mirror of
https://github.com/cesanta/mongoose.git
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521 lines
23 KiB
C
521 lines
23 KiB
C
/*
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* FreeRTOS+TCP V2.3.2
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* http://aws.amazon.com/freertos
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* http://www.FreeRTOS.org
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*/
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#ifndef FREERTOS_SOCKETS_H
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#define FREERTOS_SOCKETS_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Standard includes. */
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#include <string.h>
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/* Application level configuration options. */
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#include "FreeRTOSIPConfig.h"
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#ifndef FREERTOS_IP_CONFIG_H
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#error FreeRTOSIPConfig.h has not been included yet
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#endif
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/* Event bit definitions are required by the select functions. */
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#include "event_groups.h"
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#ifndef INC_FREERTOS_H
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#error FreeRTOS.h must be included before FreeRTOS_Sockets.h.
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#endif
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#ifndef INC_TASK_H
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#ifndef TASK_H /* For compatibility with older FreeRTOS versions. */
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#error The FreeRTOS header file task.h must be included before FreeRTOS_Sockets.h.
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#endif
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#endif
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/* Assigned to an Socket_t variable when the socket is not valid, probably
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* because it could not be created. */
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#define FREERTOS_INVALID_SOCKET ( ( Socket_t ) ~0U )
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/* API function error values. As errno is supported, the FreeRTOS sockets
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* functions return error codes rather than just a pass or fail indication. */
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/* HT: Extended the number of error codes, gave them positive values and if possible
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* the corresponding found in errno.h
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* In case of an error, API's will still return negative numbers, e.g.
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* return -pdFREERTOS_ERRNO_EWOULDBLOCK;
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* in case an operation would block */
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/* The following defines are obsolete, please use -pdFREERTOS_ERRNO_Exxx */
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#define FREERTOS_SOCKET_ERROR ( -1 )
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#define FREERTOS_EWOULDBLOCK ( -pdFREERTOS_ERRNO_EWOULDBLOCK )
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#define FREERTOS_EINVAL ( -pdFREERTOS_ERRNO_EINVAL )
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#define FREERTOS_EADDRNOTAVAIL ( -pdFREERTOS_ERRNO_EADDRNOTAVAIL )
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#define FREERTOS_EADDRINUSE ( -pdFREERTOS_ERRNO_EADDRINUSE )
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#define FREERTOS_ENOBUFS ( -pdFREERTOS_ERRNO_ENOBUFS )
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#define FREERTOS_ENOPROTOOPT ( -pdFREERTOS_ERRNO_ENOPROTOOPT )
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#define FREERTOS_ECLOSED ( -pdFREERTOS_ERRNO_ENOTCONN )
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/* Values for the parameters to FreeRTOS_socket(), inline with the Berkeley
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* standard. See the documentation of FreeRTOS_socket() for more information. */
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#define FREERTOS_AF_INET ( 2 )
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#define FREERTOS_AF_INET6 ( 10 )
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#define FREERTOS_SOCK_DGRAM ( 2 )
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#define FREERTOS_IPPROTO_UDP ( 17 )
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#define FREERTOS_SOCK_STREAM ( 1 )
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#define FREERTOS_IPPROTO_TCP ( 6 )
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/* IP packet of type "Any local network"
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* can be used in stead of TCP for testing with sockets in raw mode
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*/
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#define FREERTOS_IPPROTO_USR_LAN ( 63 )
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/* A bit value that can be passed into the FreeRTOS_sendto() function as part of
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* the flags parameter. Setting the FREERTOS_ZERO_COPY in the flags parameter
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* indicates that the zero copy interface is being used. See the documentation for
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* FreeRTOS_sockets() for more information. */
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#define FREERTOS_ZERO_COPY ( 1 )
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/* Values that can be passed in the option name parameter of calls to
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* FreeRTOS_setsockopt(). */
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#define FREERTOS_SO_RCVTIMEO ( 0 ) /* Used to set the receive time out. */
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#define FREERTOS_SO_SNDTIMEO ( 1 ) /* Used to set the send time out. */
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#define FREERTOS_SO_UDPCKSUM_OUT ( 2 ) /* Used to turn the use of the UDP checksum by a socket on or off. This also doubles as part of an 8-bit bitwise socket option. */
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#if ( ipconfigSOCKET_HAS_USER_SEMAPHORE == 1 )
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#define FREERTOS_SO_SET_SEMAPHORE ( 3 ) /* Used to set a user's semaphore */
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#endif
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#define FREERTOS_SO_SNDBUF ( 4 ) /* Set the size of the send buffer (TCP only) */
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#define FREERTOS_SO_RCVBUF ( 5 ) /* Set the size of the receive buffer (TCP only) */
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#if ipconfigUSE_CALLBACKS == 1
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#define FREERTOS_SO_TCP_CONN_HANDLER ( 6 ) /* Install a callback for (dis) connection events. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
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#define FREERTOS_SO_TCP_RECV_HANDLER ( 7 ) /* Install a callback for receiving TCP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
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#define FREERTOS_SO_TCP_SENT_HANDLER ( 8 ) /* Install a callback for sending TCP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
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#define FREERTOS_SO_UDP_RECV_HANDLER ( 9 ) /* Install a callback for receiving UDP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
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#define FREERTOS_SO_UDP_SENT_HANDLER ( 10 ) /* Install a callback for sending UDP data. Supply pointer to 'F_TCP_UDP_Handler_t' (see below) */
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#endif /* ipconfigUSE_CALLBACKS */
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#define FREERTOS_SO_REUSE_LISTEN_SOCKET ( 11 ) /* When a listening socket gets connected, do not create a new one but re-use it */
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#define FREERTOS_SO_CLOSE_AFTER_SEND ( 12 ) /* As soon as the last byte has been transmitted, finalise the connection */
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#define FREERTOS_SO_WIN_PROPERTIES ( 13 ) /* Set all buffer and window properties in one call, parameter is pointer to WinProperties_t */
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#define FREERTOS_SO_SET_FULL_SIZE ( 14 ) /* Refuse to send packets smaller than MSS */
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#define FREERTOS_SO_STOP_RX ( 15 ) /* Temporarily hold up reception, used by streaming client */
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#if ( ipconfigUDP_MAX_RX_PACKETS > 0 )
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#define FREERTOS_SO_UDP_MAX_RX_PACKETS ( 16 ) /* This option helps to limit the maximum number of packets a UDP socket will buffer */
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#endif
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#if ( ipconfigSOCKET_HAS_USER_WAKE_CALLBACK == 1 )
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#define FREERTOS_SO_WAKEUP_CALLBACK ( 17 )
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#endif
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#define FREERTOS_SO_SET_LOW_HIGH_WATER ( 18 )
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#define FREERTOS_NOT_LAST_IN_FRAGMENTED_PACKET ( 0x80 ) /* For internal use only, but also part of an 8-bit bitwise value. */
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#define FREERTOS_FRAGMENTED_PACKET ( 0x40 ) /* For internal use only, but also part of an 8-bit bitwise value. */
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/* Values for flag for FreeRTOS_shutdown(). */
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#define FREERTOS_SHUT_RD ( 0 ) /* Not really at this moment, just for compatibility of the interface */
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#define FREERTOS_SHUT_WR ( 1 )
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#define FREERTOS_SHUT_RDWR ( 2 )
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/* Values for flag for FreeRTOS_recv(). */
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#define FREERTOS_MSG_OOB ( 2 ) /* process out-of-band data */
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#define FREERTOS_MSG_PEEK ( 4 ) /* peek at incoming message */
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#define FREERTOS_MSG_DONTROUTE ( 8 ) /* send without using routing tables */
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#define FREERTOS_MSG_DONTWAIT ( 16 ) /* Can be used with recvfrom(), sendto(), recv(), and send(). */
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/**
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* Structure to hold the properties of Tx/Rx buffers and windows.
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*/
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typedef struct xWIN_PROPS
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{
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/* Properties of the Tx buffer and Tx window */
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int32_t lTxBufSize; /**< Unit: bytes */
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int32_t lTxWinSize; /**< Unit: MSS */
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/* Properties of the Rx buffer and Rx window */
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int32_t lRxBufSize; /**< Unit: bytes */
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int32_t lRxWinSize; /**< Unit: MSS */
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} WinProperties_t;
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/**
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* Structure to pass for the 'FREERTOS_SO_SET_LOW_HIGH_WATER' option
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*/
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typedef struct xLOW_HIGH_WATER
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{
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size_t uxLittleSpace; /**< Send a STOP when buffer space drops below X bytes */
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size_t uxEnoughSpace; /**< Send a GO when buffer space grows above X bytes */
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} LowHighWater_t;
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/* For compatibility with the expected Berkeley sockets naming. */
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#define socklen_t uint32_t
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/**
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* For this limited implementation, only two members are required in the
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* Berkeley style sockaddr structure.
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*/
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struct freertos_sockaddr
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{
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/* _HT_ On 32- and 64-bit architectures, the addition of the two uint8_t
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* fields doesn't make the structure bigger, due to alignment.
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* The fields are inserted as a preparation for IPv6. */
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/* sin_len and sin_family not used in the IPv4-only release. */
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uint8_t sin_len; /**< length of this structure. */
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uint8_t sin_family; /**< FREERTOS_AF_INET. */
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uint16_t sin_port; /**< The port */
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uint32_t sin_addr; /**< The IP address */
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};
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extern const char * FreeRTOS_inet_ntoa( uint32_t ulIPAddress,
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char * pcBuffer );
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#if ipconfigBYTE_ORDER == pdFREERTOS_LITTLE_ENDIAN
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#define FreeRTOS_inet_addr_quick( ucOctet0, ucOctet1, ucOctet2, ucOctet3 ) \
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( ( ( ( uint32_t ) ( ucOctet3 ) ) << 24UL ) | \
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( ( ( uint32_t ) ( ucOctet2 ) ) << 16UL ) | \
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( ( ( uint32_t ) ( ucOctet1 ) ) << 8UL ) | \
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( ( uint32_t ) ( ucOctet0 ) ) )
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#else /* ipconfigBYTE_ORDER */
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#define FreeRTOS_inet_addr_quick( ucOctet0, ucOctet1, ucOctet2, ucOctet3 ) \
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( ( ( ( uint32_t ) ( ucOctet0 ) ) << 24UL ) | \
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( ( ( uint32_t ) ( ucOctet1 ) ) << 16UL ) | \
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( ( ( uint32_t ) ( ucOctet2 ) ) << 8UL ) | \
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( ( uint32_t ) ( ucOctet3 ) ) )
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#endif /* ipconfigBYTE_ORDER */
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/* The socket type itself. */
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struct xSOCKET;
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typedef struct xSOCKET * Socket_t;
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typedef struct xSOCKET const * ConstSocket_t;
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static portINLINE BaseType_t xSocketValid( Socket_t xSocket )
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{
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BaseType_t xReturnValue = pdFALSE;
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/*
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* There are two values which can indicate an invalid socket:
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* FREERTOS_INVALID_SOCKET and NULL. In order to compare against
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* both values, the code cannot be compliant with rule 11.4,
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* hence the Coverity suppression statement below.
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*/
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/* coverity[misra_c_2012_rule_11_4_violation] */
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if( ( xSocket != FREERTOS_INVALID_SOCKET ) && ( xSocket != NULL ) )
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{
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xReturnValue = pdTRUE;
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}
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return xReturnValue;
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}
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#if ( ipconfigSUPPORT_SELECT_FUNCTION == 1 )
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/* The SocketSet_t type is the equivalent to the fd_set type used by the
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* Berkeley API. */
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struct xSOCKET_SET;
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typedef struct xSOCKET_SET * SocketSet_t;
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#endif /* ( ipconfigSUPPORT_SELECT_FUNCTION == 1 ) */
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/**
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* FULL, UP-TO-DATE AND MAINTAINED REFERENCE DOCUMENTATION FOR ALL THESE
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* FUNCTIONS IS AVAILABLE ON THE FOLLOWING URL:
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* http://www.FreeRTOS.org/FreeRTOS-Plus/FreeRTOS_Plus_TCP/FreeRTOS_TCP_API_Functions.html
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*/
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Socket_t FreeRTOS_socket( BaseType_t xDomain,
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BaseType_t xType,
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BaseType_t xProtocol );
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int32_t FreeRTOS_recvfrom( Socket_t xSocket,
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void * pvBuffer,
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size_t uxBufferLength,
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BaseType_t xFlags,
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struct freertos_sockaddr * pxSourceAddress,
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socklen_t * pxSourceAddressLength );
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int32_t FreeRTOS_sendto( Socket_t xSocket,
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const void * pvBuffer,
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size_t uxTotalDataLength,
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BaseType_t xFlags,
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const struct freertos_sockaddr * pxDestinationAddress,
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socklen_t xDestinationAddressLength );
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BaseType_t FreeRTOS_bind( Socket_t xSocket,
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struct freertos_sockaddr const * pxAddress,
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socklen_t xAddressLength );
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/* function to get the local address and IP port */
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size_t FreeRTOS_GetLocalAddress( ConstSocket_t xSocket,
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struct freertos_sockaddr * pxAddress );
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#if ( ipconfigETHERNET_DRIVER_FILTERS_PACKETS == 1 )
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/* Returns true if an UDP socket exists bound to mentioned port number. */
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BaseType_t xPortHasUDPSocket( uint16_t usPortNr );
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#endif
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#if ipconfigUSE_TCP == 1
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BaseType_t FreeRTOS_connect( Socket_t xClientSocket,
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struct freertos_sockaddr * pxAddress,
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socklen_t xAddressLength );
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BaseType_t FreeRTOS_listen( Socket_t xSocket,
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BaseType_t xBacklog );
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BaseType_t FreeRTOS_recv( Socket_t xSocket,
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void * pvBuffer,
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size_t uxBufferLength,
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BaseType_t xFlags );
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BaseType_t FreeRTOS_send( Socket_t xSocket,
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const void * pvBuffer,
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size_t uxDataLength,
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BaseType_t xFlags );
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Socket_t FreeRTOS_accept( Socket_t xServerSocket,
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struct freertos_sockaddr * pxAddress,
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socklen_t * pxAddressLength );
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BaseType_t FreeRTOS_shutdown( Socket_t xSocket,
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BaseType_t xHow );
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#if ( ipconfigSUPPORT_SIGNALS != 0 )
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/* Send a signal to the task which is waiting for a given socket. */
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BaseType_t FreeRTOS_SignalSocket( Socket_t xSocket );
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/* Send a signal to the task which reads from this socket (FromISR
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* version). */
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BaseType_t FreeRTOS_SignalSocketFromISR( Socket_t xSocket,
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BaseType_t * pxHigherPriorityTaskWoken );
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#endif /* ipconfigSUPPORT_SIGNALS */
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/* Return the remote address and IP port. */
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BaseType_t FreeRTOS_GetRemoteAddress( ConstSocket_t xSocket,
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struct freertos_sockaddr * pxAddress );
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#if ( ipconfigUSE_TCP == 1 )
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/* Returns pdTRUE if TCP socket is connected. */
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BaseType_t FreeRTOS_issocketconnected( ConstSocket_t xSocket );
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/* Returns the actual size of MSS being used. */
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BaseType_t FreeRTOS_mss( ConstSocket_t xSocket );
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#endif /* ( ipconfigUSE_TCP == 1 ) */
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/* For internal use only: return the connection status. */
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BaseType_t FreeRTOS_connstatus( ConstSocket_t xSocket );
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/* Returns the number of bytes that may be added to txStream */
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BaseType_t FreeRTOS_maywrite( ConstSocket_t xSocket );
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/*
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* Two helper functions, mostly for testing
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* rx_size returns the number of bytes available in the Rx buffer
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* tx_space returns the free space in the Tx buffer
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*/
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#if ( ipconfigUSE_TCP == 1 )
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BaseType_t FreeRTOS_rx_size( ConstSocket_t xSocket );
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BaseType_t FreeRTOS_tx_space( ConstSocket_t xSocket );
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BaseType_t FreeRTOS_tx_size( ConstSocket_t xSocket );
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#endif
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/* Returns the number of outstanding bytes in txStream. */
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/* The function FreeRTOS_outstanding() was already implemented
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* FreeRTOS_tx_size(). */
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#define FreeRTOS_outstanding( xSocket ) FreeRTOS_tx_size( xSocket )
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/* Returns the number of bytes in the socket's rxStream. */
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/* The function FreeRTOS_recvcount() was already implemented
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* FreeRTOS_rx_size(). */
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#define FreeRTOS_recvcount( xSocket ) FreeRTOS_rx_size( xSocket )
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/*
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* For advanced applications only:
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* Get a direct pointer to the circular transmit buffer.
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* '*pxLength' will contain the number of bytes that may be written.
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*/
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uint8_t * FreeRTOS_get_tx_head( ConstSocket_t xSocket,
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BaseType_t * pxLength );
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#endif /* ipconfigUSE_TCP */
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#if ( ipconfigUSE_CALLBACKS != 0 )
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/*
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* Connect / disconnect handler for a TCP socket
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* For example:
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* static void vMyConnectHandler (Socket_t xSocket, BaseType_t ulConnected)
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* {
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* }
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* F_TCP_UDP_Handler_t xHnd = { vMyConnectHandler };
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* FreeRTOS_setsockopt( sock, 0, FREERTOS_SO_TCP_CONN_HANDLER, ( void * ) &xHnd, sizeof( xHnd ) );
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*/
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#ifdef __COVERITY__
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typedef void (* FOnConnected_t )( Socket_t xSocket,
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BaseType_t ulConnected );
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#else
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typedef void (* FOnConnected_t )( Socket_t,
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BaseType_t );
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#endif
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/*
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* Reception handler for a TCP socket
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* A user-proved function will be called on reception of a message
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* If the handler returns a positive number, the messages will not be stored
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* For example:
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* static BaseType_t xOnTCPReceive( Socket_t xSocket, void * pData, size_t uxLength )
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* {
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* // handle the message
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* return 1;
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* }
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* F_TCP_UDP_Handler_t xHand = { xOnTCPReceive };
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* FreeRTOS_setsockopt( sock, 0, FREERTOS_SO_TCP_RECV_HANDLER, ( void * ) &xHand, sizeof( xHand ) );
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*/
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#ifdef __COVERITY__
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typedef BaseType_t (* FOnTCPReceive_t )( Socket_t xSocket,
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void * pData,
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size_t xLength );
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typedef void (* FOnTCPSent_t )( Socket_t xSocket,
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size_t xLength );
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#else
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typedef BaseType_t (* FOnTCPReceive_t )( Socket_t,
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void *,
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size_t );
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typedef void (* FOnTCPSent_t )( Socket_t,
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size_t );
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#endif /* ifdef __COVERITY__ */
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/*
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* Reception handler for a UDP socket
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* A user-proved function will be called on reception of a message
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* If the handler returns a positive number, the messages will not be stored
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*/
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#ifdef __COVERITY__
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typedef BaseType_t (* FOnUDPReceive_t ) ( Socket_t xSocket,
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void * pData,
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size_t xLength,
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const struct freertos_sockaddr * pxFrom,
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const struct freertos_sockaddr * pxDest );
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typedef void (* FOnUDPSent_t )( Socket_t xSocket,
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size_t xLength );
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#else
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typedef BaseType_t (* FOnUDPReceive_t ) ( Socket_t,
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void *,
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size_t,
|
|
const struct freertos_sockaddr *,
|
|
const struct freertos_sockaddr * );
|
|
typedef void (* FOnUDPSent_t )( Socket_t,
|
|
size_t );
|
|
#endif /* ifdef __COVERITY__ */
|
|
|
|
typedef union xTCP_UDP_HANDLER
|
|
{
|
|
FOnConnected_t pxOnTCPConnected; /* FREERTOS_SO_TCP_CONN_HANDLER */
|
|
FOnTCPReceive_t pxOnTCPReceive; /* FREERTOS_SO_TCP_RECV_HANDLER */
|
|
FOnTCPSent_t pxOnTCPSent; /* FREERTOS_SO_TCP_SENT_HANDLER */
|
|
FOnUDPReceive_t pxOnUDPReceive; /* FREERTOS_SO_UDP_RECV_HANDLER */
|
|
FOnUDPSent_t pxOnUDPSent; /* FREERTOS_SO_UDP_SENT_HANDLER */
|
|
} F_TCP_UDP_Handler_t;
|
|
#endif /* ( ipconfigUSE_CALLBACKS != 0 ) */
|
|
|
|
BaseType_t FreeRTOS_setsockopt( Socket_t xSocket,
|
|
int32_t lLevel,
|
|
int32_t lOptionName,
|
|
const void * pvOptionValue,
|
|
size_t uxOptionLength );
|
|
BaseType_t FreeRTOS_closesocket( Socket_t xSocket );
|
|
|
|
/* The following function header should be placed in FreeRTOS_DNS.h.
|
|
* It is kept here because some applications expect it in FreeRTOS_Sockets.h.*/
|
|
#ifndef __COVERITY__
|
|
uint32_t FreeRTOS_gethostbyname( const char * pcHostName );
|
|
#endif
|
|
|
|
BaseType_t FreeRTOS_inet_pton( BaseType_t xAddressFamily,
|
|
const char * pcSource,
|
|
void * pvDestination );
|
|
const char * FreeRTOS_inet_ntop( BaseType_t xAddressFamily,
|
|
const void * pvSource,
|
|
char * pcDestination,
|
|
socklen_t uxSize );
|
|
|
|
/* Convert a null-terminated string in dot-decimal-notation (d.d.d.d) to a 32-bit unsigned integer. */
|
|
uint32_t FreeRTOS_inet_addr( const char * pcIPAddress );
|
|
|
|
BaseType_t FreeRTOS_inet_pton4( const char * pcSource,
|
|
void * pvDestination );
|
|
const char * FreeRTOS_inet_ntop4( const void * pvSource,
|
|
char * pcDestination,
|
|
socklen_t uxSize );
|
|
|
|
|
|
/*
|
|
* For the web server: borrow the circular Rx buffer for inspection
|
|
* HTML driver wants to see if a sequence of 13/10/13/10 is available
|
|
*/
|
|
const struct xSTREAM_BUFFER * FreeRTOS_get_rx_buf( ConstSocket_t xSocket );
|
|
|
|
void FreeRTOS_netstat( void );
|
|
|
|
#if ipconfigSUPPORT_SELECT_FUNCTION == 1
|
|
|
|
/* For FD_SET and FD_CLR, a combination of the following bits can be used: */
|
|
|
|
typedef enum eSELECT_EVENT
|
|
{
|
|
eSELECT_READ = 0x0001,
|
|
eSELECT_WRITE = 0x0002,
|
|
eSELECT_EXCEPT = 0x0004,
|
|
eSELECT_INTR = 0x0008,
|
|
eSELECT_ALL = 0x000F,
|
|
/* Reserved for internal use: */
|
|
eSELECT_CALL_IP = 0x0010,
|
|
/* end */
|
|
} eSelectEvent_t;
|
|
|
|
SocketSet_t FreeRTOS_CreateSocketSet( void );
|
|
void FreeRTOS_DeleteSocketSet( SocketSet_t xSocketSet );
|
|
void FreeRTOS_FD_SET( Socket_t xSocket,
|
|
SocketSet_t xSocketSet,
|
|
EventBits_t xBitsToSet );
|
|
void FreeRTOS_FD_CLR( Socket_t xSocket,
|
|
SocketSet_t xSocketSet,
|
|
EventBits_t xBitsToClear );
|
|
EventBits_t FreeRTOS_FD_ISSET( Socket_t xSocket,
|
|
SocketSet_t xSocketSet );
|
|
BaseType_t FreeRTOS_select( SocketSet_t xSocketSet,
|
|
TickType_t xBlockTimeTicks );
|
|
|
|
#endif /* ipconfigSUPPORT_SELECT_FUNCTION */
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* FREERTOS_SOCKETS_H */
|