?start_pos_in:int ->
?start_pos_out:int ->
?resume:string ->
role:[ `Client | `Server ] ->
rd:Netchannels.raw_in_channel ->
wr:Netchannels.raw_out_channel ->
peer_name:string option ->
Netsys_crypto_types.tls_config -> Netchannels_crypto.tls_channel
