I'm trying to test sending HTTP requests from my Arduino. I decided to use Free RESTful web service - http://services.groupkt.com. But something goes wrong and I don't understand what.
GET request:
GET /country/get/all HTTP/1.1
Host: 45.79.172.152
Connection: keep-alive
Serial Monitor:
AT+CIPMUX=0
OK
AT+CIPSTART="TCP","45.79.172.152",80
CONNECT
OK
AT+CIPSEND=74
OK
>
busy s...
Recv 74 bytes
SEND OK
+IPD,493:HTTP/1.1 408 Request Timeout
Date: Thu, 07 Jun 2018 16:10:59 GMT
Server: Apache/2.4.25 (Debian)
Content-Length: 307
Connection: close
Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>408 Request Timeout</title>
</head><body>
<h1>Request Timeout</h1>
<p>Server timeout waiting for the HTTP request from the client.</p>
<hr>
<address>Apache/2.4.25 (Debian) Server at services.groupkt.com Port 80</address>
</body></html>
CLOSED
What I'm doing wrong?
HTTP is not like Telnet. You can't enter a HTTP request line by line in Serial Monitor. HTTP requests are meant to be sent by a program and the timeout to receive the complete request on servers is one or two seconds. Write a sketch the sends the request.