Implement payment gatway of coinpayments

Hi Nanddeep Nachan Sir,

I am implement in WebBased website not project

i am using c# code in our web code from https://www.coinpayments.net/apidoc-code ->

C# Library.

public Dictionary CallAPI(string cmd, SortedList parms = null)
{
if (parms == null)
{
parms = new SortedList();
}
parms["version"] = "1";
parms["key"] = s_pubkey;
parms["cmd"] = cmd;
parms["format"] = "json";
string post_data = "";
foreach (KeyValuePair parm in parms)
{
if (post_data.Length > 0) { post_data += "&"; }
post_data += parm.Key + "=" + Uri.EscapeDataString(parm.Value);
}
byte[] keyBytes = encoding.GetBytes(s_privkey);
byte[] postBytes = encoding.GetBytes(post_data);
var hmacsha512 = new System.Security.Cryptography.HMACSHA512(keyBytes);
string hmac = BitConverter.ToString(hmacsha512.ComputeHash(postBytes)).Replace("-", string.Empty);
// do the post:
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls;
System.Net.WebClient cl = new System.Net.WebClient();
cl.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
cl.Headers.Add("HMAC", hmac);
cl.Encoding = encoding;
var ret = new Dictionary();
try
{
string resp = cl.UploadString("https://www.coinpayments.net/api.php", post_data);
var decoder = new System.Web.Script.Serialization.JavaScriptSerializer();
ret = decoder.Deserialize>(resp);
}
catch (System.Net.WebException e)
{
ret["error"] = "Exception while contacting CoinPayments.net: " + e.Message;
}
catch (Exception e)
{
ret["error"] = "Unknown exception: " + e.Message;
}
lblmsg.Text = ret["error"];
return ret;
}

Code call on Button click event

protected void btn_Click(object sender, EventArgs e)
{
CallAPI("get_basic_info", null);
}

use this code and get error-:

The request was aborted: Could not create SSL/TLS secure channel.

Please help sir

6 Replies

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saleem usmani8y ago
Thanks for reply Nanddeep Nachan Sir ,

I am change our code acordding to your but face same problem still please any one suggetion sir ,

error : -

The request was aborted: Could not create SSL/TLS secure channel.
Nanddeep Nachan8y ago
Also, plesae refer thread here:
https://www.c-sharpcorner.com/forums/ssl-httpwebrequest-in-c-sharp-could-not-create-ssltls-secure-channel
Nanddeep Nachan8y ago
Try by adding below lines at beginning of your code
ServicePointManager.Expect100Continue = true;
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
saleem usmani8y ago
Hi Nanddeep Nachan Sir,

I am implement in WebBased website not project

i am using c# code in our web code from https://www.coinpayments.net/apidoc-code ->

C# Library.
public Dictionary CallAPI(string cmd, SortedList parms = null)
{
if (parms == null)
{
parms = new SortedList();
}
parms["version"] = "1";
parms["key"] = s_pubkey;
parms["cmd"] = cmd;
parms["format"] = "json";
string post_data = "";
foreach (KeyValuePair parm in parms)
{
if (post_data.Length > 0) { post_data += "&"; }
post_data += parm.Key + "=" + Uri.EscapeDataString(parm.Value);
}
byte[] keyBytes = encoding.GetBytes(s_privkey);
byte[] postBytes = encoding.GetBytes(post_data);
var hmacsha512 = new System.Security.Cryptography.HMACSHA512(keyBytes);
string hmac = BitConverter.ToString(hmacsha512.ComputeHash(postBytes)).Replace("-", string.Empty);
// do the post:
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls;
System.Net.WebClient cl = new System.Net.WebClient();
cl.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
cl.Headers.Add("HMAC", hmac);
cl.Encoding = encoding;
var ret = new Dictionary();
try
{
string resp = cl.UploadString("https://www.coinpayments.net/api.php", post_data);
var decoder = new System.Web.Script.Serialization.JavaScriptSerializer();
ret = decoder.Deserialize>(resp);
}
catch (System.Net.WebException e)
{
ret["error"] = "Exception while contacting CoinPayments.net: " + e.Message;
}
catch (Exception e)
{
ret["error"] = "Unknown exception: " + e.Message;
}
lblmsg.Text = ret["error"];
return ret;
}
Code call on Button click event
protected void btn_Click(object sender, EventArgs e)
{
CallAPI("get_basic_info", null);
}
use this code and get error-:

The request was aborted: Could not create SSL/TLS secure channel.

Please help sir
saleem usmani8y ago
please anyone help.......................
Nanddeep Nachan8y ago
Here is Full fledged C# wrapper for Coinpayments API:
https://github.com/rockstardev/CoinpaymentsApi