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(*
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
under the License.
*)
open Thrift
module T = Transport
class t host port=
object (self)
inherit T.t
val mutable chans = None
method isOpen = chans != None
method opn =
try
let addr = (let {Unix.h_addr_list=x} = Unix.gethostbyname host in x.(0)) in
chans <- Some(Unix.open_connection (Unix.ADDR_INET (addr,port)))
with
Unix.Unix_error (e,fn,_) -> raise (T.E (T.NOT_OPEN, ("TSocket: Could not connect to "^host^":"^(string_of_int port)^" because: "^fn^":"^(Unix.error_message e))))
| _ -> raise (T.E (T.NOT_OPEN, ("TSocket: Could not connect to "^host^":"^(string_of_int port))))
method close =
match chans with
None -> ()
| Some(inc,out) -> (Unix.shutdown_connection inc;
close_in inc;
chans <- None)
method read buf off len = match chans with
None -> raise (T.E (T.NOT_OPEN, "TSocket: Socket not open"))
| Some(i,o) ->
try
really_input i buf off len; len
with
Unix.Unix_error (e,fn,_) -> raise (T.E (T.UNKNOWN, ("TSocket: Could not read "^(string_of_int len)^" from "^host^":"^(string_of_int port)^" because: "^fn^":"^(Unix.error_message e))))
| _ -> raise (T.E (T.UNKNOWN, ("TSocket: Could not read "^(string_of_int len)^" from "^host^":"^(string_of_int port))))
method write buf off len = match chans with
None -> raise (T.E (T.NOT_OPEN, "TSocket: Socket not open"))
| Some(i,o) -> output o buf off len
method flush = match chans with
None -> raise (T.E (T.NOT_OPEN, "TSocket: Socket not open"))
| Some(i,o) -> flush o
end
|
