ESP8266 Community Forum

- Wed Jun 01, 2016 10:44 am #48402

Code: Select allconst char ContentOne[] PROGMEM = "......";
const char ContentTwo[] PROGMEM = "......";
httpServer.setContentLength(strlen_P(ContentOne) + strlen_P(ContentTwo));
httpServer.send(200, "text/html", "" );
httpServer.sendContent_P( ContentOne );
httpServer.sendContent_P( ContentTwo );

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- Wed Jun 01, 2016 12:41 pm #48406

Code: Select allconst char ContentOne[] PROGMEM = "......";
const char ContentTwo[] PROGMEM = "......";
httpServer.setContentLength(strlen_P(ContentOne) + strlen_P(ContentTwo));
httpServer.send(200, "text/html", "" );
httpServer.sendContent_P( ContentOne );
httpServer.sendContent_P( ContentTwo );

Why so late man? I did not see the 'setContentLength()' method. So I had to add another method headers :

Code: Select allvoid ESP8266WebServer::sendDefaultHeaders(int code, const char* content_type, size_t contentLength) {
    String header;
    _prepareHeader(header, code, content_type, contentLength);
    sendContent(header);
}

Thanks for the knowledge though.
Limitation of your suggested method is that I have to setContentLength for everytime i send some multipart data, plus extra function calls.

User of:
Arduino Uno
Raspberry pi 2
ESP8266-01
ESP8266-12E

- Wed Jun 01, 2016 1:01 pm #48408 All those methods are there to get more flexibility.
Like in the example given by @me-no-dev, between the two PROGMEM contents, we can add some dynamic content coming from sensors for example.

- Wed Jun 01, 2016 1:12 pm #48409 the stock web server does not transmit/support chunked content, so if you want to send some page that is comprised from different chunks, you need to know the final content length before you send the response, else the browser will wait for more data and keep the connection open (or not expect data at all if ContentLength is zero and close after the headers).

Async HTTP and WebSocket Server for ESP8266
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ESP8266 Exception Stack Trace Decoder