kdb+/q interface for BitMex API (REST and WebSocket)
For Windows, use qx.dll or build DLLs. For Linux, build shared objects.
https://github.com/bitmx/btceQ/blob/master/c/hmac512.cpp
or use CryptoQ : https://github.com/asatirahul/cryptoq
c:>set SSL_VERIFY_SERVER=NO (linux: export ...)
c:>q qbitmex.q
settings:`apiHost`apiKey`apiSecret!("testnet.bitmex.com";"";"") //testnet1. BitMex REST API (https://www.bitmex.com/app/restAPI)
restapi[host;verb;path;data;apiKey;apiSecret] // Not authenticating when apiKey or apiSecret = ""
r:restapi[settings`apiHost;"GET";"/api/v1/position";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/apiKey?reverse=false";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/chat?count=100&reverse=true";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/announcement";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/announcement/urgent";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/execution";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/execution/tradeHistory";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/funding";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/instrument";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/order";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/orderBook/L2?symbol=XBTUSD";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/quote?symbol=XBTUSD&reverse=true";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/schema";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/schema/websocketHelp";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/stats";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/trade?symbol=XBTUSD&count=5&start=0&startTime=2018-03-01 00:20:00";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/user";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/user/wallet";"";settings`apiKey;settings`apiSecret];r`body
r:restapi[settings`apiHost;"GET";"/api/v1/user/walletSummary";"";settings`apiKey;settings`apiSecret];r`body
2. WebSocket API (https://www.bitmex.com/app/wsAPI)
wsapi[host;apiKey;apiSecret]: connect to websocket: Not authenticating when apiKey or apiSecret = ""
wshandle: the first element returned from wsapi[...], command: a dict for command args, ex: `op`args!(`subscribe;enlist `$"trade:XBTUSD")r:wsapi[settings`apiHost; settings`apiKey; settings`apiSecret]; wsapi_sub[first[r];"trade:XBTUSD"]wsapi_unsub[first[r];"trade:XBTUSD"] trade:([]timestamp:`timestamp$();price:`float$();size:`float$());
.z.ws:{xx::.j.k[x];if[key[xx]~`table`action`data;
if[xx[`action]~"insert"; `trade insert select ltime`timestamp$"Z"$timestamp,`float$price,`float$size from xx[`data] ]];
};
wsh:wsapi[settings`apiHost; settings`apiKey; settings`apiSecret];
wsapi_sub[first[wsh];"trade:XBTUSD"]
wsapi_unsub[first[wsh];"trade:XBTUSD"]
/Heartbeats: https://www.bitmex.com/app/wsAPI#Heartbeats
wsapi_dt:.z.P;
WS:([]time:`time$();data:());
.z.ws:{wsapi_dt::.z.P; `WS insert (.z.T;x);0N!(.z.T;.z.w)};
wsh:wsapi[settings`apiHost; settings`apiKey; settings`apiSecret];
wsapi_sub[first[wsh];"trade:XBTUSD"];
.z.ts:{if[00:00:05<.z.P-wsapi_dt; @[wsapi_ping;first wsh;`]];
if[00:00:05<.z.P-wsapi_dt;
@[hclose;first[wsh];`];
wsh::.[wsapi;(settings`apiHost;settings`apiKey;settings`apiSecret);`];
if[0<first wsh;.[wsapi_sub;(first[wsh];"trade:XBTUSD");`];wsapi_dt::.z.P];
0N!(.z.Z;first[wsh];`reconnected);
];};
system"t 1000";
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