TLS
Enable TLS in Bun.serve
Bun's TLS support is built in, powered by BoringSSL. To enable TLS, pass both key and cert.
Bun.serve({
tls: {
key: Bun.file("./key.pem"),
cert: Bun.file("./cert.pem"),
},
});The key and cert fields expect the contents of your TLS key and certificate, not a path to it. Each can be a string, BunFile, TypedArray, or Buffer.
Bun.serve({
tls: {
key: Bun.file("./key.pem"), // BunFile
key: fs.readFileSync("./key.pem"), // Buffer
key: fs.readFileSync("./key.pem", "utf8"), // string
key: [Bun.file("./key1.pem"), Bun.file("./key2.pem")], // array of above
},
});Passphrase
If your private key is encrypted with a passphrase, provide a value for passphrase to decrypt it.
Bun.serve({
tls: {
key: Bun.file("./key.pem"),
cert: Bun.file("./cert.pem"),
passphrase: "my-secret-passphrase",
},
});CA Certificates
Pass ca to override the trusted CA certificates. By default, the server trusts the list of well-known CAs curated by Mozilla; setting ca replaces that list.
Bun.serve({
tls: {
key: Bun.file("./key.pem"), // path to TLS key
cert: Bun.file("./cert.pem"), // path to TLS cert
ca: Bun.file("./ca.pem"), // path to root CA certificate
},
});Diffie-Hellman
To override Diffie-Hellman parameters:
Bun.serve({
tls: {
dhParamsFile: "/path/to/dhparams.pem", // path to Diffie Hellman parameters
},
});Server name indication (SNI)
To configure the server name indication (SNI) for the server, set the serverName field in the tls object.
Bun.serve({
tls: {
serverName: "my-server.com", // SNI
},
});To allow multiple server names, pass an array of objects to tls, each with a serverName field.
Bun.serve({
tls: [
{
key: Bun.file("./key1.pem"),
cert: Bun.file("./cert1.pem"),
serverName: "my-server1.com",
},
{
key: Bun.file("./key2.pem"),
cert: Bun.file("./cert2.pem"),
serverName: "my-server2.com",
},
],
});