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/*
* Copyright (C) 2019 Intel Corporation. All rights reserved.
* SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#ifndef CONNECTION_LIB_H_
#define CONNECTION_LIB_H_
#include "bi-inc/attr_container.h"
#include "wasm_export.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* This file defines connection library which should be implemented by
* different platforms
*/
/*
* @brief Open a connection.
*
* @param name name of the connection, "TCP", "UDP" or "UART"
* @param args connection arguments, such as: ip:127.0.0.1, port:8888
*
* @return 0~0xFFFFFFFE means id of the connection, otherwise(-1) means fail
*/
typedef uint32 (*connection_open_f)(wasm_module_inst_t module_inst,
const char *name, attr_container_t *args);
/*
* @brief Close a connection.
*
* @param handle of the connection
*/
typedef void (*connection_close_f)(uint32 handle);
/*
* @brief Send data to the connection in non-blocking manner.
*
* @param handle of the connection
* @param data data buffer to be sent
* @param len length of the data in byte
*
* @return actual length sent, -1 if fail
*/
typedef int (*connection_send_f)(uint32 handle, const char *data, int len);
/*
* @brief Configure connection.
*
* @param handle of the connection
* @param cfg configurations
*
* @return true if success, false otherwise
*/
typedef bool (*connection_config_f)(uint32 handle, attr_container_t *cfg);
/* Raw connection interface for platform to implement */
typedef struct _connection_interface {
connection_open_f _open;
connection_close_f _close;
connection_send_f _send;
connection_config_f _config;
} connection_interface_t;
/* Platform must define this interface */
extern connection_interface_t connection_impl;
#ifdef __cplusplus
}
#endif
#endif /* CONNECTION_LIB_H_ */
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