ESP8266 Community Forum

- Mon Jan 23, 2017 12:06 am #61399 Hello,

I am trying to send Http get to a camera ( Olympus AIR) . It work quite well from a computer : This is the wireshark trace :

So its http://192.168.0.10/get_commandlist.cgi
with the following header :
Host:192.168.0.10
User-Agent:OlympusCameraKit

So my code is :

Code: Select all#include <ESP8266WiFi.h>
#include <ESP8266WiFiMulti.h>
#include <ESP8266HTTPClient.h>

ESP8266WiFiMulti WiFiMulti;

void setup() {
    Serial.begin(115200);
    delay(10);
    Serial.print("Wait for WiFi... ");

    while(WiFiMulti.run() != WL_CONNECTED) {
        Serial.print(".");
        delay(500);
    }
    Serial.println("");
    Serial.println("WiFi connected");
    Serial.println("IP address: ");
    Serial.println(WiFi.localIP());
    delay(500);
}

void loop() {
  HTTPClient http;
  http.begin("http://192.168.0.10/get_commandlist.cgi");
    http.addHeader("Host","192.168.0.10",true,true);
  http.addHeader("User-Agent","OlympusCameraKit");
    http.addHeader("Connection","KeepAlive"); 
  int httpCode = http.GET();
  Serial.println(httpCode);
  String payload = http.getString();
Serial.println(payload);
http.end();
delay(5000);
 
}

But the answer is 404 for Http error 404 as oppose of a xml result as i get when i do the same request from my computer.

- Thu Jan 26, 2017 4:26 pm #61580 404 is simply "Not Found" so if you are getting the STATUS_CODE then perhaps your HTTP GET request from the ESP8266 is correct, but the path is wrong or the string you are using for the URL needs to be encoded properly? FAIK, The HTTP looks fine.