1 changed files with 21 additions and 2 deletions
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23
mqtt.c
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@@ -261,6 +261,10 @@ static bool mqtt_connect(mqtt_client *client)
write_len = client->settings->write_cb(client,
client->mqtt_state.outbound_message->data,
client->mqtt_state.outbound_message->length, 0);
if(write_len < 0) {
mqtt_error("Writing failed: %d", errno);
return false;
}
mqtt_info("Reading MQTT CONNECT response message");
@@ -295,7 +299,8 @@ static bool mqtt_connect(mqtt_client *client)
void mqtt_sending_task(void *pvParameters)
{
mqtt_client *client = (mqtt_client *)pvParameters;
uint32_t msg_len, send_len;
uint32_t msg_len;
int send_len;
mqtt_info("mqtt_sending_task");
while (1) {
@@ -310,7 +315,11 @@ void mqtt_sending_task(void *pvParameters)
rb_read(&client->send_rb, client->mqtt_state.out_buffer, send_len);
client->mqtt_state.pending_msg_type = mqtt_get_type(client->mqtt_state.out_buffer);
client->mqtt_state.pending_msg_id = mqtt_get_id(client->mqtt_state.out_buffer, send_len);
client->settings->write_cb(client, client->mqtt_state.out_buffer, send_len, 0);
send_len = client->settings->write_cb(client, client->mqtt_state.out_buffer, send_len, 0);
if(send_len < 0) {
mqtt_info("Write error: %d", errno);
break; // TODO is this right handling?
}
//TODO: Check sending type, to callback publish message
msg_len -= send_len;
@@ -368,6 +377,10 @@ void deliver_publish(mqtt_client *client, uint8_t *message, int length)
break;
len_read = client->settings->read_cb(client, client->mqtt_state.in_buffer, CONFIG_MQTT_BUFFER_SIZE_BYTE, 0);
if(len_read < 0) {
mqtt_info("Read error: %d", errno);
break;
}
client->mqtt_state.message_length_read += len_read;
} while (1);
@@ -386,6 +399,12 @@ void mqtt_start_receive_schedule(mqtt_client *client)
mqtt_info("Read len %d", read_len);
if (read_len == 0)
break;
if (read_len < 0) {
// ECONNRESET for example
mqtt_info("Read error %d", errno);
break;
}
msg_type = mqtt_get_type(client->mqtt_state.in_buffer);
msg_qos = mqtt_get_qos(client->mqtt_state.in_buffer);