SDK Development Library
Signature Examplejava /**
Generate signature **/ private String toSign(String timestamp, String method, String requestPath, String queryString, String body, String secretKey) throws Exception { // Pre-hash string String preHash = preHash(timestamp, method, requestPath, queryString, body); byte[] secretKeyBytes = secretKey.getBytes("UTF-8"); SecretKeySpec secretKeySpec = new SecretKeySpec(secretKeyBytes, "HmacSHA256"); Mac mac = (Mac) MAC.clone(); mac.init(secretKeySpec); return Hex.encodeHexString(mac.doFinal(preHash.getBytes("UTF-8"))); }
/**
Construct pre-hash string **/ private String preHash(String timestamp, String method, String requestPath, String queryString, String body) { StringBuilder preHash = new StringBuilder(); preHash.append(timestamp); preHash.append(method.toUpperCase()); preHash.append(requestPath); if (org.apache.commons.lang3.StringUtils.isNotEmpty(queryString)) { preHash.append("?").append(queryString); } if (org.apache.commons.lang3.StringUtils.isNotEmpty(body)) { preHash.append(body); } return preHash.toString(); }
/**
Extract query string **/ private String queryString(ServerHttpRequest request) { String url = request.getURI().toString(); String queryString = ""; if (url.contains("?")) { queryString = url.substring(url.lastIndexOf("?") + 1); } return queryString; } Order Creation Example Java
java OkHttpClient client = new OkHttpClient().newBuilder().build(); MediaType mediaType = MediaType.parse("application/json"); RequestBody body = RequestBody.create(mediaType, "{"symbol":"BTCUSDT","volume":1,"side":"BUY","type":"LIMIT","price":10000,"newClientOrderId":"","recvWindow":5000}"); Request request = new Request.Builder() .url("https://openapi.xxx.com") .method("POST", body) .addHeader("X-CH-APIKEY", "Your API key") .addHeader("X-CH-TS", "1596543296058") .addHeader("Content-Type", "application/json") .addHeader("X-CH-SIGN", "encrypted signature") .build(); Response response = client.newCall(request).execute(); Go
go package main import ( "fmt" "strings" "net/http" "io/ioutil" ) func main() { url := "https://openapi.xxx.com" method := "POST" payload := strings.NewReader({"symbol":"BTCUSDT","volume":1,"side":"BUY","type":"LIMIT","price":10000,"newClientOrderId":"","recvWindow":5000}) client := &http.Client {} req, err := http.NewRequest(method, url, payload) if err != nil { fmt.Println(err) } req.Header.Add("X-CH-APIKEY", "Your API key") req.Header.Add("X-CH-TS", "1596543881257") req.Header.Add("Content-Type", "application/json") req.Header.Add("X-CH-SIGN", "encrypted signature") res, err := client.Do(req) defer res.Body.Close() body, err := ioutil.ReadAll(res.Body) fmt.Println(string(body)) } Python
python import requests url = "https://openapi.xxx.com" payload = { "symbol": "BTCUSDT", "volume": 1, "side": "BUY", "type": "LIMIT", "price": 10000, "newClientOrderId": "", "recvWindow": 5000 } headers = { 'X-CH-APIKEY': 'Your API key', 'X-CH-TS': '1596543881257', 'Content-Type': 'application/json', 'X-CH-SIGN': 'encrypted signature' } response = requests.post(url, headers=headers, json=payload) print(response.text) PHP
php
setUrl('https://openapi.xxx.com'); $request->setMethod(HTTP_Request2::METHOD_POST); $request->setConfig(['follow_redirects' => TRUE]); $request->setHeader([ 'X-CH-APIKEY' => 'Your API key', 'X-CH-TS' => '1596543881257', 'Content-Type' => 'application/json', 'X-CH-SIGN' => 'encrypted signature' ]); $request->setBody('{"symbol":"BTCUSDT","volume":1,"side":"BUY","type":"LIMIT","price":10000,"newClientOrderId":"","recvWindow":5000}'); try { $response = $request->send(); if ($response->getStatus() == 200) { echo $response->getBody(); } else { echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' . $response->getReasonPhrase(); } } catch(HTTP_Request2_Exception $e) { echo 'Error: ' . $e->getMessage(); } Node.js javascript const request = require('request'); const options = { method: 'POST', url: 'https://openapi.xxx.com', headers: { 'X-CH-APIKEY': 'Your API key', 'X-CH-TS': '1596543881257', 'Content-Type': 'application/json', 'X-CH-SIGN': 'encrypted signature' }, body: JSON.stringify({ symbol: "BTCUSDT", volume: 1, side: "BUY", type: "LIMIT", price: 10000, newClientOrderId: "", recvWindow: 5000 }) }; request(options, (error, response) => { if (error) throw new Error(error); console.log(response.body); });
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