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af9619da3e
Sessions using client certs are huge (more than 1 kB) and do not fit
in session cache, or require a huge cache.
In this new implementation sshcachesize set a number of available blocks
instead a number of available sessions.
Each block is large enough (128 bytes) to store a simple session (without
client certs).
Huge sessions will take multiple blocks depending on client certificate size.
Note: some unused code for session sync with remote peers was temporarily
removed.
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
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* shctx.h - shared context management functions for SSL
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*
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* Copyright (C) 2011-2012 EXCELIANCE
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*
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* Author: Emeric Brun - emeric@exceliance.fr
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef SHCTX_H
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#define SHCTX_H
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#include <openssl/ssl.h>
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#include <stdint.h>
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#ifndef SHSESS_BLOCK_MIN_SIZE
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#define SHSESS_BLOCK_MIN_SIZE 128
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#endif
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#ifndef SHSESS_MAX_DATA_LEN
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#define SHSESS_MAX_DATA_LEN 4096
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#endif
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#ifndef SHCTX_DEFAULT_SIZE
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#define SHCTX_DEFAULT_SIZE 20000
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#endif
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#ifndef SHCTX_APPNAME
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#define SHCTX_APPNAME "haproxy"
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#endif
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/* Allocate shared memory context.
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* <size> is the number of allocated blocks into cache (default 128 bytes)
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* A block is large enough to contain a classic session (without client cert)
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* If <size> is set less or equal to 0, SHCTX_DEFAULT_SIZE is used.
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* Set <use_shared_memory> to 1 to use a mapped shared memory instead
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* of private. (ignored if compiled with USE_PRIVATE_CACHE=1).
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* Returns: -1 on alloc failure, <size> if it performs context alloc,
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* and 0 if cache is already allocated.
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*/
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int shared_context_init(int size, int use_shared_memory);
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/* Set shared cache callbacks on an ssl context.
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* Set session cache mode to server and disable openssl internal cache.
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* Shared context MUST be firstly initialized */
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void shared_context_set_cache(SSL_CTX *ctx);
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#endif /* SHCTX_H */
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