diff --git a/src/component/CaptchaComp.js b/src/component/CaptchaComp.js
index 2619049..8bd383c 100644
--- a/src/component/CaptchaComp.js
+++ b/src/component/CaptchaComp.js
@@ -2,6 +2,7 @@ const logger = require("logops")
     , { By } = require('selenium-webdriver')
     , url = require('url')
     , fetch = require('node-fetch')
+const { request } = require("./SeleniumBrowser")
 
 
 class CaptchaComp {
@@ -41,21 +42,30 @@ class CaptchaComp {
             o.search = new url.URLSearchParams(params).toString();
             return o
         }
-        let params = Object.assign(this.params.in, { googlekey: params.googlekey, pageurl: params.pageurl })
+        params = Object.assign(this.params.in, { googlekey: params.googlekey, pageurl: params.pageurl })
         let o = new url.URL(this.api.in)
         o.search = new url.URLSearchParams(params).toString();
         return o
     }
 
-    resolveCaptcha(driver) {
+    getParams(params) {
+        return Object.assign({
+            method: 'GET',
+            headers: { "Content-Type": "application/json" },
+            timeout: this.api.retryTimeout
+        }, params)
+    }
+
+    request(params) {
+        return fetch(this.getUrl(params), this.getParams()).then(res => res.json())
+    }
+
+    requestResolve(driver) {
         return driver.findElement(By.css('#grecaptcha iframe')).getAttribute('src')
             .then(src => url.parse(src, true).query.k)
             .then(googlekey => {
                 return driver.getCurrentUrl().then(pageurl => {
-                    return fetch(this.getUrl({ googlekey: googlekey, pageurl: pageurl }), {
-                        method: 'GET',
-                        headers: { "Content-Type": "application/json" }
-                    }).then(res => res.json()).then(res => {
+                    return this.request({ googlekey: googlekey, pageurl: pageurl }).then(res => {
                         logger.debug(res, '2captcha IN-request response')
                         if (!res.hasOwnProperty('request')) {
                             throw new Error('2captcha IN-request response has no data request id : ' + JSON.stringify(res))
@@ -63,21 +73,28 @@ class CaptchaComp {
                         return res.request
                     })
                 })
+            }).then(id => {
+                logger.info({ id: this.api.id }, 'Request answer delay for 20 senconds')
+                return new Promise(r => setTimeout(() => r(id), 20000))
             })
-            .then(async id => {
-                logger.info('Request 2captcha solving result after 20 senconds')
-                await this.sleep(1000 * 20)
-                let res = await fetch(this.getUrl({ id: id })).then(res => res.json())
-                let maxRetry = 10
-                while (res.request == 'CAPCHA_NOT_READY') {
-                    await this.sleep(this.api.retryTimeout)
-                    maxRetry = maxRetry - 1
-                    logger.info('2captcha still working so request solving result after 5 senconds')
-                    res = await fetch(this.getUrl({ id: id })).then(res => res.json())
-                    if (maxRetry == 0) break
-                }
-                return res
-            })
+    }
+
+    async getAnswer(res) {
+        let retryLimit = 10
+        while (res.request == 'CAPCHA_NOT_READY') {
+            await this.sleep(this.api.retryTimeout)
+            retryLimit = retryLimit - 1
+            logger.info('Retry get recap answer in 5 senconds')
+            res = await this.request({ id: id })
+            if (retryLimit == 0) break
+        }
+        return res
+    }
+
+    resolveCaptcha(driver) {
+        return this.requestResolve(driver)
+            .then(id => this.request({ id: id }))
+            .then(res => this.getAnswer(res))
             .then(res => {
                 return driver.executeScript('captchaCallback("' + res.request + '")').then(() => this.sleep(1000 * 5))
             })
diff --git a/src/component/SeleniumBrowser.js b/src/component/SeleniumBrowser.js
index 79c1d1a..7504c42 100644
--- a/src/component/SeleniumBrowser.js
+++ b/src/component/SeleniumBrowser.js
@@ -21,7 +21,7 @@ class SeleniumBrowser {
                         .then(body => body.getAttribute('innerHTML'))
                     let htmlPromise = captcha.isCaptchaPage(html) ? captcha.resolveCaptcha(driver) : this.getHtml(driver, html, params)
                     html = await htmlPromise
-                    this.pool.release(driver)
+                    if (this.pool.isBorrowedResource(driver)) this.pool.release(driver)
                     return html
                 })
         } else {
@@ -38,6 +38,10 @@ class SeleniumBrowser {
                 .then(html => {
                     return html
                 })
+                .catch(err => {
+                    logger.error({ message: err.message }, 'Get html failed')
+                    this.pool.release(driver)
+                })
         } else {
             return html
         }