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/* Copyright 2013 The Chromium Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/**
* This file defines the <code>PPB_UDPSocket</code> interface.
*/
[generate_thunk]
label Chrome {
M29 = 1.0
};
/**
* Option names used by <code>SetOption()</code>.
*/
[assert_size(4)]
enum PP_UDPSocket_Option {
/**
* Allows the socket to share the local address to which it will be bound with
* other processes. Value's type should be <code>PP_VARTYPE_BOOL</code>.
* This option can only be set before calling <code>Bind()</code>.
*/
PP_UDPSOCKET_OPTION_ADDRESS_REUSE = 0,
/**
* Allows sending and receiving packets to and from broadcast addresses.
* Value's type should be <code>PP_VARTYPE_BOOL</code>.
* This option can only be set before calling <code>Bind()</code>.
*/
PP_UDPSOCKET_OPTION_BROADCAST = 1,
/**
* Specifies the total per-socket buffer space reserved for sends. Value's
* type should be <code>PP_VARTYPE_INT32</code>.
* This option can only be set after a successful <code>Bind()</code> call.
*
* Note: This is only treated as a hint for the browser to set the buffer
* size. Even if <code>SetOption()</code> succeeds, the browser doesn't
* guarantee it will conform to the size.
*/
PP_UDPSOCKET_OPTION_SEND_BUFFER_SIZE = 2,
/**
* Specifies the total per-socket buffer space reserved for receives. Value's
* type should be <code>PP_VARTYPE_INT32</code>.
* This option can only be set after a successful <code>Bind()</code> call.
*
* Note: This is only treated as a hint for the browser to set the buffer
* size. Even if <code>SetOption()</code> succeeds, the browser doesn't
* guarantee it will conform to the size.
*/
PP_UDPSOCKET_OPTION_RECV_BUFFER_SIZE = 3
};
/**
* The <code>PPB_UDPSocket</code> interface provides UDP socket operations.
*
* Permissions: Apps permission <code>socket</code> with subrule
* <code>udp-bind</code> is required for <code>Bind()</code>; subrule
* <code>udp-send-to</code> is required for <code>SendTo()</code>.
* For more details about network communication permissions, please see:
* http://developer.chrome.com/apps/app_network.html
*/
interface PPB_UDPSocket {
/**
* Creates a UDP socket resource.
*
* @param[in] instance A <code>PP_Instance</code> identifying one instance of
* a module.
*
* @return A <code>PP_Resource</code> corresponding to a UDP socket or 0
* on failure.
*/
PP_Resource Create([in] PP_Instance instance);
/**
* Determines if a given resource is a UDP socket.
*
* @param[in] resource A <code>PP_Resource</code> to check.
*
* @return <code>PP_TRUE</code> if the input is a <code>PPB_UDPSocket</code>
* resource; <code>PP_FALSE</code> otherwise.
*/
PP_Bool IsUDPSocket([in] PP_Resource resource);
/**
* Binds the socket to the given address.
*
* @param[in] udp_socket A <code>PP_Resource</code> corresponding to a UDP
* socket.
* @param[in] addr A <code>PPB_NetAddress</code> resource.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion.
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
* <code>PP_ERROR_NOACCESS</code> will be returned if the caller doesn't have
* required permissions. <code>PP_ERROR_ADDRESS_IN_USE</code> will be returned
* if the address is already in use.
*/
int32_t Bind([in] PP_Resource udp_socket,
[in] PP_Resource addr,
[in] PP_CompletionCallback callback);
/**
* Gets the address that the socket is bound to. The socket must be bound.
*
* @param[in] udp_socket A <code>PP_Resource</code> corresponding to a UDP
* socket.
*
* @return A <code>PPB_NetAddress</code> resource on success or 0 on failure.
*/
PP_Resource GetBoundAddress([in] PP_Resource udp_socket);
/**
* Receives data from the socket and stores the source address. The socket
* must be bound.
*
* @param[in] udp_socket A <code>PP_Resource</code> corresponding to a UDP
* socket.
* @param[out] buffer The buffer to store the received data on success. It
* must be at least as large as <code>num_bytes</code>.
* @param[in] num_bytes The number of bytes to receive.
* @param[out] addr A <code>PPB_NetAddress</code> resource to store the source
* address on success.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion.
*
* @return A non-negative number on success to indicate how many bytes have
* been received; otherwise, an error code from <code>pp_errors.h</code>.
*/
int32_t RecvFrom([in] PP_Resource udp_socket,
[out] str_t buffer,
[in] int32_t num_bytes,
[out] PP_Resource addr,
[in] PP_CompletionCallback callback);
/**
* Sends data to a specific destination. The socket must be bound.
*
* @param[in] udp_socket A <code>PP_Resource</code> corresponding to a UDP
* socket.
* @param[in] buffer The buffer containing the data to send.
* @param[in] num_bytes The number of bytes to send.
* @param[in] addr A <code>PPB_NetAddress</code> resource holding the
* destination address.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion.
*
* @return A non-negative number on success to indicate how many bytes have
* been sent; otherwise, an error code from <code>pp_errors.h</code>.
* <code>PP_ERROR_NOACCESS</code> will be returned if the caller doesn't have
* required permissions.
*/
int32_t SendTo([in] PP_Resource udp_socket,
[in] str_t buffer,
[in] int32_t num_bytes,
[in] PP_Resource addr,
[in] PP_CompletionCallback callback);
/**
* Cancels all pending reads and writes, and closes the socket. Any pending
* callbacks will still run, reporting <code>PP_ERROR_ABORTED</code> if
* pending IO was interrupted. After a call to this method, no output
* parameters passed into previous <code>RecvFrom()</code> calls will be
* accessed. It is not valid to call <code>Bind()</code> again.
*
* The socket is implicitly closed if it is destroyed, so you are not
* required to call this method.
*
* @param[in] udp_socket A <code>PP_Resource</code> corresponding to a UDP
* socket.
*/
void Close([in] PP_Resource udp_socket);
/**
* Sets a socket option on the UDP socket.
* Please see the <code>PP_UDPSocket_Option</code> description for option
* names, value types and allowed values.
*
* @param[in] udp_socket A <code>PP_Resource</code> corresponding to a UDP
* socket.
* @param[in] name The option to set.
* @param[in] value The option value to set.
* @param[in] callback A <code>PP_CompletionCallback</code> to be called upon
* completion.
*
* @return An int32_t containing an error code from <code>pp_errors.h</code>.
*/
int32_t SetOption([in] PP_Resource udp_socket,
[in] PP_UDPSocket_Option name,
[in] PP_Var value,
[in] PP_CompletionCallback callback);
};
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