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ALPN Status
Alexander Kjeldaas edited this page Jul 23, 2015
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This page tracks implementation status of ALPN.
| Language | Library | Status | Notes |
|---|---|---|---|
| C | OpenSSL | released | as of 1.0.2 |
| C | GnuTLS | released | as of 3.2.0 (stable-next) |
| C | NSS | released | client and server support |
| C | PolarSSL | released | since 1.3.6 |
| Python | native | in 3.5 and 2.7.10 | OpenSSL based |
| Python | tlslite | requested | |
| Python | pyOpenSSL | released | 0.15.0, with cryptography 0.9 |
| Go | native | in next release | |
| C++ | yaSSL | requested | |
| JavaScript | NodeJS | requested | waiting for stable OpenSSL |
| Ruby | native | requested | OpenSSL-based |
| C | SChannel | released | Added in Windows 8.1 / Server 2012 R2 |
| Java | android | released | Added in Android 4.4 |
| Java | jetty | released | |
| Haskell | warp hackage | released |
Note that some client implementations deal very poorly if a server sends both ALPN and NPN in the ServerHello. When a server responds negotiating a protocol via ALPN in the ServerHello, it must not also send a list of protocols for NPN negotiation as well.
NOTE: All contributions are made under these terms.