| 1 | ## [4.1.1](https://github.com/socketio/engine.io/compare/4.1.0...4.1.1) (2021-02-02)
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| 2 |
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| 3 |
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| 4 | ### Bug Fixes
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| 5 |
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| 6 | * do not reset the ping timer after upgrade ([ff2b8ab](https://github.com/socketio/engine.io/commit/ff2b8aba48ebcb0de5626d3b76fddc94c398395f)), closes [/github.com/socketio/socket.io-client-swift/pull/1309#issuecomment-768475704](https://github.com//github.com/socketio/socket.io-client-swift/pull/1309/issues/issuecomment-768475704)
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| 7 |
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| 8 |
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| 9 | # [4.1.0](https://github.com/socketio/engine.io/compare/4.0.6...4.1.0) (2021-01-14)
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| 10 |
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| 11 |
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| 12 | ### Features
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| 13 |
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| 14 | * add support for v3.x clients ([663d326](https://github.com/socketio/engine.io/commit/663d326d18de598318bd2120b2b70cd51adf8955))
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| 15 |
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| 16 |
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| 17 | ## [4.0.6](https://github.com/socketio/engine.io/compare/4.0.5...4.0.6) (2021-01-04)
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| 18 |
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| 19 |
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| 20 | ### Bug Fixes
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| 21 |
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| 22 | * correctly pass the options when using the Server constructor ([#610](https://github.com/socketio/engine.io/issues/610)) ([cec2750](https://github.com/socketio/engine.io/commit/cec27502f5b55c8a2ff289db34019629bf6a97ca))
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| 23 |
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| 24 |
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| 25 |
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| 26 | # [3.5.0](https://github.com/socketio/engine.io/compare/3.4.2...3.5.0) (2020-12-30)
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| 27 |
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| 28 |
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| 29 | ### Features
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| 30 |
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| 31 | * add support for all cookie options ([19cc582](https://github.com/socketio/engine.io/commit/19cc58264a06dca47ed401fbaca32dcdb80a903b)), closes [/github.com/jshttp/cookie#options-1](https://github.com//github.com/jshttp/cookie/issues/options-1)
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| 32 | * disable perMessageDeflate by default ([5ad2736](https://github.com/socketio/engine.io/commit/5ad273601eb66c7b318542f87026837bf9dddd21))
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| 33 |
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| 34 |
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| 35 |
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| 36 | ## [4.0.5](https://github.com/socketio/engine.io/compare/4.0.4...4.0.5) (2020-12-07)
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| 37 |
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| 38 | No change on the server-side, this matches the client release.
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| 39 |
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| 40 | ## [4.0.4](https://github.com/socketio/engine.io/compare/4.0.3...4.0.4) (2020-11-17)
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| 41 |
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| 42 | No change on the server-side, this matches the client release.
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| 43 |
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| 44 | ## [4.0.3](https://github.com/socketio/engine.io/compare/4.0.2...4.0.3) (2020-11-17)
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| 45 |
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| 46 | No change on the server-side, this matches the client release.
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| 47 |
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| 48 | ## [4.0.2](https://github.com/socketio/engine.io/compare/4.0.1...4.0.2) (2020-11-09)
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| 49 |
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| 50 |
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| 51 | ### Bug Fixes
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| 52 |
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| 53 | * add extension in the package.json main entry ([#608](https://github.com/socketio/engine.io/issues/608)) ([17b8c2f](https://github.com/socketio/engine.io/commit/17b8c2f199e7a307b6d6294b8599abacb3ec56e7))
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| 54 |
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| 55 |
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| 56 | ## [4.0.1](https://github.com/socketio/engine.io/compare/4.0.0...4.0.1) (2020-10-21)
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| 57 |
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| 58 |
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| 59 | ### Bug Fixes
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| 60 |
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| 61 | * do not overwrite CORS headers upon error ([fe093ba](https://github.com/socketio/engine.io/commit/fe093bae1adce99e01dfdd3ce7542957785098b5))
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| 62 |
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| 63 |
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| 64 |
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| 65 | # [4.0.0](https://github.com/socketio/engine.io/compare/v4.0.0-alpha.1...4.0.0) (2020-09-10)
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| 66 |
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| 67 | More details about this release in the blog post: https://socket.io/blog/engine-io-4-release/
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| 68 |
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| 69 | ### Bug Fixes
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| 70 |
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| 71 | * ignore errors when forcefully closing the socket ([#601](https://github.com/socketio/engine.io/issues/601)) ([dcdbccb](https://github.com/socketio/engine.io/commit/dcdbccb3dd8a7b7db057d23925356034fcd35d48))
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| 72 | * remove implicit require of uws ([82cdca2](https://github.com/socketio/engine.io/commit/82cdca23bab0ed69b61b60961900d456a3065e6a))
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| 73 |
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| 74 |
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| 75 | ### Features
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| 76 |
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| 77 | * disable perMessageDeflate by default ([078527a](https://github.com/socketio/engine.io/commit/078527a384b70dc46d99083fa218be5d45213e51))
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| 78 |
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| 79 | #### Links
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| 80 |
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| 81 | - Diff: [v4.0.0-alpha.1...4.0.0](https://github.com/socketio/engine.io/compare/v4.0.0-alpha.1...4.0.0)
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| 82 | - Full diff: [3.4.0...4.0.0](https://github.com/socketio/engine.io/compare/3.4.0...4.0.0)
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| 83 | - Client release: [4.0.0](https://github.com/socketio/engine.io-client/releases/tag/4.0.0)
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| 84 | - ws version: [^7.1.2](https://github.com/websockets/ws/releases/tag/7.1.2)
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| 85 |
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| 86 |
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| 87 | ## [3.4.2](https://github.com/socketio/engine.io/compare/3.4.1...3.4.2) (2020-06-04)
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| 88 |
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| 89 |
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| 90 | ### Bug Fixes
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| 91 |
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| 92 | * remove explicit require of uws ([85e544a](https://github.com/socketio/engine.io/commit/85e544afd95a5890761a613263a5eba0c9a18a93))
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| 93 |
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| 94 | #### Links
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| 95 |
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| 96 | - Diff: [3.4.1...3.4.2](https://github.com/socketio/engine.io/compare/3.4.1...3.4.2)
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| 97 | - Client release: -
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| 98 | - ws version: [^7.1.2](https://github.com/websockets/ws/releases/tag/7.1.2)
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| 99 |
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| 100 |
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| 101 |
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| 102 | ## [3.4.1](https://github.com/socketio/engine.io/compare/3.4.0...3.4.1) (2020-04-17)
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| 103 |
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| 104 |
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| 105 | ### Bug Fixes
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| 106 |
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| 107 | * ignore errors when forcefully closing the socket ([da851ec](https://github.com/socketio/engine.io/commit/da851ec4ec89d96df2ee5c711f328b5d795423e9))
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| 108 | * use SameSite=Strict by default ([001ca62](https://github.com/socketio/engine.io/commit/001ca62cc4a8f511f3b2fbd9e4493ad274a6a0e5))
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| 109 |
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| 110 | #### Links
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| 111 |
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| 112 | - Diff: [3.4.0...3.4.1](https://github.com/socketio/engine.io/compare/3.4.0...3.4.1)
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| 113 | - Client release: [3.4.1](https://github.com/socketio/engine.io-client/releases/tag/3.4.1)
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| 114 | - ws version: [^7.1.2](https://github.com/websockets/ws/releases/tag/7.1.2)
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| 115 |
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| 116 |
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| 117 |
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| 118 | # [4.0.0-alpha.1](https://github.com/socketio/engine.io/compare/v4.0.0-alpha.0...v4.0.0-alpha.1) (2020-02-12)
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| 119 |
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| 120 | #### Links
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| 121 |
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| 122 | - Diff: [v4.0.0-alpha.0...v4.0.0-alpha.1](https://github.com/socketio/engine.io-client/compare/v4.0.0-alpha.0...v4.0.0-alpha.1)
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| 123 | - Client release: [v4.0.0-alpha.1](https://github.com/socketio/engine.io-client/releases/tag/v4.0.0-alpha.1)
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| 124 | - ws version: [^7.1.2](https://github.com/websockets/ws/releases/tag/7.1.2)
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| 125 |
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| 126 |
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| 127 |
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| 128 | # [4.0.0-alpha.0](https://github.com/socketio/engine.io/compare/3.4.0...v4.0.0-alpha.0) (2020-02-12)
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| 129 |
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| 130 |
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| 131 | ### Features
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| 132 |
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| 133 | * decrease the default value of maxHttpBufferSize ([734f9d1](https://github.com/socketio/engine.io/commit/734f9d1268840722c41219e69eb58318e0b2ac6b))
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| 134 | * disable cookie by default and add sameSite attribute ([a374471](https://github.com/socketio/engine.io/commit/a374471d06e3681a769766a1d068898182f9305f)), closes [/github.com/jshttp/cookie#options-1](https://github.com//github.com/jshttp/cookie/issues/options-1)
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| 135 | * generateId method can now return a Promise ([f3c291f](https://github.com/socketio/engine.io/commit/f3c291fa613a9d50c924d74293035737fdace4f2))
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| 136 | * reverse the ping-pong mechanism ([31ff875](https://github.com/socketio/engine.io/commit/31ff87593f231b86dc47ec5761936439ebd53c20))
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| 137 | * use the cors module to handle cross-origin requests ([61b9492](https://github.com/socketio/engine.io/commit/61b949259ed966ef6fc8bfd61f14d1a2ef06d319))
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| 138 |
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| 139 |
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| 140 | ### BREAKING CHANGES
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| 141 |
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| 142 | * the handlePreflightRequest option is removed by the change.
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| 143 |
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| 144 | Before:
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| 145 |
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| 146 | ```
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| 147 | new Server({
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| 148 | handlePreflightRequest: (req, res) => {
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| 149 | res.writeHead(200, {
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| 150 | "Access-Control-Allow-Origin": 'https://example.com',
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| 151 | "Access-Control-Allow-Methods": 'GET',
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| 152 | "Access-Control-Allow-Headers": 'Authorization',
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| 153 | "Access-Control-Allow-Credentials": true
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| 154 | });
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| 155 | res.end();
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| 156 | }
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| 157 | })
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| 158 | ```
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| 159 |
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| 160 | After:
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| 161 |
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| 162 | ```
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| 163 | new Server({
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| 164 | cors: {
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| 165 | origin: "https://example.com",
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| 166 | methods: ["GET"],
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| 167 | allowedHeaders: ["Authorization"],
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| 168 | credentials: true
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| 169 | }
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| 170 | })
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| 171 | ```
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| 172 | * the syntax has changed from
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| 173 |
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| 174 | ```
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| 175 | new Server({
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| 176 | cookieName: "test",
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| 177 | cookieHttpOnly: false,
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| 178 | cookiePath: "/custom"
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| 179 | })
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| 180 | ```
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| 181 |
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| 182 | to
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| 183 |
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| 184 | ```
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| 185 | new Server({
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| 186 | cookie: {
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| 187 | name: "test",
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| 188 | httpOnly: false,
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| 189 | path: "/custom"
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| 190 | }
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| 191 | })
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| 192 | ```
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| 193 |
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| 194 | All other options (domain, maxAge, sameSite, ...) are now supported.
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| 195 |
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| 196 | * v3.x clients will not be able to connect anymore (they will send a ping packet and timeout while waiting for a pong packet).
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| 197 |
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| 198 | #### Links
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| 199 |
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| 200 | - Diff: [3.4.0...v4.0.0-alpha.0](https://github.com/socketio/engine.io-client/compare/3.4.0...v4.0.0-alpha.0)
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| 201 | - Client release: [v4.0.0-alpha.0](https://github.com/socketio/engine.io-client/releases/tag/v4.0.0-alpha.0)
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| 202 | - ws version: [^7.1.2](https://github.com/websockets/ws/releases/tag/7.1.2)
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| 203 |
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