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polo-spot-sdk's Issues
docs make no sense
No method in API using example
In example file of Node.js requests there are no method getSign in class Sign. Buy it is used in delete and put methods
401 error
Hi on Dart i try to reach AUth https. However i got 401 error. I followed every single instructions on api document. Signature i correct, payload is correct.. but i got 401 error.. Could you please help about this issue?
Thanks
import 'dart:convert';
import 'package:crypto/crypto.dart';
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
const String poloniexPrivateApiKey = "xxxxxxxxxx";
const String poloniexPrivateSecretKey = "xxxxxxxx";
const String url = "https://api.poloniex.com";
const String publicApiUrl = "https://poloniex.com/public";
class PoloniexApiClient {
static String v2Accounts = "/accounts";
static String v2Orders = "/orders";
static String v2Markets = "/markets";
String apiKey;
String secretKey;
String host;
PoloniexApiClient({this.apiKey = poloniexPrivateApiKey, this.secretKey = poloniexPrivateSecretKey, this.host = url});
Future accounts() async {
try {
Map<String, dynamic> map = {};
var response = await PoloniexSignatureHelper.generateResponse(apiKey, secretKey, host, v2Accounts, map);
debugPrint("accountResponse: ${response.toString()}");
} catch (e) {
debugPrint(e.toString());
}
}
}
class PoloniexSignatureHelper {
static String contentType = "Content-Type";
static String jsonType = "application/json";
static String requestMethodGet = "GET";
static String requestMethodPost = "POST";
static String requestMethodDelete = "DELETE";
static String headerTimeStamp = "signTimestamp";
static String headerKey = "key";
static String headerSignMethod = "signatureMethod";
static String headerSignVersion = "signatureVersion";
static String headerSignature = "signature";
static String signatureMethodValue = "HmacSHA256";
static String signatureVersionValue = "2";
static Future<String> generateResponse(String apiKey, secretKey, host, path, Map<String, dynamic> paramMap) async {
String timestamp = DateTime.now().millisecondsSinceEpoch.toString();
String payload = generateSignatureRequestString(requestMethodGet, path, timestamp, paramMap);
print(payload);
String signature = generateSignature(secretKey, payload);
print(signature);
String response = await executeRequest(host, path, apiKey, timestamp, signature, paramMap);
print(response);
return response;
}
static String generateSignatureRequestString(String method, path, timestamp, Map<String, dynamic> paramMap) {
var sortedParamMap = sortMapASCII(paramMap, timestamp);
var encoded;
if (method == requestMethodGet) {
encoded = sortedParamMap.keys
.map((key) => "${Uri.encodeComponent(key)}=${Uri.encodeComponent(paramMap[key].toString())}")
.join("&");
} else {
sortedParamMap.remove(headerTimeStamp);
var requestBody = jsonEncode(sortedParamMap);
encoded = "requestBody=$requestBody&signTimestamp=$timestamp";
}
var requestString = method + "\n" + path + "\n" + encoded;
return requestString;
}
static String generateSignature(String secretKey, String requestString) {
final keyBytes = base64Decode(secretKey);
final dataBytes = utf8.encode(requestString);
final hMacBytes = Hmac(sha256, keyBytes).convert(dataBytes).bytes;
final hMacBase64 = base64Encode(hMacBytes);
var sign = hMacBase64;
return sign;
}
static Future<String> executeRequest(
String host, path, apiKey, timestamp, signature, Map<String, dynamic> paramMap) async {
String url = host + path;
if (paramMap.isNotEmpty && paramMap.length > 0) {
var queryStringBuffer = "?";
paramMap.forEach((key, value) {
queryStringBuffer = queryStringBuffer + key + "=" + value.toString() + "&";
});
String queryString = queryStringBuffer.substring(0, queryStringBuffer.length - 1);
url = url + queryString;
}
print(url);
Map<String, String> _headers = {
// contentType: jsonType,
// contentType: "application/x-www-form-urlencoded",
headerKey: apiKey,
headerSignMethod: signatureMethodValue,
headerSignVersion: signatureVersionValue,
headerTimeStamp: timestamp,
headerSignature: signature
};
var result;
try {
var response = await http.get(Uri.parse(url), headers: _headers);
// if (response.statusCode == 200) {
// String data = response.body;
// result = data;
// }
result = response.statusCode.toString(); // return 401??
} catch (e) {
result = e.toString();
}
return result;
}
static Map<String, dynamic> sortMapASCII(Map<String, dynamic> paramMap, timestamp) {
paramMap.addAll({headerTimeStamp: timestamp});
var paramKeys = paramMap.keys.map((key) => "$key").toList();
paramKeys.sort(((a, b) => a.compareTo(b)));
Map<String, dynamic> sortedParamMap = {};
paramKeys.forEach((key) => sortedParamMap.addAll({"$key": "${paramMap[key]}"}));
print(sortedParamMap);
return sortedParamMap;
}
}
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