websdk初始化超时

各位好，碰到个问题，麻烦帮忙看看怎么排查。

websdk2.3.1版本里的demo初始化正常，自己写的代码初始化一直超时

JIM.init({
                "appkey": appKey,
                "random_str": random_str,
                "signature": signature,
                "timestamp": timestamp,
                "flag": flag
            }).onAck(function(data){
                console.log('ack【】:' + JSON.stringify(data));
            }).onSuccess(function(data) {
                console.log('success:' + JSON.stringify(data));
                appendToDashboard('success' + JSON.stringify(data));
            }).onFail(function(data) {
                console.log('error:' + JSON.stringify(data))
                appendToDashboard('error: ' +JSON.stringify(data));
            }).onTimeout(function(data){
                console.log('timeout' + JSON.stringify(data));
            });

onTimeout返回

{"rid":1635581666,"data":
{"appkey":"f1722f0308fafb7b7887d208",
"random_str":"022cd9fd995849b58b3ef0e943421ed9",
"signature":"72252557d18b0fcd6ca815561b7bd79f",
"timestamp":"1506587950.6975","flag":"1","fromPlatForm":"j"},
"response_timeout":true}