I'm making a snipping tool that can quickly upload to imgur. But when I'm uploading the image, it gives me a 401 error.
Picture_Viewer.cs
using System;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Web;
using System.Web.Extensions;
using System.Web.Script;
using System.Web.Script.Serialization;
using System.Net;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Windows.Forms;
namespace Snipping_Tool
{
public partial class Picture_Viewer : Form
{
public Picture_Viewer()
{
InitializeComponent();
}
int selectX;
int selectY;
int selectWidth;
int selectHeight;
public Pen selectPen;
bool start = false;
const string ClientId = "client_id";
const string ClientSecret = "client_secret"; //I have it registered but I don't want to show it. Sorry!
private void Picture_Viewer_MouseMove(object sender, MouseEventArgs e)
{
if (pictureBox1.Image == null)
return;
//validate if right-click was trigger
if (start)
{
//refresh picture box
pictureBox1.Refresh();
//set corner square to mouse coordinates
selectWidth = e.X - selectX;
selectHeight = e.Y - selectY;
//draw dotted rectangle
pictureBox1.CreateGraphics().DrawRectangle(selectPen,
selectX, selectY, selectWidth, selectHeight);
}
}
private void Picture_Viewer_MouseDown(object sender, MouseEventArgs e)
{
if (!start)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
//starts coordinates for rectangle
selectX = e.X;
selectY = e.Y;
selectPen = new Pen(Color.Red, 1);
selectPen.DashStyle = DashStyle.DashDotDot;
}
//refresh picture box
pictureBox1.Refresh();
//start control variable for draw rectangle
start = true;
}
else
{
//validate if there is image
if (pictureBox1.Image == null)
return;
//same functionality when mouse is over
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
pictureBox1.Refresh();
selectWidth = e.X - selectX;
selectHeight = e.Y - selectY;
pictureBox1.CreateGraphics().DrawRectangle(selectPen, selectX,
selectY, selectWidth, selectHeight);
}
start = false;
//function save image to clipboard
}
}
private void SaveToClipboard()
{
//validate if something selected
if (selectWidth > 0)
{
Rectangle rect = new Rectangle(selectX, selectY, selectWidth, selectHeight);
//create bitmap with original dimensions
Bitmap OriginalImage = new Bitmap(pictureBox1.Image, pictureBox1.Width, pictureBox1.Height);
//create bitmap with selected dimensions
Bitmap _img = new Bitmap(selectWidth, selectHeight);
//create graphic variable
Graphics g = Graphics.FromImage(_img);
//set graphic attributes
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(OriginalImage, 0, 0, rect, GraphicsUnit.Pixel);
//insert image stream into clipboard
Clipboard.SetImage(_img);
}
else
{
Rectangle rect = new Rectangle(0, 0, pictureBox1.Image.Width, pictureBox1.Image.Height);
Bitmap OriginalImage = new Bitmap(pictureBox1.Image, pictureBox1.Width, pictureBox1.Height);
//create bitmap with selected dimensions
Bitmap _img = new Bitmap(pictureBox1.Image.Width, pictureBox1.Image.Height);
//create graphic variable
Graphics g = Graphics.FromImage(_img);
//set graphic attributes
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(OriginalImage, 0, 0, rect, GraphicsUnit.Pixel);
Clipboard.SetImage(_img);
}
this.Close();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
Application.Exit();
}
private void Picture_Viewer_Load(object sender, EventArgs e)
{
}
private void copyToClipboardCTRLCToolStripMenuItem_Click(object sender, EventArgs e)
{
SaveToClipboard();
}
public Bitmap _img;
private void uploadToImgurToolStripMenuItem_Click(object sender, EventArgs e)
{
if (selectWidth > 0)
{
Rectangle rect = new Rectangle(selectX, selectY, selectWidth, selectHeight);
//create bitmap with original dimensions
Bitmap OriginalImage = new Bitmap(pictureBox1.Image, pictureBox1.Width, pictureBox1.Height);
//create bitmap with selected dimensions
Bitmap _img = new Bitmap(selectWidth, selectHeight);
//create graphic variable
Graphics g = Graphics.FromImage(_img);
//set graphic attributes
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(OriginalImage, 0, 0, rect, GraphicsUnit.Pixel);
//insert image stream into clipboard
_img.Save(@"C:\Users\Public\Documents\snap.png", ImageFormat.Png);
}
else
{
Rectangle rect = new Rectangle(0, 0, pictureBox1.Image.Width, pictureBox1.Image.Height);
Bitmap OriginalImage = new Bitmap(pictureBox1.Image, pictureBox1.Width, pictureBox1.Height);
//create bitmap with selected dimensions
Bitmap _img = new Bitmap(pictureBox1.Image.Width, pictureBox1.Image.Height);
//create graphic variable
Graphics g = Graphics.FromImage(_img);
//set graphic attributes
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.PixelOffsetMode = System.Drawing.Drawing2D.PixelOffsetMode.HighQuality;
g.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
g.DrawImage(OriginalImage, 0, 0, rect, GraphicsUnit.Pixel);
_img.Save(@"C:\Users\Public\Documents\snap.png", ImageFormat.Png);
}
PostToImgur(@"C:\Users\Public\Documents\snap.png", ClientId, ClientSecret);
}
public void PostToImgur(string imagFilePath, string apiKey, string apiSecret)
{
byte[] imageData;
FileStream fileStream = File.OpenRead(imagFilePath);
imageData = new byte[fileStream.Length];
fileStream.Read(imageData, 0, imageData.Length);
fileStream.Close();
const int MAX_URI_LENGTH = 32766;
string base64img = System.Convert.ToBase64String(imageData);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < base64img.Length; i += MAX_URI_LENGTH)
{
sb.Append(Uri.EscapeDataString(base64img.Substring(i, Math.Min(MAX_URI_LENGTH, base64img.Length - i))));
}
string uploadRequestString = "client_id" + apiKey + "client_secret" + apiSecret + "&title=" + "imageTitle" +
"&caption=" + "img" + "&image=" + sb.ToString();
// strin
HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("https://api.imgur.com/3/upload.json");
webRequest.Method = "POST";
webRequest.ContentType = "application/x-www-form-urlencoded";
webRequest.ServicePoint.Expect100Continue = false;
StreamWriter streamWriter = new StreamWriter(webRequest.GetRequestStream());
streamWriter.Write(uploadRequestString);
streamWriter.Close();
WebResponse response = webRequest.GetResponse(); //401 ERROR
Stream responseStream = response.GetResponseStream();
StreamReader responseReader = new StreamReader(responseStream);
string responseString = responseReader.ReadToEnd();
this.Close();
}
}
}
It includes other codes though so it won't work when you try to test it. The error is not in that code, it's really in this. I have the application registered with the API, I have read some Documentary but no where stands where the problem really is. Not even on Google or here.. Thanks in advance :).
EDIT:
Did something with Fiddler but I have no idea how to use it. Here is what the api send (in raw):
CONNECT api.imgur.com:443 HTTP/1.1
Host: api.imgur.com
Connection: Keep-Alive
A SSLv3-compatible ClientHello handshake was found. Fiddler extracted the parameters below.
Version: 3.1 (TLS/1.0)
Random: 52 A8 84 03 80 45 BC AC 57 7A 4B B9 19 88 79 8B 94 A5 43 8A F8 0F 51 4B 07 E1 F8 11 96 33 E1 55
SessionID: empty
Extensions:
renegotiation_info 00
server_name api.imgur.com
elliptic_curves secp256r1 [0x17], secp384r1 [0x18]
ec_point_formats uncompressed [0x0]
SessionTicket TLS empty
Ciphers:
[002F] TLS_RSA_AES_128_SHA
[0035] TLS_RSA_AES_256_SHA
[0005] SSL_RSA_WITH_RC4_128_SHA
[000A] SSL_RSA_WITH_3DES_EDE_SHA
[C013] TLS1_CK_ECDHE_RSA_WITH_AES_128_CBC_SHA
[C014] TLS1_CK_ECDHE_RSA_WITH_AES_256_CBC_SHA
[C009] TLS1_CK_ECDHE_ECDSA_WITH_AES_128_CBC_SHA
[C00A] TLS1_CK_ECDHE_ECDSA_WITH_AES_256_CBC_SHA
[0032] TLS_DHE_DSS_WITH_AES_128_SHA
[0038] TLS_DHE_DSS_WITH_AES_256_SHA
[0013] SSL_DHE_DSS_WITH_3DES_EDE_SHA
[0004] SSL_RSA_WITH_RC4_128_MD5
Compression:
[00] NO_COMPRESSION
Looking at the imgur API docs, and your code, it would appear you are not sending a required header: Authorization: Bearer YOUR_ACCESS_TOKEN. Without this token, your request will be 401.
Finally, after obtaining your access_token, you make your API requests by sending the Authorization header as such:
Authorization: Bearer YOUR_ACCESS_TOKEN
Source: https://api.imgur.com/oauth2
Edit as per your comment: to set the auth header in C#, simply add the following line of code when you are preparing your httpwebrequest:
request.Headers['Authorization'] = 'Bearer ' + YOUR_ACCESS_TOKEN;