为什么我在使用 Google GMail playground 时总是收到“400 invalid to header”响应？

Question

我花了两天时间尝试通过 Google OAuth playground 发送电子邮件，但没有成功。这是我要发送的原始消息：

To: "Stanley Smith" <stan.smith@yahoo.com>\r\nContent-type: text/html;charset=iso-8859-1\r\nMIME-Version: 1.0\r\nSubject: this would be the subject\r\n\r\nThis is the email sent by Stanley Smith

我对其进行 base64 编码（url-safe 编码），然后将编码后的字符串原样放入请求 body

{
    "raw": "VG86ICJTdGFubGV5IFNtaXRoIiA8c3Rhbi5zbWl0aEB5YWhvby5jb20+XHJcbkNvbnRlbnQtdHlwZTogdGV4dC9odG1sO2NoYXJzZXQ9aXNvLTg4NTktMVxyXG5NSU1FLVZlcnNpb246IDEuMFxyXG5TdWJqZWN0OiB0aGlzIHdvdWxkIGJlIHRoZSBzdWJqZWN0XHJcblxyXG5UaGlzIGlzIHRoZSBlbWFpbCBzZW50IGJ5IFN0YW5sZXkgU21pdGgK"
}

然后我点击发送请求，但我一直收到这个错误：

HTTP/1.1 400 Bad Request
Content-length: 188
X-xss-protection: 1; mode=block
X-content-type-options: nosniff
Expires: Fri, 16 Dec 2016 15:27:27 GMT
Vary: Origin,X-Origin
Server: GSE
Cache-control: private, max-age=0
Date: Fri, 16 Dec 2016 15:27:27 GMT
X-frame-options: SAMEORIGIN
Content-type: application/json; charset=UTF-8
{
  "error": {
    "code": 400, 
    "message": "Invalid to header", 
    "errors": [
      {
        "domain": "global", 
        "message": "Invalid to header", 
        "reason": "invalidArgument"
      }
    ]
  }
}

我遵循 RFC 2822，所以我不知道为什么会收到此错误。为什么会出现此错误？

Answer 1

我不完全确定为什么会出现此错误。如果您重新排列 headers 并将其编码为 base64 url-safe:

，它就会起作用

btoa(
  "From: \"Stanley Toles\" <stan.toles@yahoo.com>\r\n" +
  "To: \"Stanley Toles\" <stan.toles@yahoo.com>\r\n" +
  "Subject: this would be the subject\r\n" +
  "Content-type: text/html;charset=iso-8859-1\r\n\r\n" +

  "This is the email sent by Stanley Toles"
).replace(/\+/g, '-').replace(/\//g, '_').replace(/=+$/, '');

Answer 2

这个post对我帮助很大。感谢您提出问题 Rob。

最初，我在电子邮件中使用了以下代码：

let email = {message: "To: firstname lastname<someperson@gmail.com>  From: firstname 
lastname <someperson@gmail.com> Subject: Saying Hello  Date: Tue, 9 Nov 2018 17:20:06 
-0600 
Message-ID: <1234@local.machine.example>  This is a message just to say hello."}

阅读您的 post 后，我意识到我遗漏了 return 个字符。这是我在 javascript:

中使用 google gmail api 发送电子邮件的最终答案

function sendMessage(auth) {

    let email = {message: `To: "first last" <someperson@gmail.com>\r\nContent-type: 
    text/html;charset=iso-8859-1\r\nMIME-Version: 1.0\r\nSubject: this would be the 
    subject\r\n\r\nThis is the email sent by Stanley Toles`}

    let base64EncodedEmail = Base64.encodeURI(email.message);

    gmail.users.messages.send({'auth': auth, 'userId': 'me',  'resource': {
     "payload": {
      "headers": [
       {name: "To", value: "first last <somepersonsemail@gmail.com>"},
       {name: 'From', value: 'first last <somepersonsemail@gmail.com>'},
       {name: 'Subject', value: 'Saying Hello'}]
    },
    'raw': base64EncodedEmail,


    }},function(err,response){

    if(err) throw err;

    console.log(response);
   });
  }

为什么我在使用 Google GMail playground 时总是收到“400 invalid to header”响应？

Why do I keep getting a "400 invalid to header" response when using the Google GMail playground?

gmail

gmail-api