Disconnect callback not being triggered
Posted: Thu May 03, 2018 2:04 amHello all,
I am trying a simple webpage pull from my local server based off the espressif sample code and the ESP8266-Huzzah. I am getting it to connect, send request and receive data but the disconnect callback never gets fired.
I have graduated from this HTTP pull to a websocket connection which works fine. In that case I do need the disconnect callback to fire so that I can reconnect the websocket to initiate low power state at will. I tried espconn_init() hoping that might be the issue but that throws and error for missing espconn_init_lwip2() which is defined in lwip2 lib. Can someone suggest why the disconnect doesnt fire at the end of the pull in the below code? Thanks!
The Huzzah I am using is this https://www.adafruit.com/product/2821 that I purchased, I think, a year back
Plus I am using Arduino to program it.
I am trying a simple webpage pull from my local server based off the espressif sample code and the ESP8266-Huzzah. I am getting it to connect, send request and receive data but the disconnect callback never gets fired.
I have graduated from this HTTP pull to a websocket connection which works fine. In that case I do need the disconnect callback to fire so that I can reconnect the websocket to initiate low power state at will. I tried espconn_init() hoping that might be the issue but that throws and error for missing espconn_init_lwip2() which is defined in lwip2 lib. Can someone suggest why the disconnect doesnt fire at the end of the pull in the below code? Thanks!
The Huzzah I am using is this https://www.adafruit.com/product/2821 that I purchased, I think, a year back
Plus I am using Arduino to program it.Code: Select all
const char* TLSHEAD = "GET / HTTP/1.1\r\nHost: %d.%d.%d.%d\r\nConnection: keep-alive\r\n\r\n";
LOCAL os_timer_t test_timer;
LOCAL struct espconn user_tcp_conn, clientconn;
LOCAL struct _esp_tcp user_tcp;
ip_addr_t tcp_server_ip;
/******************************************************************************
* FunctionName : user_tcp_recv_cb
* Description : receive callback.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR user_tcp_recv_cb(void *arg, char *pusrdata, unsigned short length)
{
//received some data from tcp connection
Serial.println ("Received data");
os_printf("Received data string: %s \r\n", pusrdata);
}
/******************************************************************************
* FunctionName : user_tcp_sent_cb
* Description : data sent callback.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR user_tcp_sent_cb(void *arg)
{
//data sent successfully
Serial.println("Sent data");
os_printf("Sent callback: data sent successfully.\r\n");
}
/******************************************************************************
* FunctionName : user_tcp_discon_cb
* Description : disconnect callback.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR user_tcp_discon_cb(void *arg)
{
//tcp disconnect successfully
Serial.println("Disconnected");
os_printf("Disconnected from server.\r\n");
}
/******************************************************************************
* FunctionName : user_esp_platform_sent
* Description : Processing the application data and sending it to the host
* Parameters : pespconn -- the espconn used to connetion with the host
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR user_send_data(struct espconn *pespconn)
{
char *pbuf = (char *)os_zalloc(packet_size);
Serial.println("Sending data");
os_sprintf(pbuf, TLSHEAD,
pespconn->proto.tcp->remote_ip[0], pespconn->proto.tcp->remote_ip[1],
pespconn->proto.tcp->remote_ip[2], pespconn->proto.tcp->remote_ip[3]);
espconn_send(pespconn, (uint8 *)pbuf, os_strlen(pbuf));
os_free(pbuf);
}
/******************************************************************************
* FunctionName : user_tcp_connect_cb
* Description : A new incoming tcp connection has been connected.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR user_tcp_connect_cb(void *arg)
{
struct espconn *pespconn = (espconn *)arg;
Serial.println("Connected");
os_printf("Connected to server...\r\n");
espconn_regist_recvcb(pespconn, user_tcp_recv_cb);
espconn_regist_sentcb(pespconn, user_tcp_sent_cb);
user_send_data(pespconn);
}
/******************************************************************************
* FunctionName : user_tcp_recon_cb
* Description : reconnect callback, error occured in TCP connection.
* Parameters : arg -- Additional argument to pass to the callback function
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR user_tcp_recon_cb(void *arg, sint8 err)
{
//error occured , tcp connection broke. user can try to reconnect here.
Serial.println("Reconnecting");
os_printf("Reconnect callback called, error code: %d !!! \r\n",err);
}
/******************************************************************************
* FunctionName : user_dns_found
* Description : dns found callback
* Parameters : name -- pointer to the name that was looked up.
* ipaddr -- pointer to an ip_addr_t containing the IP address of
* the hostname, or NULL if the name could not be found (or on any
* other error).
* callback_arg -- a user-specified callback argument passed to
* dns_gethostbyname
* Returns : none
*******************************************************************************/
LOCAL void ICACHE_FLASH_ATTR user_dns_found(void *arg)
{
Serial.println("Starting connection");
struct espconn *pespconn = (struct espconn *)arg;
pespconn->proto.tcp->remote_ip[0] = 192;
pespconn->proto.tcp->remote_ip[1] = 168;
pespconn->proto.tcp->remote_ip[2] = 1;
pespconn->proto.tcp->remote_ip[3] = 164;
pespconn->proto.tcp->remote_port = 8000; // remote port of tcp server
pespconn->proto.tcp->local_port = espconn_port(); //local port of ESP8266
espconn_regist_connectcb(pespconn, user_tcp_connect_cb); // register connect callback
espconn_regist_reconcb(pespconn, user_tcp_recon_cb); // register reconnect callback as error handler
espconn_regist_disconcb(pespconn, user_tcp_discon_cb); // register disconnect callback here,
espconn_connect(pespconn); // tcp connect
}
//Setup
void setup() {
//bounce = 0;
pinMode(0, OUTPUT);
digitalWrite(0,HIGH);
Serial.begin(9600);
// Connect via DHCP
Serial.println("connect to network");
//client.dhcp();
randomSeed(ESP.getCycleCount());
// Connect to WiFi
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
currentState=0;
// Print the IP address
Serial.println(WiFi.localIP());
//response = "";
//int statusCode = client.get("/", &response);
Serial.print("Status code from server: ");
//Serial.println(statusCode);
//Serial.print("Response body from server: ");
yield();
//Serial.println(response);
yield();
_esp_tcp mytcp;
mytcp.local_ip[0]=192;
mytcp.local_ip[1]=168;
mytcp.local_ip[2]=1;
mytcp.local_ip[3]=165;
yield();
clientconn.type=ESPCONN_TCP;
clientconn.state = ESPCONN_NONE;
clientconn.proto.tcp=&mytcp;
yield();
user_dns_found(&clientconn);
while(1)
{
yield();
delay(1000);
}
}
void loop()
{
}