# hook xhr 结合小程序安全加速

<script src="https://unpkg.com/ajax-hook@3.0.3/dist/ajaxhook.min.js"></script>

const c1 = new cloud.Cloud({
identityless: true,
resourceAppid: '***', // appid，填入接入的小程序 appid
config: {
    customDomain: 'https://a1d5ad78d-***.sh.wxcloudrun.com' // 网关接入节点域名
}
})
c1.init() // 初始化实例
const gateway = c1.services.Gateway({ domain: 'a1d5ad78d-****.sh.wxcloudrun.com' }) // 网关接入节点域名，不包含协议头

const RESOLVE_GATEWAY_DOMAIN = ["https://domain/"]
const GWFALLBACK=true

const UNPARSE_JSON = false //控制是否强制解json，true 时为不解json，返回为 string 格式
const UNPARES_URL_PERFIX = RESOLVE_GATEWAY_DOMAIN //配置是否解 json的路径


function checkDomain(ob1,ob2){
    for (var i=0;i<ob1.length;i++)
    { 
        if(ob2.startsWith(ob1[i])>0){
            return true
        }
    }
    return false
} 

ah.proxy({
    onRequest: (config, handler) => {
        //config = sigcrypto(config) //加签逻辑
        if (checkDomain(RESOLVE_GATEWAY_DOMAIN,config.url) ) {
            let nheader = config.headers
            nheader["X-WX-HTTP-MODE"]= 'REROUTE'
            gateway.call({
            method:config.method,
            path:config.url,
            header:nheader,
            data:config.body,
            apiVersion:3,
            }
            ).then(res => {
                if (UNPARSE_JSON && checkDomain(UNPARES_URL_PERFIX,config.url) && res.header['content-type']=='application/json'){
                    res.data = JSON.stringify(res.data)
                }
                if (res.errMsg=="gateway.call:ok"){
                    handler.resolve(
                        {
                        config:config,
                        status:res.statusCode,
                        response:res.data,
                        headers:res.header
                        }
                    )
                }else{
                    if (GWFALLBACK){
                        handler.next(config)
                    }else{
                        handler.resolve(
                            {
                            config:config,
                            status:res.statusCode,
                            response:res.data,
                            headers:res.header
                            }
                        )
                    }
                }
            }).catch((error)=>{
                if (GWFALLBACK){
                    handler.next(config)
                }else{
                    handler.resolve(
                        {
                        config:config,
                        status:error.errCode,
                        response:error.errMsg
                        }
                    )
                }
            })
        } else {
        handler.next(config);
        }
        
    }
})

<script src="https://web-9gikcbug35bad3a8-1304825656.tcloudbaseapp.com/sdk/2.1.0/cloud.js" importance="VeryHigh"></script>
<script src="./ajaxhook.min.js"></script>
<script src="gwpatch.js"></script>