Need Help for Sending Data to Api using http Put, ESP8266 interfaced with SIM900

Projects Networking, Protocols, and Devices
1

Dear experts, I have a problem in sending data to Api interface using PUT. in my project im using both wifi and GSM for sending Data (Either GSM / WIFI selectable). while connecting thro WIFI PUT method working fine but in GSM mode i cant able to send data using CIPSEND. i tried with Postman its working fine. here is the postman data

`
PUT /eapi/Update HTTP/1.1
Host: .149.56.240.98:8080
Cache-Control: no-cache
Postman-Token: a742a5fd-3df3-8664-a027-1a15ca80d0b9

"Lamp:1,status:off"
`

My code is

url="PUT /eapi/Update HTTP/1.1";
      
 url+=" HTTP/1.0\r\n\r\n";
 String svr="AT+CIPSTART=\"TCP\"+",\"149.56.240.98\",8080";
        delay(1000);
        connectGSM(svr,"CONNECT");
        delay(1000);
        int len = url.length();
        String str="";
        str="AT+CIPSEND="+len;
        Serial.println(str);
	delay(1000);
        Serial.print(url);
        delay(1000);
        Serial.write(0x1A);

I received Bad Request 400. i don't know what is the format for sending data using PUT through SIM900. please help

2

This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.