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POGoogle Goggles API/Or workaround
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  1. POGoogle Goggles API/Or workaround
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    copied!<p>i have read the thread <a href="https://stackoverflow.com/questions/2080731/google-goggles-api">Google Goggles API</a>. and From <a href="http://notanothercodeblog.blogspot.com/2011/02/google-goggles-api.html" rel="nofollow noreferrer">NotAnotherCodeBlog</a> have created a c# implementation using the sample code. Has anyone been able to get it working recently? i know the API isn't documented and as such may have changed so its possible the code worked and now doesn't OR that my code is faulty. I keep getting an exception thrown giving me a protocol error. (error 500 in the exception and protocol error in the exception status) Code below.</p> <pre><code> using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Net; public class Goggles { // The POST body required to validate the CSSID. private static byte[] CssidPostBody = new byte[] { 34, 0, 98, 60, 10, 19, 34, 2, 101, 110, 186, 211, 240, 59, 10, 8, 1, 16, 1, 40, 1, 48, 0, 56, 1, 18, 29, 10, 9, 105, 80, 104, 111, 110, 101, 32, 79, 83, 18, 3, 52, 46, 49, 26, 0, 34, 9, 105, 80, 104, 111, 110, 101, 51, 71, 83, 26, 2, 8, 2, 34, 2, 8, 1 }; // Bytes trailing the image byte array. Look at the next code snippet to see // where it is used in SendPhoto() method. private static byte[] TrailingBytes = new byte[] { 24, 75, 32, 1, 48, 0, 146, 236, 244, 59, 9, 24, 0, 56, 198, 151, 220, 223, 247, 37, 34, 0 }; // Generates a cssid. private static string Cssid { get { Random random = new Random((int)DateTime.Now.Ticks); return string.Format( "{0}{1}", random.Next().ToString("X8"), random.Next().ToString("X8")); } } static void Main(string[] args) { string cssid = Goggles.Cssid; Goggles.ValidateCSSID(cssid); // See next code snippet for SendPhoto() //Goggles.SendPhoto(cssid, yourImageByteArray); Console.ReadLine(); } // Validates the CSSID we just created, by POSTing it to Goggles. private static void ValidateCSSID(string cssid) { HttpWebRequest request = (HttpWebRequest)WebRequest.Create(string.Format("http://www.google.com/goggles/container_proto?cssid={0}", cssid)); Goggles.AddHeaders(request); request.Method = "POST"; using (Stream stream = request.GetRequestStream()) { stream.Write(Goggles.CssidPostBody, 0, Goggles.CssidPostBody.Length); stream.Flush(); } HttpWebResponse response = (HttpWebResponse)request.GetResponse(); } private static byte[] imageToByteArray(System.Drawing.Image imageIn) { MemoryStream ms = new MemoryStream(); imageIn.Save(ms, System.Drawing.Imaging.ImageFormat.Gif); return ms.ToArray(); } private static void AddHeaders(HttpWebRequest request) { request.ContentType = "application/x-protobuffer"; request.Headers["Pragma"] = "no-cache"; request.KeepAlive = true; } public static HttpWebResponse SendPhoto(string file) { System.Drawing.Image oimg = System.Drawing.Image.FromFile(file); return (SendPhoto(imageToByteArray(oimg))); } public static HttpWebResponse SendPhoto(byte[] image) { string cssid = null; HttpWebResponse response; SendPhoto(ref cssid, image, out response); return response; } public static void SendPhoto( ref string cssid, byte[] image, out HttpWebResponse pHttpWebResponse) { if (cssid == null || cssid == "") cssid = Goggles.Cssid; HttpWebRequest request = (HttpWebRequest)WebRequest.Create( string.Format( "http://www.google.com/goggles/container_proto?cssid={0}", cssid)); Goggles.AddHeaders(request); request.Method = "POST"; // x = image size int x = image.Length; byte[] xVarint = Goggles.ToVarint32(x).ToArray&lt;byte&gt;(); // a = x + 32 byte[] aVarint = Goggles.ToVarint32(x + 32).ToArray&lt;byte&gt;(); // b = x + 14 byte[] bVarint = Goggles.ToVarint32(x + 14).ToArray&lt;byte&gt;(); // c = x + 10 byte[] cVarint = Goggles.ToVarint32(x + 10).ToArray&lt;byte&gt;(); // 0A [a] 0A [b] 0A [c] 0A [x] [image bytes] using (Stream stream = request.GetRequestStream()) { // 0x0A stream.Write(new byte[] { 10 }, 0, 1); // a stream.Write(aVarint, 0, aVarint.Length); // 0x0A stream.Write(new byte[] { 10 }, 0, 1); // b stream.Write(bVarint, 0, bVarint.Length); // 0x0A stream.Write(new byte[] { 10 }, 0, 1); // c stream.Write(cVarint, 0, cVarint.Length); // 0x0A stream.Write(new byte[] { 10 }, 0, 1); // x stream.Write(xVarint, 0, xVarint.Length); // Write image stream.Write(image, 0, image.Length); // Write trailing bytes stream.Write( Goggles.TrailingBytes, 0, Goggles.TrailingBytes.Length); stream.Flush(); } try { pHttpWebResponse = null; pHttpWebResponse = (HttpWebResponse)request.GetResponse(); } catch (Exception ex) { pHttpWebResponse = null; } } // Encodes an int32 into varint32. public static IEnumerable&lt;byte&gt; ToVarint32(int value) { int index = 0; while ((0x7F &amp; value) != 0) { int i = (0x7F &amp; value); if ((0x7F &amp; (value &gt;&gt; 7)) != 0) { i += 128; } yield return ((byte)i); value = value &gt;&gt; 7; index++; } } } </code></pre> <p>Cheers Tim</p>
 

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