# TlsDomainServer The `TlsDomainServer` struct specifies information about how to define the server side of a [TLS Domain](../../multiplexing.md#tls-domains). It is a lua object with the following fields: ```lua { -- The address:port combination on which the server will listen -- for client connections bind_address = "server.hostname:8080", -- the path to an x509 PEM encoded private key file. -- You can omit this if your tls_client is using bootstrap_via_ssh. -- pem_private_key = "/path/to/key.pem", -- the path to an x509 PEM encoded certificate file. -- You can omit this if your tls_client is using bootstrap_via_ssh. -- pem_cert = "/path/to/cert.pem", -- the path to an x509 PEM encoded CA chain file. -- You can omit this if your tls_client is using bootstrap_via_ssh. -- pem_ca = "/path/to/chain.pem", -- A set of paths to load additional CA certificates. -- Each entry can be either the path to a directory -- or to a PEM encoded CA file. If an entry is a directory, -- then its contents will be loaded as CA certs and added -- to the trust store. -- You can omit this if your tls_client is using bootstrap_via_ssh. -- pem_root_certs = { "/some/path/ca1.pem", "/some/path/ca2.pem" }, } ```