PreVerify/mqtt/paho.mqtt.c/SocketBuffer.h

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2024-09-09 19:18:28 +08:00
/*******************************************************************************
* Copyright (c) 2009, 2022 IBM Corp., Ian Craggs and others
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* and Eclipse Distribution License v1.0 which accompany this distribution.
*
* The Eclipse Public License is available at
* https://www.eclipse.org/legal/epl-2.0/
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Ian Craggs - initial API and implementation and/or initial documentation
* Ian Craggs, Allan Stockdill-Mander - SSL updates
*******************************************************************************/
#if !defined(SOCKETBUFFER_H)
#define SOCKETBUFFER_H
#include "Socket.h"
#if defined(OPENSSL)
#include <openssl/ssl.h>
#endif
#if defined(_WIN32) || defined(_WIN64)
typedef WSABUF iobuf;
#else
typedef struct iovec iobuf;
#endif
typedef struct
{
SOCKET socket;
unsigned int index;
size_t headerlen;
char fixed_header[5]; /**< header plus up to 4 length bytes */
size_t buflen, /**< total length of the buffer */
datalen; /**< current length of data in buf */
char* buf;
} socket_queue;
typedef struct
{
SOCKET socket;
int count;
size_t total;
#if defined(OPENSSL)
SSL* ssl;
#endif
size_t bytes;
iobuf iovecs[5];
int frees[5];
} pending_writes;
#define SOCKETBUFFER_COMPLETE 0
#if !defined(SOCKET_ERROR)
#define SOCKET_ERROR -1
#endif
#define SOCKETBUFFER_INTERRUPTED -22 /* must be the same value as TCPSOCKET_INTERRUPTED */
int SocketBuffer_initialize(void);
void SocketBuffer_terminate(void);
void SocketBuffer_cleanup(SOCKET socket);
char* SocketBuffer_getQueuedData(SOCKET socket, size_t bytes, size_t* actual_len);
int SocketBuffer_getQueuedChar(SOCKET socket, char* c);
void SocketBuffer_interrupted(SOCKET socket, size_t actual_len);
char* SocketBuffer_complete(SOCKET socket);
void SocketBuffer_queueChar(SOCKET socket, char c);
#if defined(OPENSSL)
int SocketBuffer_pendingWrite(SOCKET socket, SSL* ssl, int count, iobuf* iovecs, int* frees, size_t total, size_t bytes);
#else
int SocketBuffer_pendingWrite(SOCKET socket, int count, iobuf* iovecs, int* frees, size_t total, size_t bytes);
#endif
pending_writes* SocketBuffer_getWrite(SOCKET socket);
int SocketBuffer_writeComplete(SOCKET socket);
pending_writes* SocketBuffer_updateWrite(SOCKET socket, char* topic, char* payload);
#endif