Post request content length is limited to 2048btye

[developergunny]

I am working on reading the text in the txt file on the sd card and sending it to the server. If contents do not exceed 2048 bytes, it works normally, but if it exceeds 1btye, the server does not request normal parameters.

The content format is as follows.

contens = "documentJson={"list": [{"s_id" : "1111","day" : "2020-08-31","logtime" : "2020-08-31 23:50:26","hdc1080_Temp" : "125.00","hdc1080_RH" : "100.00","pm2008_PM10GRIMM" : "0.00","pm2008_PM25GRIMM" : "0.00","pm2008_PM100GRIMM" : "0.00","pm2008_PM10TSI" : "0.00","pm2008_PM25TSI" : "0.00","pm2008_PM100TSI" : "0.00","pm2008_Numof03" : "0.00","pm2008_Numof05" : "0.00","pm2008_Numof1" : "0.00","pm2008_Numof25" : "0.00","pm2008_Numof50" : "0.00","pm2008_Numof100" : "0.00","ccs811_eco2" : "0.00","ccs811_etvoc" : "0.00","seeed_NH3" : "-3.00","seeed_CO" : "-3.00","seeed_NO2" : "-3.00","seeed_C3H8" : "-3.00","seeed_C4H10" : "-3.00","seeed_CH4" : "-3.00","seeed_H2" : "-3.00","seeed_C2H5OH" : "-3.00","MQ2_Voltage" : "0.18","MQ2_R0" : "9.66","MQ2_H2" : "0.77","MQ2_LPG" : "0.37","MQ2_CO" : "1.26","MQ2_Alcohol" : "0.52","MQ2_Propane" : "0.50","MQ131_Voltage" : "0.00","MQ131_R0" : "385.40","MQ131_NOx" : "0.00","MQ131_CL2" : "0.20","MQ131_O3" : "0.14","MHZ19_Co2" : "463.00","MHZ19_Temp" : "27.00","MHZ19_Accuracy" : "0.00","ZE08_CH2O" : "45.00","so2_SN" : "2147483648.00","so2_So2" : "512.00","so2_TEMP" : "27.00","so2_RH" : "54.00","so2_RawSensor" : "32991.00","so2_TempDigital" : "27700.00","so2_RHDigital" : "31558.00"},{"list": {"s_id" : "1111","day" : "2020-08-31","logtime" : "2020-08-31 23:50:26","hdc1080_Temp" : "125.00","hdc1080_RH" : "100.00","pm2008_PM10GRIMM" : "0.00","pm2008_PM25GRIMM" : "0.00","pm2008_PM100GRIMM" : "0.00","pm2008_PM10TSI" : "0.00","pm2008_PM25TSI" : "0.00","pm2008_PM100TSI" : "0.00","pm2008_Numof03" : "0.00","pm2008_Numof05" : "0.00","pm2008_Numof1" : "0.00","pm2008_Numof25" : "0.00","pm2008_Numof50" : "0.00","pm2008_Numof100" : "0.00","ccs811_eco2" : "0.00","ccs811_etvoc" : "0.00","seeed_NH3" : "-3.00","seeed_CO" : "-3.00","seeed_NO2" : "-3.00","seeed_C3H8" : "-3.00","seeed_C4H10" : "-3.00","seeed_CH4" : "-3.00","seeed_H2" : "-3.00","seeed_C2H5OH" : "-3.00","MQ2_Voltage" : "0.18","MQ2_R0" : "9.66","MQ2_H2" : "0.77","MQ2_LPG" : "0.37","MQ2_CO" : "1.26","MQ2_Alcohol" : "0.52","MQ2_Propane" : "0.50","MQ131_Voltage" : "0.00","MQ131_R0" : "385.40","MQ131_NOx" : "0.00","MQ131_CL2" : "0.20","MQ131_O3" : "0.14","MHZ19_Co2" : "463.00","MHZ19_Temp" : "27.00","MHZ19_Accuracy" : "0.00","ZE08_CH2O" : "45.00","so2_SN" : "2147483648.00","so2_So2" : "512.00","so2_TEMP" : "27.00","so2_RH" : "54.00","so2_RawSensor" : "32991.00","so2_TempDigital" : "27700.00","so2_RHDigital" : "31558.00"}]}";

    if (client.connect((const char*)SERVER.c_str(), 80)) {
        delay(500);
        
        _serial_out->print("Connected to server -> ");
        _serial_out->println(SERVER);

        _serial_out->println(String(contents.length()));
        
        // Make a HTTP request
        client.println("POST /* url */ HTTP/1.1");
        client.println("Host:  /* server */");
        client.println("Content-Length: " + String(contents.length()));
        client.println("Content-Type: application/x-www-form-urlencoded");
        //client.println("Connection: close");
        client.println();

        client.println(contents);

        client.flush();
        client.stop();

        _serial_out->println();
        
        delay(500);

    }else{
        _serial_out->println("Error : Fail connected to server");

        _serial_out->println();
        
        delay(500);
    }

[developergunny]

[JAndrassy]

the AT firmware has a limit of 2048 bytes per AT+CIPSEND. send it with multiple print commands.
or update the AT firmware and use my WiFiEspAT library. https://github.com/jandrassy/WiFiEspAT
it has a special command for efficient sending of a file.

[developergunny]

the AT firmware has a limit of 2048 bytes per AT+CIPSEND. send it with multiple print commands.
or update the AT firmware and use my WiFiEspAT library. https://github.com/jandrassy/WiFiEspAT
it has a special command for efficient sending of a file.

Can I just use the library? Are there any special codes that can be used to send more length parameters?

If there is no other way of limiting the length, just split the text as per your advice. Thank you for answer😊👍