Topic: Poloniex tradingApi, from JAVA (Read 5080 times)
why dont you try to use the push api, if you are not behind an internet proxy i suggest you to use it for getting all the info, i havent been able to use it but it is because i am behind a proxy and i havent found a solution for the existing wamp libraries in java to set this configuration, on internet there is an example of how to with poliniex
I also tried to connect to the Poloniex API with Java. I followed some advice from this thread and came up with the following code, but for some reason, I always get the error: Invalid command
Any idea what I am doing wrong?
Any idea what I am doing wrong?
Code:
public static String POLONIEX_SECRET_KEY = "my secret"; //KEY
public static String POLONIEX_API_KEY = "my key"; // TODO API KEY
public static void main(String[] args) {
try {
accessPoloniex();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static final long generateNonce(){
Date d = new Date();
return d.getTime();
}
public static final void accessPoloniex() throws IOException{
String nonce = new BigDecimal(Polo2.generateNonce()).toString();
String connectionString = "https://poloniex.com/tradingApi";
String queryArgs = "command=returnBalances";
String hmac512 = hmac512Digest(queryArgs, POLONIEX_SECRET_KEY);
// Produce the output
ByteArrayOutputStream out = new ByteArrayOutputStream();
Writer writer = new OutputStreamWriter(out, "UTF-8");
writer.append(queryArgs);
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost post = new HttpPost(connectionString);
post.setHeader("Key", POLONIEX_API_KEY);
post.setHeader("Sign", hmac512);
post.setEntity(new ByteArrayEntity(out.toByteArray()));
List params = new ArrayList<>();
params.add(new BasicNameValuePair("nonce", nonce));
CloseableHttpResponse response = null;
Scanner in = null;
try
{
post.setEntity(new UrlEncodedFormEntity(params));
response = httpClient.execute(post);
// System.out.println(response.getStatusLine());
HttpEntity entity = response.getEntity();
in = new Scanner(entity.getContent());
while (in.hasNext())
{
System.out.println(in.next());
}
EntityUtils.consume(entity);
} finally
{
in.close();
response.close();
}
}
public static String hmac512Digest(String msg, String keyString) {
Mac shaMac;
try {
shaMac = Mac.getInstance("HmacSHA512");
SecretKeySpec keySpec = new SecretKeySpec(keyString.getBytes(), "HmacSHA512");
shaMac.init(keySpec);
final byte[] macData = shaMac.doFinal(msg.getBytes());
return Hex.encodeHexString(macData); //again with try/catch for InvalidKeyException
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return null;
}
public static String POLONIEX_API_KEY = "my key"; // TODO API KEY
public static void main(String[] args) {
try {
accessPoloniex();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static final long generateNonce(){
Date d = new Date();
return d.getTime();
}
public static final void accessPoloniex() throws IOException{
String nonce = new BigDecimal(Polo2.generateNonce()).toString();
String connectionString = "https://poloniex.com/tradingApi";
String queryArgs = "command=returnBalances";
String hmac512 = hmac512Digest(queryArgs, POLONIEX_SECRET_KEY);
// Produce the output
ByteArrayOutputStream out = new ByteArrayOutputStream();
Writer writer = new OutputStreamWriter(out, "UTF-8");
writer.append(queryArgs);
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost post = new HttpPost(connectionString);
post.setHeader("Key", POLONIEX_API_KEY);
post.setHeader("Sign", hmac512);
post.setEntity(new ByteArrayEntity(out.toByteArray()));
List
params.add(new BasicNameValuePair("nonce", nonce));
CloseableHttpResponse response = null;
Scanner in = null;
try
{
post.setEntity(new UrlEncodedFormEntity(params));
response = httpClient.execute(post);
// System.out.println(response.getStatusLine());
HttpEntity entity = response.getEntity();
in = new Scanner(entity.getContent());
while (in.hasNext())
{
System.out.println(in.next());
}
EntityUtils.consume(entity);
} finally
{
in.close();
response.close();
}
}
public static String hmac512Digest(String msg, String keyString) {
Mac shaMac;
try {
shaMac = Mac.getInstance("HmacSHA512");
SecretKeySpec keySpec = new SecretKeySpec(keyString.getBytes(), "HmacSHA512");
shaMac.init(keySpec);
final byte[] macData = shaMac.doFinal(msg.getBytes());
return Hex.encodeHexString(macData); //again with try/catch for InvalidKeyException
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return null;
}
I haven't tried your code but two things that work in my code:
- nonce is part of the query string
- I use System.currentTimeMillis() to create the nonce. Not sure if your way will work or not but I know mine does and its much simpler.
I also tried to connect to the Poloniex API with Java. I followed some advice from this thread and came up with the following code, but for some reason, I always get the error: Invalid command
Any idea what I am doing wrong?
Any idea what I am doing wrong?
Code:
public static String POLONIEX_SECRET_KEY = "my secret"; //KEY
public static String POLONIEX_API_KEY = "my key"; // TODO API KEY
public static void main(String[] args) {
try {
accessPoloniex();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static final long generateNonce(){
Date d = new Date();
return d.getTime();
}
public static final void accessPoloniex() throws IOException{
String nonce = new BigDecimal(Polo2.generateNonce()).toString();
String connectionString = "https://poloniex.com/tradingApi";
String queryArgs = "command=returnBalances";
String hmac512 = hmac512Digest(queryArgs, POLONIEX_SECRET_KEY);
// Produce the output
ByteArrayOutputStream out = new ByteArrayOutputStream();
Writer writer = new OutputStreamWriter(out, "UTF-8");
writer.append(queryArgs);
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost post = new HttpPost(connectionString);
post.setHeader("Key", POLONIEX_API_KEY);
post.setHeader("Sign", hmac512);
post.setEntity(new ByteArrayEntity(out.toByteArray()));
List params = new ArrayList<>();
params.add(new BasicNameValuePair("nonce", nonce));
CloseableHttpResponse response = null;
Scanner in = null;
try
{
post.setEntity(new UrlEncodedFormEntity(params));
response = httpClient.execute(post);
// System.out.println(response.getStatusLine());
HttpEntity entity = response.getEntity();
in = new Scanner(entity.getContent());
while (in.hasNext())
{
System.out.println(in.next());
}
EntityUtils.consume(entity);
} finally
{
in.close();
response.close();
}
}
public static String hmac512Digest(String msg, String keyString) {
Mac shaMac;
try {
shaMac = Mac.getInstance("HmacSHA512");
SecretKeySpec keySpec = new SecretKeySpec(keyString.getBytes(), "HmacSHA512");
shaMac.init(keySpec);
final byte[] macData = shaMac.doFinal(msg.getBytes());
return Hex.encodeHexString(macData); //again with try/catch for InvalidKeyException
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return null;
}
public static String POLONIEX_API_KEY = "my key"; // TODO API KEY
public static void main(String[] args) {
try {
accessPoloniex();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static final long generateNonce(){
Date d = new Date();
return d.getTime();
}
public static final void accessPoloniex() throws IOException{
String nonce = new BigDecimal(Polo2.generateNonce()).toString();
String connectionString = "https://poloniex.com/tradingApi";
String queryArgs = "command=returnBalances";
String hmac512 = hmac512Digest(queryArgs, POLONIEX_SECRET_KEY);
// Produce the output
ByteArrayOutputStream out = new ByteArrayOutputStream();
Writer writer = new OutputStreamWriter(out, "UTF-8");
writer.append(queryArgs);
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost post = new HttpPost(connectionString);
post.setHeader("Key", POLONIEX_API_KEY);
post.setHeader("Sign", hmac512);
post.setEntity(new ByteArrayEntity(out.toByteArray()));
List
params.add(new BasicNameValuePair("nonce", nonce));
CloseableHttpResponse response = null;
Scanner in = null;
try
{
post.setEntity(new UrlEncodedFormEntity(params));
response = httpClient.execute(post);
// System.out.println(response.getStatusLine());
HttpEntity entity = response.getEntity();
in = new Scanner(entity.getContent());
while (in.hasNext())
{
System.out.println(in.next());
}
EntityUtils.consume(entity);
} finally
{
in.close();
response.close();
}
}
public static String hmac512Digest(String msg, String keyString) {
Mac shaMac;
try {
shaMac = Mac.getInstance("HmacSHA512");
SecretKeySpec keySpec = new SecretKeySpec(keyString.getBytes(), "HmacSHA512");
shaMac.init(keySpec);
final byte[] macData = shaMac.doFinal(msg.getBytes());
return Hex.encodeHexString(macData); //again with try/catch for InvalidKeyException
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
return null;
}
I have exactly the same problem with http post call in JavaScript. It has to be the hash method as I can change the hash string and it doesn't care when I send it. Get the invalid command return on all private post calls, even after Poloniex guy sent me a sample call for the post call. I am stumped as well at this point, but will post if I figure it out.
Best of Luck!
Best of Luck!
The hash method works, I successfully connect to Poloniex. You need to add an HTTP header with your public API key and another one with the the encrypted query args; the query args (plain as in not encrypted) you also write on the connection outputstream (same for JavaScript, Java, Python etc.).
so in Java that would look like this:
Code:
...
conn.setRequestProperty("Key", "your public key");
//build your args query parameter String (needs to include "command", "nonce" ), e.g.
String queryArgs = "command=cancelOrder&orderNumber=12345"
//encrypt the queryArgs using HmacSHA512. In java that looks something like this
Mac shaMac = Mac.getInstance("HmacSHA512") //with try/catch for NoSuchAlgorithmException
SecretKeySpec keySpec = new SecretKeySpec(.getBytes(), "HmacSHA512");
shaMac.init(keySpec);
final byte[] macData = shaMac.doFinal(queryArgs.getBytes());
String result = Hex.encodeHexString(macData); //again with try/catch for InvalidKeyException
//this result you add as header param
conn.setRequestProperty("Sign", result);
//and the queryArgs themselves you write onto the connection's outputstream
OutputStreamWriter out = new OutputStreamWriter(conn.getOutputStream());
out.write(queryArgs);
...
conn.setRequestProperty("Key", "your public key");
//build your args query parameter String (needs to include "command", "nonce" ), e.g.
String queryArgs = "command=cancelOrder&orderNumber=12345"
//encrypt the queryArgs using HmacSHA512. In java that looks something like this
Mac shaMac = Mac.getInstance("HmacSHA512") //with try/catch for NoSuchAlgorithmException
SecretKeySpec keySpec = new SecretKeySpec(
shaMac.init(keySpec);
final byte[] macData = shaMac.doFinal(queryArgs.getBytes());
String result = Hex.encodeHexString(macData); //again with try/catch for InvalidKeyException
//this result you add as header param
conn.setRequestProperty("Sign", result);
//and the queryArgs themselves you write onto the connection's outputstream
OutputStreamWriter out = new OutputStreamWriter(conn.getOutputStream());
out.write(queryArgs);
...
But without posting your code it is impossible to assist!
Regards,
Sebastian
Java != JavaScript ?
I have exactly the same problem with http post call in JavaScript. It has to be the hash method as I can change the hash string and it doesn't care when I send it. Get the invalid command return on all private post calls, even after Poloniex guy sent me a sample call for the post call. I am stumped as well at this point, but will post if I figure it out.
Best of Luck!
Best of Luck!
I throw this question out here in hope of some input, I am totally stuck here ....
I am trying to access the Poloniex tradingApi from JAVA code, and all I get is the error "invalid command". A standalone static (utilities) method that illustrates the problem
public static final long generateNonce(){
Date d = new Date();
return d.getTime();
}
public static final String getAddressPoloniex(String currency, double amount, String address) throws IOException{
String result = null;
String nonce = new BigDecimal(WithdrawUtils.generateNonce()).toString();
String connectionString = "https://poloniex.com/trading?command=returnDepositAddresses&nonce="+nonce;
String hmac512 = MyUtils.hmac512Digest(connectionString, Keys.POLONIEX_SECRET_KEY);
HttpsURLConnection poloniexCon = null;
try {
poloniexCon = (HttpsURLConnection)new URL(connectionString).openConnection();
poloniexCon.addRequestProperty("Key", Keys.POLONIEX_API_KEY);
poloniexCon.addRequestProperty("Sign", hmac512);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
poloniexCon.setRequestMethod("POST");
} catch (ProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
poloniexCon.setRequestProperty("Content-length", String.valueOf(connectionString.length()));
poloniexCon.setRequestProperty("Content-Type","application/x-www- form-urlencoded");
poloniexCon.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0;Windows98;DigExt)");
poloniexCon.setDoInput(true);
DataInputStream input = new DataInputStream( poloniexCon.getInputStream() );
StringBuffer s = new StringBuffer();
for( int c = input.read(); c != -1; c = input.read() ) {
s.append((char)c);
}
result = s.toString();
input.close();
return result; // here result has {"error":"Invalid command."}
}
This approach works well with for example Bittrex exchange. My feeling is that the problem is in the HMAC SHA512 signing. I do that like this:
public static String hmac512Digest(String msg, String keyString) {
String digest = null;
try {
SecretKeySpec key = new SecretKeySpec((keyString).getBytes("UTF-8"), "HmacSHA512");
Mac mac = Mac.getInstance("HmacSHA512");
mac.init(key);
byte[] bytes = mac.doFinal(msg.getBytes("ASCII"));
StringBuffer hash = new StringBuffer();
for (int i = 0; i < bytes.length; i++) {
String hex = Integer.toHexString(0xFF & bytes);
if (hex.length() == 1) {
hash.append('0');
}
hash.append(hex);
}
digest = hash.toString();
} catch (UnsupportedEncodingException e) {
} catch (InvalidKeyException e) {
} catch (NoSuchAlgorithmException e) {
}
return digest;
}
If it is not that, I am out of ideas. This HMAC digest works fine with Bittrex. The Poloniex API doc is relatively brief on how this should be calculated. The error is confusing and indicates there is a problem with the command, but all other commands to the trading (private) API gives me the same error. All calls to the public API works fine. I have spent several hours on this now. I know my keys are fine, they work with python code.
The first person with a solution that actually fixes this and send me / post their BTC address will get a 0.1 BTC bounty!
/
I am trying to access the Poloniex tradingApi from JAVA code, and all I get is the error "invalid command". A standalone static (utilities) method that illustrates the problem
public static final long generateNonce(){
Date d = new Date();
return d.getTime();
}
public static final String getAddressPoloniex(String currency, double amount, String address) throws IOException{
String result = null;
String nonce = new BigDecimal(WithdrawUtils.generateNonce()).toString();
String connectionString = "https://poloniex.com/trading?command=returnDepositAddresses&nonce="+nonce;
String hmac512 = MyUtils.hmac512Digest(connectionString, Keys.POLONIEX_SECRET_KEY);
HttpsURLConnection poloniexCon = null;
try {
poloniexCon = (HttpsURLConnection)new URL(connectionString).openConnection();
poloniexCon.addRequestProperty("Key", Keys.POLONIEX_API_KEY);
poloniexCon.addRequestProperty("Sign", hmac512);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
poloniexCon.setRequestMethod("POST");
} catch (ProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
poloniexCon.setRequestProperty("Content-length", String.valueOf(connectionString.length()));
poloniexCon.setRequestProperty("Content-Type","application/x-www- form-urlencoded");
poloniexCon.setRequestProperty("User-Agent", "Mozilla/4.0 (compatible; MSIE 5.0;Windows98;DigExt)");
poloniexCon.setDoInput(true);
DataInputStream input = new DataInputStream( poloniexCon.getInputStream() );
StringBuffer s = new StringBuffer();
for( int c = input.read(); c != -1; c = input.read() ) {
s.append((char)c);
}
result = s.toString();
input.close();
return result; // here result has {"error":"Invalid command."}
}
This approach works well with for example Bittrex exchange. My feeling is that the problem is in the HMAC SHA512 signing. I do that like this:
public static String hmac512Digest(String msg, String keyString) {
String digest = null;
try {
SecretKeySpec key = new SecretKeySpec((keyString).getBytes("UTF-8"), "HmacSHA512");
Mac mac = Mac.getInstance("HmacSHA512");
mac.init(key);
byte[] bytes = mac.doFinal(msg.getBytes("ASCII"));
StringBuffer hash = new StringBuffer();
for (int i = 0; i < bytes.length; i++) {
String hex = Integer.toHexString(0xFF & bytes);
if (hex.length() == 1) {
hash.append('0');
}
hash.append(hex);
}
digest = hash.toString();
} catch (UnsupportedEncodingException e) {
} catch (InvalidKeyException e) {
} catch (NoSuchAlgorithmException e) {
}
return digest;
}
If it is not that, I am out of ideas. This HMAC digest works fine with Bittrex. The Poloniex API doc is relatively brief on how this should be calculated. The error is confusing and indicates there is a problem with the command, but all other commands to the trading (private) API gives me the same error. All calls to the public API works fine. I have spent several hours on this now. I know my keys are fine, they work with python code.
The first person with a solution that actually fixes this and send me / post their BTC address will get a 0.1 BTC bounty!
/
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