POST to website

[omri10]

hi , I am using the ESP 32 to send parameters VIA POST to website , I am using this code :

Code: [Select all] [Expand/Collapse]

1.         timeA=millis();
2.         USE_SERIAL.println(timeA - timeB);
3.         strTotURL=strBaseUrl+strPage;
4.         strTotURL.replace(" ", "");
5.         //USE_SERIAL.println(strTotURL);
6.         http.begin(strTotURL, ca); //HTTPS
7.         http.addHeader("Content-Type", "application/x-www-form-urlencoded", false, true);
8.         httpCode = http.POST(strParams);      
9.         if(httpCode > 0)         // httpCode will be negative on error
10.         {            
11.             if(httpCode == HTTP_CODE_OK) // file found at server
12.             {
13.                 String payload = ">ADJ "+http.getString();
14.                 USE_SERIAL.println(payload);//+payload
15.                 timeA=millis();
16.                 /*USE_SERIAL.print("time befor : " + timeB/1000);
17.                 USE_SERIAL.print(" time after : " + timeA/1000);
18.                 USE_SERIAL.println(" elapsed : " + ((timeA-timeB)/1000));*/
19.                 USE_SERIAL.println(timeA - timeB);
20.             }
21.             else
22.             {
23.                 String payload = http.getString();
24.                 USE_SERIAL.println(String(">fail")+payload);              
25.             }
26.         }
27.         else
28.         {
29.            USE_SERIAL.print(String(">")+httpCode);
30.            USE_SERIAL.println(">Acc ER1");
31.         }
32.  
33.         http.end();

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the problem is that the process is taking 2 sec give or take , is there any way that I can make it faster ?

[PeterR]

Get a faster uplink and/or server
One problem is that HTTP negotiates a connection on each POST/GET etc.
So there is a lot of 'hello are you there', 'o yes I offer this', 'go on then here's my command' going on in each POST/GET.
Each interaction has potentionally a large latency.

MQTT and/or websockets would reduce latency significantly as these connection are established just the once rather on each transaction.
Grouping data will also improve performance. If you have 5 items to send then combine into one post.
I know - stamp coupling but the uplink won't bend to software 'rules'.

Unfortunately production quality software has to deal with potentially long response times.
The remote will not recieve data regularly and you will not always immediately recieve a 'i got it' response.

So you need to create a task which manages the uplink and allows your main task to get on with whatever.