Merge branch 'develop' of github.com:MetaMask/metamask-extension into network-controller-remove-setNetworkEndpoints

7 files changed, 391 insertions, 32 deletions

diff --git a/app/_locales/en/messages.json b/app/_locales/en/messages.json
index a40c2635c..90beda418 100644
--- a/app/_locales/en/messages.json
+++ b/app/_locales/en/messages.json
@@ -393,6 +393,9 @@
     "message": "Imported",
     "description": "status showing that an account has been fully loaded into the keyring"
   },
+  "importUsingSeed": {
+    "message": "Import using account seed phrase"
+  },
   "infoHelp": {
     "message": "Info & Help"
   },
@@ -632,7 +635,7 @@
     "message": "Reset Account"
   },
   "restoreFromSeed": {
-    "message": "Restore from seed phrase"
+    "message": "Restore account?"
   },
   "restoreVault": {
     "message": "Restore Vault"
@@ -721,7 +724,7 @@
     "message": "New Password (min 8 chars)"
   },
   "seedPhraseReq": {
-    "message": "seed phrases are 12 words long"
+    "message": "Seed phrases are 12 words long"
   },
   "select": {
     "message": "Select"
@@ -896,6 +899,9 @@
   "unknownNetworkId": {
     "message": "Unknown network ID"
   },
+  "unlockMessage": {
+    "message": "The decentralized web awaits"
+  },
   "uriErrorMsg": {
     "message": "URIs require the appropriate HTTP/HTTPS prefix."
   },
@@ -924,6 +930,9 @@
   "warning": {
     "message": "Warning"
   },
+  "welcomeBack": {
+    "message": "Welcome Back!"
+  },
   "welcomeBeta": {
     "message": "Welcome to MetaMask Beta"
   },
diff --git a/app/_locales/sl/messages.json b/app/_locales/sl/messages.json
index b089f3476..25bd0bcbb 100644
--- a/app/_locales/sl/messages.json
+++ b/app/_locales/sl/messages.json
@@ -181,7 +181,7 @@
     "message": "DEN je vaša šifrirana shramba v MetaMasku."
   },
   "deposit": {
-    "message": "Vplačilo"
+    "message": "Vplačaj"
   },
   "depositBTC": {
     "message": "Vplačajte vaš BTC na spodnji naslov:"
@@ -507,10 +507,10 @@
     "message": "Ni se začelo"
   },
   "oldUI": {
-    "message": "Starejši uporabniški vmesnik"
+    "message": "Star UI"
   },
   "oldUIMessage": {
-    "message": "Vrnili ste se v starejši uporabniški vmesnik. V novega se lahko vrnete z možnostjo v spustnem meniju v zgornjem desnem kotu."
+    "message": "Vrnili ste se v star uporabniški vmesnik. V novega se lahko vrnete z možnostjo v spustnem meniju v zgornjem desnem kotu."
   },
   "or": {
     "message": "ali",
@@ -759,7 +759,7 @@
     "message": "Vpišite vaše geslo"
   },
   "uiWelcome": {
-    "message": "Dobrodošli v novem uporabniškem vmesniku (Beta)"
+    "message": "Dobrodošli v nov UI (Beta)"
   },
   "uiWelcomeMessage": {
     "message": "Zdaj uporabljate novi MetaMask uporabniški vmesnik. Razglejte se, preizkusite nove funkcije, kot so pošiljanje žetonov, in nas obvestite, če imate kakšne težave."
diff --git a/app/_locales/zh_CN/messages.json b/app/_locales/zh_CN/messages.json
index 203ab1923..241ea948d 100644
--- a/app/_locales/zh_CN/messages.json
+++ b/app/_locales/zh_CN/messages.json
@@ -14,9 +14,15 @@
   "address": {
     "message": "地址"
   },
+  "addCustomToken": {
+    "message": "添加自定义代币"
+  },
   "addToken": {
     "message": "添加代币"
   },
+  "addTokens": {
+    "message": "添加代币"
+  },
   "amount": {
     "message": "数量"
   },
@@ -31,9 +37,15 @@
     "message": "MetaMask",
     "description": "The name of the application"
   },
+  "approved": {
+    "message": "批准"
+  },
   "attemptingConnect": {
     "message": "正在尝试连接区块链。"
   },
+  "attributions": {
+    "message": "来源"
+  },
   "available": {
     "message": "可用"
   },
@@ -43,6 +55,9 @@
   "balance": {
     "message": "余额："
   },
+  "balances": {
+    "message": "代币余额"
+  },
   "balanceIsInsufficientGas": {
     "message": "当前余额不足以支付 Gas"
   },
@@ -53,9 +68,15 @@
     "message": "必须大于等于 $1 并且小于等于 $2 。",
     "description": "helper for inputting hex as decimal input"
   },
+  "blockiesIdenticon": {
+    "message": "使用区块Identicon"
+  },
   "borrowDharma": {
     "message": "Borrow With Dharma (Beta)"
   },
+  "builtInCalifornia": {
+    "message": "MetaMask在加利福尼亚设计和制造。"
+  },
   "buy": {
     "message": "购买"
   },
@@ -65,15 +86,27 @@
   "buyCoinbaseExplainer": {
     "message": "Coinbase 是世界上最流行的买卖比特币，以太币和莱特币的交易所。"
   },
+  "ok": {
+    "message": "确认"
+  },
   "cancel": {
     "message": "取消"
   },
+  "classicInterface": {
+    "message": "使用经典接口"
+  },
   "clickCopy": {
     "message": "点击复制"
   },
+  "close": {
+    "message": "关闭"
+  },
   "confirm": {
     "message": "确认"
   },
+  "confirmed": {
+    "message": "确认"
+  },
   "confirmContract": {
     "message": "确认合约"
   },
@@ -83,6 +116,9 @@
   "confirmTransaction": {
     "message": "确认交易"
   },
+  "continue": {
+    "message": "继续"
+  },
   "continueToCoinbase": {
     "message": "继续访问 Coinbase"
   },
@@ -99,7 +135,10 @@
     "message": "已复制到剪贴板"
   },
   "copiedExclamation": {
-    "message": "已复制！"
+    "message": "已复制"
+  },
+  "copiedSafe": {
+    "message": "我已将它复制保存到某个安全的地方"
   },
   "copy": {
     "message": "复制"
@@ -126,15 +165,30 @@
     "message": "加密",
     "description": "Exchange type (cryptocurrencies)"
   },
+  "currentConversion": {
+    "message": "当前汇率"
+  },
+  "currentNetwork": {
+    "message": "当前网络"
+  },
   "customGas": {
     "message": "自定义 Gas"
   },
+  "customToken": {
+    "message": "自定义代币"
+  },
   "customize": {
     "message": "自定义"
   },
   "customRPC": {
     "message": "自定义 RPC"
   },
+  "decimalsMustZerotoTen": {
+    "message": "小数位最小为0并且不超过36位."
+  },
+  "decimal": {
+    "message": "精确小数点"
+  },
   "defaultNetwork": {
     "message": "默认以太坊交易网络为主网。"
   },
@@ -184,18 +238,39 @@
   "done": {
     "message": "完成"
   },
+  "downloadStateLogs": {
+    "message": "下载日志"
+  },
+  "dropped": {
+    "message": "丢弃"
+  },
   "edit": {
     "message": "编辑"
   },
   "editAccountName": {
     "message": "编辑账户名称"
   },
+  "emailUs": {
+    "message": "联系我们"
+  },
   "encryptNewDen": {
     "message": "加密你的新 DEN"
   },
   "enterPassword": {
     "message": "请输入密码"
   },
+  "enterPasswordConfirm": {
+    "message": "请输入密码以确认"
+  },
+  "enterPasswordContinue": {
+    "message": "请输入密码以继续"
+  },
+  "passwordNotLongEnough": {
+    "message": "密码长度不足"
+  },
+  "passwordsDontMatch": {
+    "message": "密码不匹配"
+  },
   "etherscanView": {
     "message": "在 Etherscan 上查看账户"
   },
@@ -219,9 +294,15 @@
     "message": "文件导入失败？ 点击这里！",
     "description": "Helps user import their account from a JSON file"
   },
+  "followTwitter": {
+    "message": "关注我们的Twitter"
+  },
   "from": {
     "message": "来自"
   },
+  "fromToSame": {
+    "message": "发送和接受地址不能相同"
+  },
   "fromShapeShift": {
     "message": "来自 ShapeShift"
   },
@@ -244,6 +325,9 @@
   "gasLimitTooLow": {
     "message": "Gas Limit 至少要 21000"
   },
+  "generatingSeed": {
+    "message": "生成密钥中..."
+  },
   "gasPrice": {
     "message": "Gas Price (GWEI)"
   },
@@ -253,6 +337,9 @@
   "gasPriceRequired": {
     "message": "Gas Price 必填"
   },
+  "generatingTransaction": {
+    "message": "生成 交易"
+  },
   "getEther": {
     "message": "获取 Ether"
   },
@@ -268,6 +355,9 @@
     "message": "这里",
     "description": "as in -click here- for more information (goes with troubleTokenBalances)"
   },
+  "hereList": {
+    "message": "Here's a list!!!!"
+  },
   "hide": {
     "message": "隐藏"
   },
@@ -280,6 +370,9 @@
   "howToDeposit": {
     "message": "你想怎样转入 Ether？"
   },
+  "holdEther": {
+    "message": "它允许你保存ether和代币，并作为你使用Dapp的桥梁."
+  },
   "import": {
     "message": "导入",
     "description": "Button to import an account from a selected file"
@@ -287,6 +380,9 @@
   "importAccount": {
     "message": "导入账户"
   },
+  "importAccountMsg": {
+    "message":" Imported accounts will not be associated with your originally created MetaMask account seedphrase. Learn more about imported accounts "
+  },
   "importAnAccount": {
     "message": "导入一个账户"
   },
@@ -294,46 +390,82 @@
     "message": "导入存在的 DEN"
   },
   "imported": {
-    "message": "已导入私钥",
+    "message": "已导入",
     "description": "status showing that an account has been fully loaded into the keyring"
   },
   "infoHelp": {
     "message": "信息 & 帮助"
   },
+  "insufficientFunds": {
+    "message": "余额不足."
+  },
+  "insufficientTokens": {
+    "message": "代币余额不足."
+  },
   "invalidAddress": {
-    "message": "错误的地址"
+    "message": "无效地址"
+  },
+  "invalidAddressRecipient": {
+    "message": "收款地址不合法"
   },
   "invalidGasParams": {
-    "message": "错误的 Gas 参数"
+    "message": "无效 Gas 参数"
   },
   "invalidInput": {
-    "message": "错误的输入。"
+    "message": "无效输入."
   },
   "invalidRequest": {
     "message": "无效请求"
   },
+  "invalidRPC": {
+    "message": "无效 RPC URI"
+  },
+  "jsonFail": {
+    "message": "Something went wrong. Please make sure your JSON file is properly formatted."
+  },
   "jsonFile": {
     "message": "JSON 文件",
     "description": "format for importing an account"
   },
+  "keepTrackTokens": {
+    "message": "Keep track of the tokens you’ve bought with your MetaMask account."
+  },
   "kovan": {
     "message": "Kovan 测试网络"
   },
+  "knowledgeDataBase": {
+    "message": "浏览我们的知识库"
+  },
+  "max": {
+    "message": "最大"
+  },
+  "learnMore": {
+    "message": "查看更多."
+  },
   "lessThanMax": {
-    "message": "必须小于等于 $1.",
+    "message": "必须小于或等于 $1.",
     "description": "helper for inputting hex as decimal input"
   },
+  "likeToAddTokens": {
+    "message": "你想添加这些代币吗？"
+  },
+  "links": {
+    "message": "链接"
+  },
   "limit": {
-    "message": "限定"
+    "message": "限制"
   },
   "loading": {
-    "message": "加载..."
+    "message": "加载中..."
   },
   "loadingTokens": {
-    "message": "加载代币..."
+    "message": "加载代币中..."
   },
   "localhost": {
-    "message": "本地主机 8545"
+    "message": "Localhost 8545"
+  },
+  "login": {
+    "message": "登录"
   },
   "logout": {
     "message": "登出"
@@ -341,17 +473,29 @@
   "loose": {
     "message": "疏松"
   },
+  "loweCaseWords": {
+    "message": "助记词只有小写字符"
+  },
   "mainnet": {
     "message": "以太坊主网络"
   },
   "message": {
     "message": "消息"
   },
+  "metamaskDescription": {
+    "message": "MetaMask is a secure identity vault for Ethereum."
+  },
+  "metamaskSeedWords": {
+    "message": "MetaMask 助记词"
+  },
   "min": {
     "message": "最小"
   },
   "myAccounts": {
-    "message": "我的账户"
+    "message": "My Accounts"
+  },
+  "mustSelectOne": {
+    "message": "至少选择一种代币."
   },
   "needEtherInWallet": {
     "message": "使用 MetaMask 与 DAPP 交互，需要你的钱包里有 Ether。"
@@ -361,9 +505,12 @@
     "description": "User is important an account and needs to add a file to continue"
   },
   "needImportPassword": {
-    "message": "必须为已选择的文件输入密码。",
+   "message": "必须为已选择的文件输入密码。",
     "description": "Password and file needed to import an account"
   },
+  "negativeETH": {
+    "message": "Can not send negative amounts of ETH."
+  },
   "networks": {
     "message": "网络"
   },
@@ -383,8 +530,11 @@
   "newRecipient": {
     "message": "新收款人"
   },
+  "newRPC": {
+    "message": "新 RPC URL"
+  },
   "next": {
-    "message": "下一个"
+    "message": "下一步"
   },
   "noAddressForName": {
     "message": "此 ENS 名字还没有指定地址。"
@@ -405,12 +555,18 @@
     "message": "旧版界面"
   },
   "oldUIMessage": {
-    "message": "你已经切换到旧版界面。 你可以通过右上方下拉菜单中的选项切换回新的用户界面。"
+     "message": "你已经切换到旧版界面。 你可以通过右上方下拉菜单中的选项切换回新的用户界面。"
   },
   "or": {
     "message": "或",
     "description": "choice between creating or importing a new account"
   },
+  "password": {
+    "message": "密码"
+  },
+  "passwordCorrect": {
+    "message": "Please make sure your password is correct."
+  },
   "passwordMismatch": {
     "message": "密码不匹配",
     "description": "in password creation process, the two new password fields did not match"
@@ -426,15 +582,24 @@
   "pasteSeed": {
     "message": "请粘贴你的助记词！"
   },
+  "personalAddressDetected": {
+    "message": "检测到个人地址。请输入代币合约地址。"
+  },
   "pleaseReviewTransaction": {
     "message": "请检查你的交易。"
   },
+  "popularTokens": {
+    "message": "常用代币"
+  },
+  "privacyMsg": {
+    "message": "隐私政策"
+  },
   "privateKey": {
     "message": "私钥",
     "description": "select this type of file to use to import an account"
   },
   "privateKeyWarning": {
-    "message": "注意：永远不要公开这个私钥。任何拥有你的私钥的人都可以窃取你帐户中的任何资产。"
+     "message": "注意：永远不要公开这个私钥。任何拥有你的私钥的人都可以窃取你帐户中的任何资产。"
   },
   "privateNetwork": {
     "message": "私有网络"
@@ -443,11 +608,14 @@
     "message": "显示二维码"
   },
   "readdToken": {
-    "message": "之后你还可以通过帐户选项菜单中的“添加代币”来添加此代币。"
+     "message": "之后你还可以通过帐户选项菜单中的“添加代币”来添加此代币。"
   },
   "readMore": {
     "message": "了解更多。"
   },
+  "readMore2": {
+    "message": "了解更多。"
+  },
   "receive": {
     "message": "接收"
   },
@@ -460,12 +628,39 @@
   "rejected": {
     "message": "拒绝"
   },
+  "resetAccount": {
+    "message": "重设账户"
+  },
+  "restoreFromSeed": {
+    "message": "从助记词还原"
+  },
+  "restoreVault": {
+    "message": "还原保险柜"
+  },
   "required": {
     "message": "必填"
   },
   "retryWithMoreGas": {
     "message": "使用更高的 Gas Price 重试"
   },
+  "walletSeed": {
+    "message": "钱包助记词"
+  },
+  "revealSeedWords": {
+    "message": "显示助记词"
+  },
+  "revealSeedWordsTitle": {
+    "message": "助记词"
+  },
+  "revealSeedWordsDescription": {
+    "message": "如果您更换浏览器或计算机，则需要使用此助记词访问您的帐户。请将它们保存在安全秘密的地方。"
+  },
+  "revealSeedWordsWarningTitle": {
+    "message": "不要对任何人展示助记词！"
+  },
+  "revealSeedWordsWarning": {
+    "message": "助记词可以用来窃取您的所有帐户."
+  },
   "revert": {
     "message": "还原"
   },
@@ -475,6 +670,24 @@
   "ropsten": {
     "message": "Ropsten 测试网络"
   },
+  "currentRpc": {
+    "message": "当前 RPC"
+  },
+  "connectingToMainnet": {
+    "message": "正在连接到以太坊主网"
+  },
+  "connectingToRopsten": {
+    "message": "正在连接到Ropsten测试网络"
+  },
+  "connectingToKovan": {
+    "message": "正在连接到Kovan测试网络"
+  },
+  "connectingToRinkeby": {
+    "message": "正在连接到Rinkeby测试网络"
+  },
+  "connectingToUnknown": {
+    "message": "正在连接到未知网络"
+  },
   "sampleAccountName": {
     "message": "例如：我的账户",
     "description": "Help user understand concept of adding a human-readable name to their account"
@@ -482,25 +695,70 @@
   "save": {
     "message": "保存"
   },
+  "reprice_title": {
+    "message": "重新出价交易"
+  },
+  "reprice_subtitle": {
+    "message": "提高 GAS 价格尝试覆盖并加速交易"
+  },
+  "saveAsCsvFile": {
+    "message": "另存为CSV文件"
+  },
   "saveAsFile": {
     "message": "保存文件",
     "description": "Account export process"
   },
+  "saveSeedAsFile": {
+    "message": "保存助记词为文件"
+  },
+  "search": {
+    "message": "搜索"
+  },
+  "secretPhrase": {
+    "message": "输入12位助记词以恢复金库."
+  },
+  "newPassword8Chars": {
+    "message": "新密码（至少8位)"
+  },
+  "seedPhraseReq": {
+    "message": "助记词为12个单词"
+  },
+  "select": {
+    "message": "选择"
+  },
+  "selectCurrency": {
+    "message": "选择货币"
+  },
   "selectService": {
     "message": "选择服务"
   },
+  "selectType": {
+    "message": "选择类型"
+  },
   "send": {
     "message": "发送"
   },
+  "sendETH": {
+    "message": "发送 ETH"
+  },
   "sendTokens": {
-    "message": "发送代币"
+    "message": "发送 代币"
+  },
+  "onlySendToEtherAddress": {
+    "message": "只发送 ETH 给一个以太坊地址"
+  },
+  "searchTokens": {
+    "message": "搜索代币"
   },
   "sendTokensAnywhere": {
-    "message": "发送代币给拥有以太坊账户的任何人"
+    "message": "将代币发送给拥有以太坊地址的任何人"
   },
   "settings": {
     "message": "设置"
   },
+  "info": {
+  "message": "信息"
+  },
   "shapeshiftBuy": {
     "message": "使用 Shapeshift 购买"
   },
@@ -513,6 +771,9 @@
   "sign": {
     "message": "签名"
   },
+  "signed": {
+    "message": "已签名"
+  },
   "signMessage": {
     "message": "签署消息"
   },
@@ -525,15 +786,39 @@
   "sigRequested": {
     "message": "签名已请求"
   },
+  "spaceBetween": {
+    "message": "单词之间只能有一个空格"
+  },
   "status": {
     "message": "状态"
   },
+  "stateLogs": {
+    "message": "状态日志"
+  },
+  "stateLogsDescription": {
+    "message": "状态日志包含您的账户地址和已发送的交易。"
+  },
+  "stateLogError": {
+    "message": "检索状态日志时出错。"
+  },
   "submit": {
     "message": "提交"
   },
+  "submitted": {
+    "message": "已提交"
+  },
+  "supportCenter": {
+    "message": "访问我们的支持中心"
+  },
+  "symbolBetweenZeroTen": {
+    "message": "符号应该有0-10个字符."
+  },
   "takesTooLong": {
     "message": "花费太长时间？"
   },
+  "terms": {
+    "message": "使用条款"
+  },
   "testFaucet": {
     "message": "测试水管"
   },
@@ -544,33 +829,60 @@
     "message": "$1 ETH 通过 ShapeShift",
     "description": "system will fill in deposit type in start of message"
   },
+  "tokenAddress": {
+    "message": "代币地址"
+  },
+  "tokenAlreadyAdded": {
+    "message": "代币已经被添加."
+  },
   "tokenBalance": {
     "message": "代币余额："
   },
+  "tokenSelection": {
+    "message": "搜索代币或从我们的常用代币列表中进行选择"
+  },
+  "tokenSymbol": {
+    "message": "代币符号"
+  },
+  "tokenWarning1": {
+    "message": "Keep track of the tokens you’ve bought with your MetaMask account. If you bought tokens using a different account, those tokens will not appear here."
+  },
   "total": {
     "message": "总量"
   },
+  "transactions": {
+    "message": "交易"
+  },
+  "transactionError": {
+    "message": "交易出错. 合约代码执行异常."
+  },
   "transactionMemo": {
-    "message": "交易备注 （可选）"
+    "message": "交易备注(可选)"
   },
   "transactionNumber": {
-    "message": "交易号"
+    "message": "交易 number"
   },
   "transfers": {
-    "message": "Transfers"
+    "message": "交易"
   },
   "troubleTokenBalances": {
-    "message": "无法加载代币余额。你可以再这里查看 ",
+    "message": "我们无法加载您的代币余额。你可以查看它们",
     "description": "Followed by a link (here) to view token balances"
   },
+  "twelveWords": {
+    "message": "这12个单词是恢复MetaMask帐户的唯一方法。.\n将它们存放在安全和秘密的地方。."
+  },
   "typePassword": {
-    "message": "请输入密码"
+    "message": "输入你的密码"
   },
   "uiWelcome": {
     "message": "欢迎使用新版界面 （Beta）"
   },
   "uiWelcomeMessage": {
-    "message": "你现在正在使用新的 Metamask 界面。 尝试发送代币等新功能，有任何问题请告知我们。"
+      "message": "你现在正在使用新的 Metamask 界面。 尝试发送代币等新功能，有任何问题请告知我们。"
+  },
+  "unapproved": {
+    "message": "未批准"
   },
   "unavailable": {
     "message": "不可用"
@@ -582,7 +894,10 @@
     "message": "未知私有网络"
   },
   "unknownNetworkId": {
-    "message": "未知网络 ID"
+    "message": "未知网络ID"
+  },
+  "uriErrorMsg": {
+    "message": "URIs require the appropriate HTTP/HTTPS prefix."
   },
   "usaOnly": {
     "message": "只限于美国",
@@ -591,12 +906,27 @@
   "usedByClients": {
     "message": "可用于各种不同的客户端"
   },
+  "useOldUI": {
+    "message": "使用旧版 UI"
+  },
+  "validFileImport": {
+    "message": "您必须选择一个有效的文件进行导入."
+  },
+  "vaultCreated": {
+    "message": "已创建保险库"
+  },
   "viewAccount": {
     "message": "查看账户"
   },
+  "visitWebSite": {
+    "message": "访问我们的网站"
+  },
   "warning": {
     "message": "警告"
   },
+  "welcomeBeta": {
+    "message": "欢迎使用 MetaMask 测试版"
+  },
   "whatsThis": {
     "message": "这是什么？"
   },
@@ -605,5 +935,8 @@
   },
   "youSign": {
     "message": "正在签名"
+  },
+  "yourPrivateSeedPhrase": {
+    "message": "你的私有助记词"
   }
 }
diff --git a/app/scripts/contentscript.js b/app/scripts/contentscript.js
index dbf1c6d4c..ddf1a9432 100644
--- a/app/scripts/contentscript.js
+++ b/app/scripts/contentscript.js
@@ -174,6 +174,7 @@ function blacklistedDomainCheck () {
     'uscourts.gov',
     'dropbox.com',
     'webbyawards.com',
+    'cdn.shopify.com/s/javascripts/tricorder/xtld-read-only-frame.html',
   ]
   var currentUrl = window.location.href
   var currentRegex
diff --git a/app/scripts/controllers/transactions/index.js b/app/scripts/controllers/transactions/index.js
index 541f1db73..3886db104 100644
--- a/app/scripts/controllers/transactions/index.js
+++ b/app/scripts/controllers/transactions/index.js
@@ -112,6 +112,21 @@ class TransactionController extends EventEmitter {
   }
 
   /**
+    Check if a txMeta in the list with the same nonce has been confirmed in a block
+    if the txParams dont have a nonce will return false
+    @returns {boolean} whether the nonce has been used in a transaction confirmed in a block
+    @param {object} txMeta - the txMeta object
+  */
+  async isNonceTaken (txMeta) {
+    const { from, nonce } = txMeta.txParams
+    if ('nonce' in txMeta.txParams) {
+      const sameNonceTxList = this.txStateManager.getFilteredTxList({from, nonce, status: 'confirmed'})
+      return (sameNonceTxList.length >= 1)
+    }
+    return false
+  }
+
+  /**
   add a new unapproved transaction to the pipeline
 
   @returns {Promise<string>} the hash of the transaction after being submitted to the network
diff --git a/app/scripts/controllers/transactions/tx-state-manager.js b/app/scripts/controllers/transactions/tx-state-manager.js
index 53428c333..380214c1d 100644
--- a/app/scripts/controllers/transactions/tx-state-manager.js
+++ b/app/scripts/controllers/transactions/tx-state-manager.js
@@ -262,7 +262,7 @@ class TransactionStateManager extends EventEmitter {
   */
   getTxsByMetaData (key, value, txList = this.getTxList()) {
     return txList.filter((txMeta) => {
-      if (txMeta.txParams[key]) {
+      if (key in txMeta.txParams) {
         return txMeta.txParams[key] === value
       } else {
         return txMeta[key] === value
diff --git a/app/scripts/metamask-controller.js b/app/scripts/metamask-controller.js
index 67d257fea..a6b5d3453 100644
--- a/app/scripts/metamask-controller.js
+++ b/app/scripts/metamask-controller.js
@@ -381,6 +381,7 @@ module.exports = class MetamaskController extends EventEmitter {
       updateTransaction: nodeify(txController.updateTransaction, txController),
       updateAndApproveTransaction: nodeify(txController.updateAndApproveTransaction, txController),
       retryTransaction: nodeify(this.retryTransaction, this),
+      isNonceTaken: nodeify(txController.isNonceTaken, txController),
 
       // messageManager
       signMessage: nodeify(this.signMessage, this),