Is my web service the problem?

[bko]

Here is the function that I use with good results:

void sendGetRequest(const char * server, const char * url)
{
    if (myTCP.connect(server, 80)) {
        //Serial1.print("Connected to Server");
        myTCP.print("GET ");
        myTCP.print(url);
        myTCP.println(" HTTP/1.0");
        myTCP.println("Connection: close");
        myTCP.print("Host: ");
        myTCP.println(server);
        myTCP.println("Accept: text/html, text/plain");
        myTCP.println();
        myTCP.flush();
    } 
}

I think the key part is the Host: part.