{"action":"created","issue":{"url":"https://api.github.com/repos/dotnet/corefx/issues/39887","repository_url":"https://api.github.com/repos/dotnet/corefx","labels_url":"https://api.github.com/repos/dotnet/corefx/issues/39887/labels{/name}","comments_url":"https://api.github.com/repos/dotnet/corefx/issues/39887/comments","events_url":"https://api.github.com/repos/dotnet/corefx/issues/39887/events","html_url":"https://github.com/dotnet/corefx/issues/39887","id":474575238,"node_id":"MDU6SXNzdWU0NzQ1NzUyMzg=","number":39887,"title":"WebClient http proxy broken in .Net Core 3 Preview 7","user":{"login":"roglainc","id":53478548,"node_id":"MDQ6VXNlcjUzNDc4NTQ4","avatar_url":"https://avatars3.githubusercontent.com/u/53478548?v=4","gravatar_id":"","url":"https://api.github.com/users/roglainc","html_url":"https://github.com/roglainc","followers_url":"https://api.github.com/users/roglainc/followers","following_url":"https://api.github.com/users/roglainc/following{/other_user}","gists_url":"https://api.github.com/users/roglainc/gists{/gist_id}","starred_url":"https://api.github.com/users/roglainc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/roglainc/subscriptions","organizations_url":"https://api.github.com/users/roglainc/orgs","repos_url":"https://api.github.com/users/roglainc/repos","events_url":"https://api.github.com/users/roglainc/events{/privacy}","received_events_url":"https://api.github.com/users/roglainc/received_events","type":"User","site_admin":false},"labels":[{"id":497898703,"node_id":"MDU6TGFiZWw0OTc4OTg3MDM=","url":"https://api.github.com/repos/dotnet/corefx/labels/area-System.Net.Http","name":"area-System.Net.Http","color":"d4c5f9","default":false},{"id":174911469,"node_id":"MDU6TGFiZWwxNzQ5MTE0Njk=","url":"https://api.github.com/repos/dotnet/corefx/labels/needs%20more%20info","name":"needs more info","color":"eb6420","default":false},{"id":181727851,"node_id":"MDU6TGFiZWwxODE3Mjc4NTE=","url":"https://api.github.com/repos/dotnet/corefx/labels/tenet-compatibility","name":"tenet-compatibility","color":"c2e0c6","default":false}],"state":"open","locked":false,"assignee":{"login":"davidsh","id":7684835,"node_id":"MDQ6VXNlcjc2ODQ4MzU=","avatar_url":"https://avatars0.githubusercontent.com/u/7684835?v=4","gravatar_id":"","url":"https://api.github.com/users/davidsh","html_url":"https://github.com/davidsh","followers_url":"https://api.github.com/users/davidsh/followers","following_url":"https://api.github.com/users/davidsh/following{/other_user}","gists_url":"https://api.github.com/users/davidsh/gists{/gist_id}","starred_url":"https://api.github.com/users/davidsh/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davidsh/subscriptions","organizations_url":"https://api.github.com/users/davidsh/orgs","repos_url":"https://api.github.com/users/davidsh/repos","events_url":"https://api.github.com/users/davidsh/events{/privacy}","received_events_url":"https://api.github.com/users/davidsh/received_events","type":"User","site_admin":false},"assignees":[{"login":"davidsh","id":7684835,"node_id":"MDQ6VXNlcjc2ODQ4MzU=","avatar_url":"https://avatars0.githubusercontent.com/u/7684835?v=4","gravatar_id":"","url":"https://api.github.com/users/davidsh","html_url":"https://github.com/davidsh","followers_url":"https://api.github.com/users/davidsh/followers","following_url":"https://api.github.com/users/davidsh/following{/other_user}","gists_url":"https://api.github.com/users/davidsh/gists{/gist_id}","starred_url":"https://api.github.com/users/davidsh/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davidsh/subscriptions","organizations_url":"https://api.github.com/users/davidsh/orgs","repos_url":"https://api.github.com/users/davidsh/repos","events_url":"https://api.github.com/users/davidsh/events{/privacy}","received_events_url":"https://api.github.com/users/davidsh/received_events","type":"User","site_admin":false}],"milestone":{"url":"https://api.github.com/repos/dotnet/corefx/milestones/21","html_url":"https://github.com/dotnet/corefx/milestone/21","labels_url":"https://api.github.com/repos/dotnet/corefx/milestones/21/labels","id":3242632,"node_id":"MDk6TWlsZXN0b25lMzI0MjYzMg==","number":21,"title":"3.0","description":".NET Core 3.0, next major release after 2.1. See [official release dates](https://github.com/dotnet/core/blob/master/roadmap.md) for details.\r\n\r\nWe will move important issues from Future to 3.0 as the priorities and dates for next release become more clear.","creator":{"login":"karelz","id":5776068,"node_id":"MDQ6VXNlcjU3NzYwNjg=","avatar_url":"https://avatars2.githubusercontent.com/u/5776068?v=4","gravatar_id":"","url":"https://api.github.com/users/karelz","html_url":"https://github.com/karelz","followers_url":"https://api.github.com/users/karelz/followers","following_url":"https://api.github.com/users/karelz/following{/other_user}","gists_url":"https://api.github.com/users/karelz/gists{/gist_id}","starred_url":"https://api.github.com/users/karelz/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/karelz/subscriptions","organizations_url":"https://api.github.com/users/karelz/orgs","repos_url":"https://api.github.com/users/karelz/repos","events_url":"https://api.github.com/users/karelz/events{/privacy}","received_events_url":"https://api.github.com/users/karelz/received_events","type":"User","site_admin":false},"open_issues":45,"closed_issues":9261,"state":"open","created_at":"2018-04-04T16:40:10Z","updated_at":"2019-07-31T19:49:13Z","due_on":"2019-09-30T07:00:00Z","closed_at":null},"comments":15,"created_at":"2019-07-30T13:09:15Z","updated_at":"2019-07-31T20:55:51Z","closed_at":null,"author_association":"NONE","body":"I am using WebClient and HttpWebRequest to call external Http APIs and is dependent on a proxy to make external calls. After upgrading to .Net Core Preview 7 I get Proxy authentication error (407). The code runs ok in .Net Core 2.1, and .Net Core 3 preview 3. \r\n\r\nThis is a snippet that \r\nsucceeds on .Net Core 2.1 & 3.0 preview 3 \r\nbut fails on preview 7, \r\nrunning in  Visual Studio 2019 16.2.0:\r\n\r\n            string proxy = <_name of Proxy_>;\r\n            string url = \"https://www.kemi.se/global/faktablad/faktablad-om-sakerhetsdatablad.pdf\";\r\n            var client = new WebClient() {\r\n                Proxy = new WebProxy(proxy, 8080) {\r\n                    UseDefaultCredentials = true\r\n                }\r\n            };\r\n            var data = client.DownloadData(url);\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/dotnet/corefx/issues/comments/517017586","html_url":"https://github.com/dotnet/corefx/issues/39887#issuecomment-517017586","issue_url":"https://api.github.com/repos/dotnet/corefx/issues/39887","id":517017586,"node_id":"MDEyOklzc3VlQ29tbWVudDUxNzAxNzU4Ng==","user":{"login":"roglainc","id":53478548,"node_id":"MDQ6VXNlcjUzNDc4NTQ4","avatar_url":"https://avatars3.githubusercontent.com/u/53478548?v=4","gravatar_id":"","url":"https://api.github.com/users/roglainc","html_url":"https://github.com/roglainc","followers_url":"https://api.github.com/users/roglainc/followers","following_url":"https://api.github.com/users/roglainc/following{/other_user}","gists_url":"https://api.github.com/users/roglainc/gists{/gist_id}","starred_url":"https://api.github.com/users/roglainc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/roglainc/subscriptions","organizations_url":"https://api.github.com/users/roglainc/orgs","repos_url":"https://api.github.com/users/roglainc/repos","events_url":"https://api.github.com/users/roglainc/events{/privacy}","received_events_url":"https://api.github.com/users/roglainc/received_events","type":"User","site_admin":false},"created_at":"2019-07-31T20:55:51Z","updated_at":"2019-07-31T20:55:51Z","author_association":"NONE","body":"Yes, I can confirm! I see the same pattern:\r\n\r\n.Net Core Preview 6:\r\nProxy-Authorization: Negotiate Y<omitted>\r\n\r\n.Net Core Preview 7:\r\nProxy-Authorization: Negotiate T<omitted>\r\n\r\nThe other thing, CRLF at end of token, is strange. When using preview 6 I do not see it in Wireshark when the HTTPS-call succeeds, only in my own quick-hack middle man logger which injects in a way that the proxy authentication fails.\r\n"}}
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