我遇到基于Chromium的浏览器和CORS请求的问题 包括302重定向。更具体地说，我遇到了Chromium的问题 版本34-42包括在内; 43及以后的作品，似乎33及更早 版本也运行良好（我没有测试过去33,28工作过。）
我的XHR请求使用withCredentials = true，因此Access-Control-Allow-Origin =“*” 不被允许;服务器必须使用Access-Control-Allow-Origin进行回复 回传传入请求的Origin标头的标题。
收到第一个302后，Chromium 43及以后发送“Origin：null”为 重定向请求的一部分，并接受'Access-Control-Allow-Origin：null“ 作为回应（与Firefox一样）。
Chromium系列34-42都将主机名称作为Origin发送给所有请求， 此时的几个问题表明CORS重定向仅 Access-Control-Allow-Origin支持设置为“*”，以及“原始版本” XHR不能将allow-credentials设置为true“，例如：
我希望这是一种误解，并且有一些应用程序 开发人员我可以在客户端和/或服务器上强制执行这些版本 不取消重定向或失败的想法，以解决变通方法。
版本33＆amp;之前为每个请求发送了整个主机名，并且已满 往返工程。
解决方法的一种可能性我一直在尝试使用 事实上，对于跨域，我实际上不需要withCredentials = true 请求，我只需要它重定向回原始主机进行交换 access_token的基于cookie的身份验证，但我无法找到方法 除非是，否则让客户端在跟随302自身时发送cookie 也发送了原始的跨域请求。
为了说明，以下是chrome：// net-internals /＃events log的摘录 使用Chrome 43的成功请求：
[img src]
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg?timestamp=1437075435614 HTTP/1.1
Host: media-qa.example.com
Origin: https://qa-app.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1568 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, X-Requested-With
Access-Control-Allow-Origin: https://qa-app.example.com
Content-Type: text/html; charset=utf-8
Location: https://qa-app.example.com/oauth/authorize/?request_uri=https%3A//media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg%3Ftimestamp%3D1437075435614
[get cross-domain access token]
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /oauth/authorize/?request_uri=https%3A//media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg%3Ftimestamp%3D1437075435614 HTTP/1.1
Host: qa-app.example.com
Origin: null
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1762 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: Content-Type, X-HTTP-Method-Override, X-Requested-With
Access-Control-Allow-Origin: null
Content-Type: text/html; charset=utf-8
Location: https://media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?timestamp=1437075435614&access_token=L221i4rC5R8NY2AbP4lIxo7apr6HlIHttKroKkQi3tzUSaL7NE7aoBcLUI432Mast8b/NH7ksFfRhsCOhK7P86Lc4C9GlkRn%2Bze/UBJeG8gbRVlnxdjdzBFfp9kAbYR9onDM9b1bUdRaV1q19it8OL3aBzThrmng1E%2BMmT%2BVyK0qXLqQ6yA/tHfrgyC9XwFbKqW6BQSpLOyVOPHZZ4t3dgzimTD9HJCbLUUjZt7nf7iCAOBcaR9CiUH8vlcP4wkOmXk3AoDslYu6IUZtRHrSs7OplBtTXgmzBlSaum%2BccFzdNu5TuH%2BQkmp2QQHErwRJkUNN9S5ZcRzlXdUGg8%2B698Wh5zYFVa%2B/pEfykkf%2BAuqKjbVicGq%2BgxCYOCuqe4YJU/GPMHsBC6gvVYFmtkDaG4za1N4fvbmBb9u%2BHHZNdW0kvj55N9QgJ86lHZjddvfEivET0TVTo1u0u6Wp/TM4EMXLtMK3urBpEAMWBT9PlE8%3D
[url redirection service adds cloudfront signature]
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?timestamp=1437075435614&access_token=L221i4rC5R8NY2AbP4lIxo7apr6HlIHttKroKkQi3tzUSaL7NE7aoBcLUI432Mast8b/NH7ksFfRhsCOhK7P86Lc4C9GlkRn%2Bze/UBJeG8gbRVlnxdjdzBFfp9kAbYR9onDM9b1bUdRaV1q19it8OL3aBzThrmng1E%2BMmT%2BVyK0qXLqQ6yA/tHfrgyC9XwFbKqW6BQSpLOyVOPHZZ4t3dgzimTD9HJCbLUUjZt7nf7iCAOBcaR9CiUH8vlcP4wkOmXk3AoDslYu6IUZtRHrSs7OplBtTXgmzBlSaum%2BccFzdNu5TuH%2BQkmp2QQHErwRJkUNN9S5ZcRzlXdUGg8%2B698Wh5zYFVa%2B/pEfykkf%2BAuqKjbVicGq%2BgxCYOCuqe4YJU/GPMHsBC6gvVYFmtkDaG4za1N4fvbmBb9u%2BHHZNdW0kvj55N9QgJ86lHZjddvfEivET0TVTo1u0u6Wp/TM4EMXLtMK3urBpEAMWBT9PlE8%3D HTTP/1.1
Host: media-qa.example.com
Origin: null
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1568 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, X-Requested-With
Access-Control-Allow-Origin: null
Content-Type: text/html; charset=utf-8
Location: https://gbbrsh.cloudfront.net/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?Expires=1437075499&Signature=RpCVix5lcF5~Arah0WxhSoB3SN7ZfxXIwnaL8EOdlslIz5c9Ycic1wF~sjwTnWD5fxS~SBhexIz37oqjHjED3MTPiXAmuPjO1mQ-V8ACc8N-geWBIvMQRw9kCjCRmtquSs7TynaFqopv0BpQKH2G1xVdfoDaOZZWso7pXnpR50c2NdyDD-WMZNLKJ657Dj4-wCL8ZJdUPOgiXsfcxM1AZGy5P034SCL8JB8ZyEh1bUDszLkQa8lIpsy08mt9t8ZjFcR2i6bqBZNZOquT3jbOEy8VprL4lmtyOmVJaNTaBevZC6rQ6CM~jd~Ya2FockK5bNGYxM043OU71NExS0lHTg__&Key-Pair-Id=APKAJNUAAHKHVOSPPXTQ
Set-Cookie: [349 bytes were stripped]
[finally, get cloudfront image]
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?Expires=1437075499&Signature=RpCVix5lcF5~Arah0WxhSoB3SN7ZfxXIwnaL8EOdlslIz5c9Ycic1wF~sjwTnWD5fxS~SBhexIz37oqjHjED3MTPiXAmuPjO1mQ-V8ACc8N-geWBIvMQRw9kCjCRmtquSs7TynaFqopv0BpQKH2G1xVdfoDaOZZWso7pXnpR50c2NdyDD-WMZNLKJ657Dj4-wCL8ZJdUPOgiXsfcxM1AZGy5P034SCL8JB8ZyEh1bUDszLkQa8lIpsy08mt9t8ZjFcR2i6bqBZNZOquT3jbOEy8VprL4lmtyOmVJaNTaBevZC6rQ6CM~jd~Ya2FockK5bNGYxM043OU71NExS0lHTg__&Key-Pair-Id=APKAJNUAAHKHVOSPPXTQ HTTP/1.1
Host: gbbrsh.cloudfront.net
Origin: null
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/43.0.2357.65 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 200 OK
Content-Length: 48776
Access-Control-Allow-Origin: null
Access-Control-Allow-Methods: GET
Access-Control-Max-Age: 3000
Access-Control-Allow-Credentials: true
Vary: Origin
这是使用版本42的不成功日志，请注意所有重定向 使用上面的43发送“Origin：null”，但42发送主机名（其中 服务器回复），客户端取消请求：
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg?timestamp=1437074740624 HTTP/1.1
Host: media-qa.example.com
Origin: https://qa-app.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1571 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, X-Requested-With
Access-Control-Allow-Origin: https://qa-app.example.com
Location: https://qa-app.example.com/oauth/authorize/?request_uri=https%3A//media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg%3Ftimestamp%3D1437074740624
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /oauth/authorize/?request_uri=https%3A//media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg%3Ftimestamp%3D1437074740624 HTTP/1.1
Host: qa-app.example.com
Origin: https://qa-app.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1769 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: Content-Type, X-HTTP-Method-Override, X-Requested-With
Access-Control-Allow-Origin: https://qa-app.example.com
Location: https://media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?timestamp=1437074740624&access_token=JbXemck/weq2TjoVtgwuXDZB1GgmBqlDix3z5WfsWFlf2aZVmCud99wtAU%2BBErVxm6Lk1MRP1ubM/bf59URPs9uXMLYC%2Bnk6lAYQRUBhO3UmBnZk967W/5f9/1YnfRHQe1Y9fGRSkddQJdzdOwkMAvYSCw%2BN1ofkrb4tYKz9OWja1WRuim82Mt5uzdb5eXVLUnlCCgqt9LjN6yDHPm7UjMwQMG8V0kFPIkL4ZGb/5WfXXa2NJY1Qq3GbFGFQID49vw/XDP6B9q9kRIL4D/NuLUocRUvw5iHZciqygpnJl1GaRcVr%2B5%2BBbKBw3c0Gou4X/ojiewnds2pYPPxNGKploy88l4GcjpGw%2BXmDiP4wUgCojhRporBjp2y87AnaY1k6BSI1j9xHxiSnjXT7pMsyXpBfMYCoAwV/w1Fh1E/Tu1ygXJhaOHAx%2B19BxOIYPWFJVw3djggbkN1jRo%2Bde%2BolGjfEXtFarwfx4nyCeNyYAd0%3D
Vary: Accept-Encoding
URL_REQUEST_DELEGATE [dt=0]
+URL_REQUEST_DELEGATE [dt=3]
DELEGATE_INFO [dt=3]
--> delegate_info = "AsyncResourceHandler"
-URL_REQUEST_DELEGATE
CANCELLED
正如我所提到的，如果你回到版本33，它即使是客户端也能正常工作 正在所有请求的Origin标头中发送主机名：
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg?timestamp=1437076851710 HTTP/1.1
Host: media-qa.example.com
Origin: https://qa-app.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1550 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, X-Requested-With
Access-Control-Allow-Origin: https://qa-app.example.com
Location: https://qa-app.example.com/oauth/authorize/?request_uri=https%3A//media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg%3Ftimestamp%3D1437076851710
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /oauth/authorize/?request_uri=https%3A//media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ%3D%3D.jpg%3Ftimestamp%3D1437076851710 HTTP/1.1
Host: qa-app.example.com
Origin: https://qa-app.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1763 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: Content-Type, X-HTTP-Method-Override, X-Requested-With
Access-Control-Allow-Origin: https://qa-app.example.com
Location: https://media-qa.example.com/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?timestamp=1437076851710&access_token=C30mMVgoZSZtkpm3vgMNfLZEpkKT//%2BiZK5gbR39dvPfIaezfjNMocXJ0UCCH10jcE0yvOIrT8yISHerVvGZlGPy2rr2YwXkh1IsYcl0uNGYOP2bDYyz1cJNAwnRYZ4qS0uctDQiKNGZi3oC10TdIwzhz8aaOFAosRFEjPqrT553aXjpZr2SE4Z73TtU2pd%2B7ILICARbjp0r9yhDAAauJgQHkBAkcLVvW5TARQBeRR1OtXbf0CjN764EZ/2GEqCRhvo0rtVUQGUVpt/Sur9yFYUh1b/rFOZJ0o/Oj8rEUEg2c8p/O1ZrpN8emKMB%2BVWLXG97DPO6QpQmzGvaYCZsUDwGfvPNJ8wCtXEdQF0RzQMv3HG71StD9lK30BB46sDTuP24w7tH4PxqjY0cWBUpaMMz/mKLWuSWY6lerx7ibB7Gp%2B9OsclEHeaxKwFr%2BD63RFPmTwBtHKOF/PjIo%2BbmoxJZ07eJYAEYXDtfoLmFvM8%3D
Vary: Accept-Encoding
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?timestamp=1437076851710&access_token=C30mMVgoZSZtkpm3vgMNfLZEpkKT//%2BiZK5gbR39dvPfIaezfjNMocXJ0UCCH10jcE0yvOIrT8yISHerVvGZlGPy2rr2YwXkh1IsYcl0uNGYOP2bDYyz1cJNAwnRYZ4qS0uctDQiKNGZi3oC10TdIwzhz8aaOFAosRFEjPqrT553aXjpZr2SE4Z73TtU2pd%2B7ILICARbjp0r9yhDAAauJgQHkBAkcLVvW5TARQBeRR1OtXbf0CjN764EZ/2GEqCRhvo0rtVUQGUVpt/Sur9yFYUh1b/rFOZJ0o/Oj8rEUEg2c8p/O1ZrpN8emKMB%2BVWLXG97DPO6QpQmzGvaYCZsUDwGfvPNJ8wCtXEdQF0RzQMv3HG71StD9lK30BB46sDTuP24w7tH4PxqjY0cWBUpaMMz/mKLWuSWY6lerx7ibB7Gp%2B9OsclEHeaxKwFr%2BD63RFPmTwBtHKOF/PjIo%2BbmoxJZ07eJYAEYXDtfoLmFvM8%3D HTTP/1.1
Host: media-qa.example.com
Origin: https://qa-app.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
Cookie: [1550 bytes were stripped]
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 302 FOUND
Access-Control-Allow-Credentials: true
Access-Control-Allow-Headers: X-HTTP-Method-Override, Content-Type, X-Requested-With
Access-Control-Allow-Origin: https://qa-app.example.com
Location: https://gbbrsh.cloudfront.net/media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?Expires=1437076916&Signature=WBDGSQXer-zAREYgiD1~DA8pUaNUBha4WrUFt-WI5Soh4Z-5ayw35UocOG7DuC9FOnAQAeU5Nvp8hKdofDB--ic4aMH0e~LmHaJ38GtP-lHnyyfQDpjJOEmGM2GY3sB0KG7qa8~eTXX9jKDJTCG9Hkf0EpievuWwiXEKGYaSbe0tkR4CLyhND3sIDJbFGCQQZ7NmhMB-3vOsqDKYKKz9SebuiqO0qbL8SvqBkMEiufXCF2MriR4hVDEjFQssE3ysBbhiMlkaINAeOkEmiZEAjnhB-ncN31Lvy4Lo1LxiyCqKH9QwPOpa6ukK0WrYXWwiTi2VRAaxSjm-xgbGiIArmA__&Key-Pair-Id=APKAJNUAAHKHVOSPPXTQ
HTTP_TRANSACTION_SEND_REQUEST_HEADERS
--> GET /media/uploads/bucket/a746a337-5c20-46a6-a1fc-701e772970fd-bWFpbi1uLW4tMC0wLTAtNDUwLTQ0NQ==.jpg?Expires=1437076916&Signature=WBDGSQXer-zAREYgiD1~DA8pUaNUBha4WrUFt-WI5Soh4Z-5ayw35UocOG7DuC9FOnAQAeU5Nvp8hKdofDB--ic4aMH0e~LmHaJ38GtP-lHnyyfQDpjJOEmGM2GY3sB0KG7qa8~eTXX9jKDJTCG9Hkf0EpievuWwiXEKGYaSbe0tkR4CLyhND3sIDJbFGCQQZ7NmhMB-3vOsqDKYKKz9SebuiqO0qbL8SvqBkMEiufXCF2MriR4hVDEjFQssE3ysBbhiMlkaINAeOkEmiZEAjnhB-ncN31Lvy4Lo1LxiyCqKH9QwPOpa6ukK0WrYXWwiTi2VRAaxSjm-xgbGiIArmA__&Key-Pair-Id=APKAJNUAAHKHVOSPPXTQ HTTP/1.1
Host: gbbrsh.cloudfront.net
Origin: https://qa-app.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.117 Safari/537.36
Referer: https://qa-app.example.com/media/photos/
HTTP_TRANSACTION_READ_RESPONSE_HEADERS
--> HTTP/1.1 200 OK
Access-Control-Allow-Origin: https://qa-app.example.com
Access-Control-Allow-Methods: GET
Access-Control-Max-Age: 3000
Access-Control-Allow-Credentials: true
Vary: Origin