libwebsockets/lib/private-libwebsockets.h

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/*
* libwebsockets - small server side websockets and web server implementation
*
* Copyright (C) 2010 - 2015 Andy Green <andy@warmcat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation:
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
CMake support + fixed windows build. - Finalized CMake support (tested on windows only so far). - Uses a generated lws_config.h that is included in private-libwebsocket to pass defines, only used if CMAKE_BUILD is set. - Support for SSL on Windows. - Initial support for CyaSSL replacement of OpenSSL (This has been added to my older CMake-fork but haven't been tested on this version yet). - Fixed windows build (see below for details). - Fixed at least the 32-bit Debug build for the existing Visual Studio Project. (Not to keen fixing all the others when we have CMake support anyway (which can generate much better project files)...) - BUGFIXES: - handshake.c - used C99 definition of handshake_0405 function - libwebsocket.c - syslog not available on windows, put in ifdefs. - Fixed previous known crash bug on Windows where WSAPoll in Ws2_32.dll would not be present, causing the poll function pointer being set to NULL. - Uninitialized variable context->listen_service_extraseen would result in stack overflow because of infinite recursion. Fixed by initializing in libwebsocket_create_context - SO_REUSADDR means something different on Windows compared to Unix. - Setting a socket to nonblocking is done differently on Windows. (This should probably broken out into a helper function instead) - lwsl_emit_syslog -> lwsl_emit_stderr on Windows. - private-libwebsocket.h - PATH_MAX is not available on Windows, define as MAX_PATH - Always define LWS_NO_DAEMONIZE on windows. - Don't define lws_latency as inline that does nothing. inline is not support by the Microsoft compiler, replaced with an empty define instead. (It's __inline in MSVC) - server.c - Fixed nonblock call on windows - test-ping.c - Don't use C99 features (Microsoft compiler does not support it). - Move non-win32 headers into ifdefs. - Skip use of sighandler on Windows. - test-server.c - ifdef syslog parts on Windows.
2013-02-06 15:26:58 +09:00
#include "lws_config.h"
#include "lws_config_private.h"
#ifdef LWS_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
CMake support + fixed windows build. - Finalized CMake support (tested on windows only so far). - Uses a generated lws_config.h that is included in private-libwebsocket to pass defines, only used if CMAKE_BUILD is set. - Support for SSL on Windows. - Initial support for CyaSSL replacement of OpenSSL (This has been added to my older CMake-fork but haven't been tested on this version yet). - Fixed windows build (see below for details). - Fixed at least the 32-bit Debug build for the existing Visual Studio Project. (Not to keen fixing all the others when we have CMake support anyway (which can generate much better project files)...) - BUGFIXES: - handshake.c - used C99 definition of handshake_0405 function - libwebsocket.c - syslog not available on windows, put in ifdefs. - Fixed previous known crash bug on Windows where WSAPoll in Ws2_32.dll would not be present, causing the poll function pointer being set to NULL. - Uninitialized variable context->listen_service_extraseen would result in stack overflow because of infinite recursion. Fixed by initializing in libwebsocket_create_context - SO_REUSADDR means something different on Windows compared to Unix. - Setting a socket to nonblocking is done differently on Windows. (This should probably broken out into a helper function instead) - lwsl_emit_syslog -> lwsl_emit_stderr on Windows. - private-libwebsocket.h - PATH_MAX is not available on Windows, define as MAX_PATH - Always define LWS_NO_DAEMONIZE on windows. - Don't define lws_latency as inline that does nothing. inline is not support by the Microsoft compiler, replaced with an empty define instead. (It's __inline in MSVC) - server.c - Fixed nonblock call on windows - test-ping.c - Don't use C99 features (Microsoft compiler does not support it). - Move non-win32 headers into ifdefs. - Skip use of sighandler on Windows. - test-server.c - ifdef syslog parts on Windows.
2013-02-06 15:26:58 +09:00
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
2014-03-30 10:19:23 +02:00
#include <time.h>
#include <ctype.h>
#include <limits.h>
#include <stdarg.h>
#include <assert.h>
#ifdef LWS_HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#if defined(WIN32) || defined(_WIN32)
#if (WINVER < 0x0501)
#undef WINVER
#undef _WIN32_WINNT
#define WINVER 0x0501
#define _WIN32_WINNT WINVER
#endif
CMake support + fixed windows build. - Finalized CMake support (tested on windows only so far). - Uses a generated lws_config.h that is included in private-libwebsocket to pass defines, only used if CMAKE_BUILD is set. - Support for SSL on Windows. - Initial support for CyaSSL replacement of OpenSSL (This has been added to my older CMake-fork but haven't been tested on this version yet). - Fixed windows build (see below for details). - Fixed at least the 32-bit Debug build for the existing Visual Studio Project. (Not to keen fixing all the others when we have CMake support anyway (which can generate much better project files)...) - BUGFIXES: - handshake.c - used C99 definition of handshake_0405 function - libwebsocket.c - syslog not available on windows, put in ifdefs. - Fixed previous known crash bug on Windows where WSAPoll in Ws2_32.dll would not be present, causing the poll function pointer being set to NULL. - Uninitialized variable context->listen_service_extraseen would result in stack overflow because of infinite recursion. Fixed by initializing in libwebsocket_create_context - SO_REUSADDR means something different on Windows compared to Unix. - Setting a socket to nonblocking is done differently on Windows. (This should probably broken out into a helper function instead) - lwsl_emit_syslog -> lwsl_emit_stderr on Windows. - private-libwebsocket.h - PATH_MAX is not available on Windows, define as MAX_PATH - Always define LWS_NO_DAEMONIZE on windows. - Don't define lws_latency as inline that does nothing. inline is not support by the Microsoft compiler, replaced with an empty define instead. (It's __inline in MSVC) - server.c - Fixed nonblock call on windows - test-ping.c - Don't use C99 features (Microsoft compiler does not support it). - Move non-win32 headers into ifdefs. - Skip use of sighandler on Windows. - test-server.c - ifdef syslog parts on Windows.
2013-02-06 15:26:58 +09:00
#define LWS_NO_DAEMONIZE
#define LWS_ERRNO WSAGetLastError()
#define LWS_EAGAIN WSAEWOULDBLOCK
#define LWS_EALREADY WSAEALREADY
#define LWS_EINPROGRESS WSAEINPROGRESS
#define LWS_EINTR WSAEINTR
#define LWS_EISCONN WSAEISCONN
#define LWS_EWOULDBLOCK WSAEWOULDBLOCK
#define LWS_POLLHUP (FD_CLOSE)
#define LWS_POLLIN (FD_READ | FD_ACCEPT)
#define LWS_POLLOUT (FD_WRITE)
2014-03-29 08:25:58 +01:00
#define MSG_NOSIGNAL 0
#define SHUT_RDWR SD_BOTH
#define SOL_TCP IPPROTO_TCP
CMake support + fixed windows build. - Finalized CMake support (tested on windows only so far). - Uses a generated lws_config.h that is included in private-libwebsocket to pass defines, only used if CMAKE_BUILD is set. - Support for SSL on Windows. - Initial support for CyaSSL replacement of OpenSSL (This has been added to my older CMake-fork but haven't been tested on this version yet). - Fixed windows build (see below for details). - Fixed at least the 32-bit Debug build for the existing Visual Studio Project. (Not to keen fixing all the others when we have CMake support anyway (which can generate much better project files)...) - BUGFIXES: - handshake.c - used C99 definition of handshake_0405 function - libwebsocket.c - syslog not available on windows, put in ifdefs. - Fixed previous known crash bug on Windows where WSAPoll in Ws2_32.dll would not be present, causing the poll function pointer being set to NULL. - Uninitialized variable context->listen_service_extraseen would result in stack overflow because of infinite recursion. Fixed by initializing in libwebsocket_create_context - SO_REUSADDR means something different on Windows compared to Unix. - Setting a socket to nonblocking is done differently on Windows. (This should probably broken out into a helper function instead) - lwsl_emit_syslog -> lwsl_emit_stderr on Windows. - private-libwebsocket.h - PATH_MAX is not available on Windows, define as MAX_PATH - Always define LWS_NO_DAEMONIZE on windows. - Don't define lws_latency as inline that does nothing. inline is not support by the Microsoft compiler, replaced with an empty define instead. (It's __inline in MSVC) - server.c - Fixed nonblock call on windows - test-ping.c - Don't use C99 features (Microsoft compiler does not support it). - Move non-win32 headers into ifdefs. - Skip use of sighandler on Windows. - test-server.c - ifdef syslog parts on Windows.
2013-02-06 15:26:58 +09:00
#define compatible_close(fd) closesocket(fd)
#define lws_set_blocking_send(wsi) wsi->sock_send_blocking = TRUE
#define lws_socket_is_valid(x) (!!x)
#define LWS_SOCK_INVALID 0
#include <winsock2.h>
#include <ws2tcpip.h>
#include <windows.h>
2014-04-07 11:28:08 +02:00
#include <tchar.h>
#ifdef LWS_HAVE_IN6ADDR_H
#include <in6addr.h>
#endif
2014-04-07 11:28:08 +02:00
#include <mstcpip.h>
#ifndef __func__
#define __func__ __FUNCTION__
#endif
#ifdef _WIN32_WCE
#define vsnprintf _vsnprintf
#endif
#else /* not windows --> */
2014-03-30 10:19:23 +02:00
#include <fcntl.h>
#include <strings.h>
#include <unistd.h>
#include <sys/types.h>
#ifndef MBED_OPERATORS
#ifndef __cplusplus
#include <errno.h>
#endif
#include <netdb.h>
#include <signal.h>
#include <sys/socket.h>
#ifdef LWS_BUILTIN_GETIFADDRS
#include <getifaddrs.h>
#else
#include <ifaddrs.h>
#endif
2014-09-26 05:39:05 +08:00
#if defined (__ANDROID__)
#include <syslog.h>
#else
#include <sys/syslog.h>
2014-09-26 05:39:05 +08:00
#endif
#include <sys/un.h>
#include <sys/socket.h>
#include <netdb.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <poll.h>
#ifdef LWS_USE_LIBEV
#include <ev.h>
#endif /* LWS_USE_LIBEV */
#include <sys/mman.h>
#endif /* MBED */
#ifndef LWS_NO_FORK
#ifdef LWS_HAVE_SYS_PRCTL_H
#include <sys/prctl.h>
#endif
#endif
#include <sys/time.h>
#define LWS_ERRNO errno
#define LWS_EAGAIN EAGAIN
#define LWS_EALREADY EALREADY
#define LWS_EINPROGRESS EINPROGRESS
#define LWS_EINTR EINTR
#define LWS_EISCONN EISCONN
#define LWS_EWOULDBLOCK EWOULDBLOCK
#define LWS_POLLHUP (POLLHUP|POLLERR)
#define LWS_POLLIN (POLLIN)
#define LWS_POLLOUT (POLLOUT)
#define compatible_close(fd) close(fd)
#define lws_set_blocking_send(wsi)
#ifdef MBED_OPERATORS
#define lws_socket_is_valid(x) ((x) != NULL)
#define LWS_SOCK_INVALID (NULL)
#else
#define lws_socket_is_valid(x) (x >= 0)
#define LWS_SOCK_INVALID (-1)
#endif
#endif
#ifndef LWS_HAVE_BZERO
#ifndef bzero
#define bzero(b, len) (memset((b), '\0', (len)), (void) 0)
#endif
#endif
#ifndef LWS_HAVE_STRERROR
#define strerror(x) ""
#endif
#ifdef LWS_OPENSSL_SUPPORT
#ifdef USE_WOLFSSL
2015-08-09 22:56:32 +02:00
#ifdef USE_OLD_CYASSL
#include <cyassl/openssl/ssl.h>
#include <cyassl/error-ssl.h>
#else
#include <wolfssl/openssl/ssl.h>
#include <wolfssl/error-ssl.h>
2015-08-09 22:56:32 +02:00
#endif /* not USE_OLD_CYASSL */
#else
#include <openssl/ssl.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include <openssl/md5.h>
#include <openssl/sha.h>
#endif /* not USE_WOLFSSL */
#endif
#include "libwebsockets.h"
#if defined(MBED_OPERATORS)
#undef compatible_close
#define compatible_close(fd) mbed3_delete_tcp_stream_socket(fd)
#ifndef BIG_ENDIAN
#define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
#endif
#ifndef LITTLE_ENDIAN
#define LITTLE_ENDIAN 1234
#endif
#ifndef BYTE_ORDER
#define BYTE_ORDER LITTLE_ENDIAN
#endif
#endif
#if defined(WIN32) || defined(_WIN32)
#ifndef BIG_ENDIAN
#define BIG_ENDIAN 4321 /* to show byte order (taken from gcc) */
#endif
#ifndef LITTLE_ENDIAN
#define LITTLE_ENDIAN 1234
#endif
#ifndef BYTE_ORDER
#define BYTE_ORDER LITTLE_ENDIAN
#endif
#ifndef u_int64_t
typedef unsigned __int64 u_int64_t;
#endif
#undef __P
#ifndef __P
#if __STDC__
#define __P(protos) protos
#else
#define __P(protos) ()
#endif
#endif
#else
#include <sys/stat.h>
#include <sys/cdefs.h>
#include <sys/time.h>
#if defined(__APPLE__)
#include <machine/endian.h>
#elif defined(__FreeBSD__)
#include <sys/endian.h>
#elif defined(__linux__)
#include <endian.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
#include <stddef.h>
#ifndef container_of
#define container_of(P,T,M) ((T *)((char *)(P) - offsetof(T, M)))
#endif
2014-09-16 14:05:13 +04:00
#if defined(__QNX__)
#include <gulliver.h>
#if defined(__LITTLEENDIAN__)
#define BYTE_ORDER __LITTLEENDIAN__
#define LITTLE_ENDIAN __LITTLEENDIAN__
#define BIG_ENDIAN 4321 /* to show byte order (taken from gcc); for suppres warning that BIG_ENDIAN is not defined. */
#endif
#if defined(__BIGENDIAN__)
#define BYTE_ORDER __BIGENDIAN__
#define LITTLE_ENDIAN 1234 /* to show byte order (taken from gcc); for suppres warning that LITTLE_ENDIAN is not defined. */
#define BIG_ENDIAN __BIGENDIAN__
#endif
#endif
#if !defined(BYTE_ORDER)
# define BYTE_ORDER __BYTE_ORDER
#endif
#if !defined(LITTLE_ENDIAN)
# define LITTLE_ENDIAN __LITTLE_ENDIAN
#endif
#if !defined(BIG_ENDIAN)
# define BIG_ENDIAN __BIG_ENDIAN
#endif
#endif
/*
* Mac OSX as well as iOS do not define the MSG_NOSIGNAL flag,
* but happily have something equivalent in the SO_NOSIGPIPE flag.
*/
#ifdef __APPLE__
#define MSG_NOSIGNAL SO_NOSIGPIPE
#endif
#ifdef _WIN32
#ifndef FD_HASHTABLE_MODULUS
#define FD_HASHTABLE_MODULUS 32
#endif
#endif
#ifndef LWS_MAX_HEADER_LEN
2013-02-10 18:02:31 +08:00
#define LWS_MAX_HEADER_LEN 1024
#endif
#ifndef LWS_MAX_PROTOCOLS
#define LWS_MAX_PROTOCOLS 5
#endif
#ifndef LWS_MAX_EXTENSIONS_ACTIVE
#define LWS_MAX_EXTENSIONS_ACTIVE 3
#endif
#ifndef SPEC_LATEST_SUPPORTED
#define SPEC_LATEST_SUPPORTED 13
#endif
#ifndef AWAITING_TIMEOUT
#define AWAITING_TIMEOUT 5
#endif
#ifndef CIPHERS_LIST_STRING
#define CIPHERS_LIST_STRING "DEFAULT"
#endif
#ifndef LWS_SOMAXCONN
#define LWS_SOMAXCONN SOMAXCONN
#endif
#define MAX_WEBSOCKET_04_KEY_LEN 128
#define LWS_MAX_SOCKET_IO_BUF 4096
#ifndef SYSTEM_RANDOM_FILEPATH
#define SYSTEM_RANDOM_FILEPATH "/dev/urandom"
#endif
#ifndef LWS_MAX_ZLIB_CONN_BUFFER
#define LWS_MAX_ZLIB_CONN_BUFFER (64 * 1024)
#endif
/*
* if not in a connection storm, check for incoming
* connections this many normal connection services
*/
#define LWS_lserv_mod 10
enum lws_websocket_opcodes_07 {
LWSWSOPC_CONTINUATION = 0,
LWSWSOPC_TEXT_FRAME = 1,
LWSWSOPC_BINARY_FRAME = 2,
LWSWSOPC_NOSPEC__MUX = 7,
/* control extensions 8+ */
LWSWSOPC_CLOSE = 8,
LWSWSOPC_PING = 9,
LWSWSOPC_PONG = 0xa,
};
enum lws_connection_states {
LWSS_HTTP,
LWSS_HTTP_ISSUING_FILE,
LWSS_HTTP_HEADERS,
LWSS_HTTP_BODY,
LWSS_DEAD_SOCKET,
LWSS_ESTABLISHED,
LWSS_CLIENT_UNCONNECTED,
LWSS_RETURNED_CLOSE_ALREADY,
LWSS_AWAITING_CLOSE_ACK,
LWSS_FLUSHING_STORED_SEND_BEFORE_CLOSE,
LWSS_HTTP2_AWAIT_CLIENT_PREFACE,
LWSS_HTTP2_ESTABLISHED_PRE_SETTINGS,
LWSS_HTTP2_ESTABLISHED,
};
HTTP Version, Keep-alive support, No-copy POST This is a squashed commit from https://github.com/andrew-canaday/libwebsockets, dev/http_keepalive branch (strategies changed a few times, so the commit history is clutteread). This branch is submitted for clarity, but the other can be used as a reference or alternative. * added **enum http_version** to track HTTP/1.0 vs HTTP/1.1 requests * added **enum http_connection_type** to track keep-alive vs close * replaced content_length_seen and body_index with **content_remain** * removed **post_buffer** (see handshake.c modifications) * removed post_buffer free * switch state to WSI_TOKEN_SKIPPING after URI is complete to store version * delete *spill* label (unused) * add vars to track HTTP version and connection type * HTTP version defaults to 1.0 * connection type defaults to 'close' for 1.0, keep-alive for 1.1 * additional checks in **cleanup:** label: * if HTTP version string is present and valid, set enum val appropriately * override connection default with the "Connection:" header, if present * set state to WSI_STATE_HTTP_BODY if content_length > 0 * return 0 on HTTP requests, unless LWS_CALLBACK_HTTP indicates otherwise * add vars to track remaining content_length and body chunk size * re-arrange switch case order to facilitate creation of jump-table * added new labels: * **read_ok**: normal location reach on break from switch; just return 0 * **http_complete**: check for keep-alive + init state, mode, hdr table * **http_new**: jump location for keep-alive when http_complete sees len>0 * after libwebsocket_parse, jump to one of those labels based on state * POST body handling: * don't bother iterating over input byte-by-byte or using memcpy * just pass the relevant portion of the context->service_buffer to callback
2014-07-13 01:07:36 -04:00
enum http_version {
HTTP_VERSION_1_0,
HTTP_VERSION_1_1,
};
enum http_connection_type {
HTTP_CONNECTION_CLOSE,
HTTP_CONNECTION_KEEP_ALIVE
};
enum lws_pending_protocol_send {
LWS_PPS_NONE,
LWS_PPS_HTTP2_MY_SETTINGS,
LWS_PPS_HTTP2_ACK_SETTINGS,
LWS_PPS_HTTP2_PONG,
};
enum lws_rx_parse_state {
LWS_RXPS_NEW,
LWS_RXPS_04_MASK_NONCE_1,
LWS_RXPS_04_MASK_NONCE_2,
LWS_RXPS_04_MASK_NONCE_3,
LWS_RXPS_04_FRAME_HDR_1,
LWS_RXPS_04_FRAME_HDR_LEN,
LWS_RXPS_04_FRAME_HDR_LEN16_2,
LWS_RXPS_04_FRAME_HDR_LEN16_1,
LWS_RXPS_04_FRAME_HDR_LEN64_8,
LWS_RXPS_04_FRAME_HDR_LEN64_7,
LWS_RXPS_04_FRAME_HDR_LEN64_6,
LWS_RXPS_04_FRAME_HDR_LEN64_5,
LWS_RXPS_04_FRAME_HDR_LEN64_4,
LWS_RXPS_04_FRAME_HDR_LEN64_3,
LWS_RXPS_04_FRAME_HDR_LEN64_2,
LWS_RXPS_04_FRAME_HDR_LEN64_1,
LWS_RXPS_07_COLLECT_FRAME_KEY_1,
LWS_RXPS_07_COLLECT_FRAME_KEY_2,
LWS_RXPS_07_COLLECT_FRAME_KEY_3,
LWS_RXPS_07_COLLECT_FRAME_KEY_4,
LWS_RXPS_PAYLOAD_UNTIL_LENGTH_EXHAUSTED
};
enum connection_mode {
LWSCM_HTTP_SERVING,
LWSCM_HTTP_SERVING_ACCEPTED, /* actual HTTP service going on */
LWSCM_PRE_WS_SERVING_ACCEPT,
LWSCM_WS_SERVING,
LWSCM_WS_CLIENT,
LWSCM_HTTP2_SERVING,
/* transient, ssl delay hiding */
LWSCM_SSL_ACK_PENDING,
/* transient modes */
LWSCM_WSCL_WAITING_CONNECT,
LWSCM_WSCL_WAITING_PROXY_REPLY,
LWSCM_WSCL_ISSUE_HANDSHAKE,
LWSCM_WSCL_ISSUE_HANDSHAKE2,
LWSCM_WSCL_WAITING_SSL,
LWSCM_WSCL_WAITING_SERVER_REPLY,
LWSCM_WSCL_WAITING_EXTENSION_CONNECT,
LWSCM_WSCL_PENDING_CANDIDATE_CHILD,
/* special internal types */
LWSCM_SERVER_LISTENER,
};
enum {
LWS_RXFLOW_ALLOW = (1 << 0),
LWS_RXFLOW_PENDING_CHANGE = (1 << 1),
};
struct lws_protocols;
struct lws;
#ifdef LWS_USE_LIBEV
struct lws_io_watcher {
struct ev_io watcher;
struct lws_context* context;
};
struct lws_signal_watcher {
struct ev_signal watcher;
struct lws_context* context;
};
#endif /* LWS_USE_LIBEV */
#ifdef _WIN32
#define LWS_FD_HASH(fd) ((fd ^ (fd >> 8) ^ (fd >> 16)) % FD_HASHTABLE_MODULUS)
struct lws_fd_hashtable {
struct lws **wsi;
int length;
};
#endif
struct lws_context {
#ifdef _WIN32
WSAEVENT *events;
#endif
struct lws_pollfd *fds;
#ifdef _WIN32
/* different implementation between unix and windows */
struct lws_fd_hashtable fd_hashtable[FD_HASHTABLE_MODULUS];
#else
struct lws **lws_lookup; /* fd to wsi */
#endif
int fds_count;
#ifdef LWS_USE_LIBEV
struct ev_loop* io_loop;
struct lws_io_watcher w_accept;
struct lws_signal_watcher w_sigint;
lws_ev_signal_cb* lws_ev_sigint_cb;
int use_ev_sigint;
#endif /* LWS_USE_LIBEV */
int max_fds;
int listen_port;
const char *iface;
char http_proxy_address[128];
char canonical_hostname[128];
char proxy_basic_auth_token[128];
unsigned int http_proxy_port;
unsigned int options;
time_t last_timeout_check_s;
/*
* usable by anything in the service code, but only if the scope
* does not last longer than the service action (since next service
* of any socket can likewise use it and overwrite)
*/
unsigned char serv_buf[LWS_MAX_SOCKET_IO_BUF];
int started_with_parent;
int fd_random;
int lserv_mod;
int lserv_count;
lws_sockfd_type lserv_fd;
int lserv_seen;
/*
* set to the Thread ID that's doing the service loop just before entry
* to poll indicates service thread likely idling in poll()
* volatile because other threads may check it as part of processing
* for pollfd event change.
*/
volatile int service_tid;
#ifndef _WIN32
int dummy_pipe_fds[2];
#endif
int ka_time;
int ka_probes;
int ka_interval;
#ifdef LWS_LATENCY
unsigned long worst_latency;
char worst_latency_info[256];
#endif
#ifdef LWS_OPENSSL_SUPPORT
int use_ssl;
int allow_non_ssl_on_ssl_port;
unsigned int user_supplied_ssl_ctx:1;
SSL_CTX *ssl_ctx;
SSL_CTX *ssl_client_ctx;
struct lws *pending_read_list; /* linked list */
#define lws_ssl_anybody_has_buffered_read(ctx) (ctx->use_ssl && ctx->pending_read_list)
#else
#define lws_ssl_anybody_has_buffered_read(ctx) (0)
#endif
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const struct lws_protocols *protocols;
int count_protocols;
#ifndef LWS_NO_EXTENSIONS
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const struct lws_extension *extensions;
#endif
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const struct lws_token_limits *token_limits;
void *user_space;
struct lws_plat_file_ops fops;
unsigned int being_destroyed:1;
};
enum {
LWS_EV_READ = (1 << 0),
LWS_EV_WRITE = (1 << 1),
LWS_EV_START = (1 << 2),
LWS_EV_STOP = (1 << 3),
};
#ifdef LWS_USE_LIBEV
#define LWS_LIBEV_ENABLED(context) (context->options & LWS_SERVER_OPTION_LIBEV)
LWS_EXTERN void lws_feature_status_libev(struct lws_context_creation_info *info);
LWS_EXTERN void
lws_libev_accept(struct lws *new_wsi, lws_sockfd_type accept_fd);
LWS_EXTERN void
lws_libev_io(struct lws *wsi, int flags);
LWS_EXTERN int
lws_libev_init_fd_table(struct lws_context *context);
LWS_EXTERN void
lws_libev_run(const struct lws_context *context);
#else
#define LWS_LIBEV_ENABLED(context) (0)
#ifdef LWS_POSIX
#define lws_feature_status_libev(_a) \
lwsl_notice("libev support not compiled in\n")
#else
#define lws_feature_status_libev(_a)
#endif
#define lws_libev_accept(_a, _b) ((void) 0)
#define lws_libev_io(_a, _b) ((void) 0)
#define lws_libev_init_fd_table(_a) (0)
#define lws_libev_run(_a) ((void) 0)
#endif
#ifdef LWS_USE_IPV6
#define LWS_IPV6_ENABLED(context) \
(!(context->options & LWS_SERVER_OPTION_DISABLE_IPV6))
#else
#define LWS_IPV6_ENABLED(context) (0)
#endif
enum uri_path_states {
URIPS_IDLE,
URIPS_SEEN_SLASH,
URIPS_SEEN_SLASH_DOT,
URIPS_SEEN_SLASH_DOT_DOT,
};
enum uri_esc_states {
URIES_IDLE,
URIES_SEEN_PERCENT,
URIES_SEEN_PERCENT_H1,
};
/*
* This is totally opaque to code using the library. It's exported as a
* forward-reference pointer-only declaration; the user can use the pointer with
* other APIs to get information out of it.
*/
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struct lws_fragments {
unsigned short offset;
unsigned short len;
unsigned char nfrag; /* which ah->frag[] continues this content, or 0 */
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};
/* notice that these union members:
*
* hdr
* http
* http2
*
* all have a pointer to allocated_headers struct as their first member.
*
* It means for allocated_headers access, the three union paths can all be
2015-12-03 15:55:11 +02:00
* used interchangeably to access the same data
*/
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struct allocated_headers {
unsigned char nfrag;
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unsigned short pos;
/*
* for each recognized token, frag_index says which frag[] his data
* starts in (0 means the token did not appear)
* the actual header data gets dumped as it comes in, into data[]
*/
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unsigned char frag_index[WSI_TOKEN_COUNT];
/*
* the randomly ordered fragments, indexed by frag_index and
* lws_fragments->nfrag for continuation.
*/
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struct lws_fragments frags[WSI_TOKEN_COUNT * 2];
char data[LWS_MAX_HEADER_LEN];
#ifndef LWS_NO_CLIENT
char initial_handshake_hash_base64[30];
unsigned short c_port;
#endif
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};
struct _lws_http_mode_related {
/* MUST be first in struct */
struct allocated_headers *ah; /* mirroring _lws_header_related */
lws_filefd_type fd;
unsigned long filepos;
unsigned long filelen;
HTTP Version, Keep-alive support, No-copy POST This is a squashed commit from https://github.com/andrew-canaday/libwebsockets, dev/http_keepalive branch (strategies changed a few times, so the commit history is clutteread). This branch is submitted for clarity, but the other can be used as a reference or alternative. * added **enum http_version** to track HTTP/1.0 vs HTTP/1.1 requests * added **enum http_connection_type** to track keep-alive vs close * replaced content_length_seen and body_index with **content_remain** * removed **post_buffer** (see handshake.c modifications) * removed post_buffer free * switch state to WSI_TOKEN_SKIPPING after URI is complete to store version * delete *spill* label (unused) * add vars to track HTTP version and connection type * HTTP version defaults to 1.0 * connection type defaults to 'close' for 1.0, keep-alive for 1.1 * additional checks in **cleanup:** label: * if HTTP version string is present and valid, set enum val appropriately * override connection default with the "Connection:" header, if present * set state to WSI_STATE_HTTP_BODY if content_length > 0 * return 0 on HTTP requests, unless LWS_CALLBACK_HTTP indicates otherwise * add vars to track remaining content_length and body chunk size * re-arrange switch case order to facilitate creation of jump-table * added new labels: * **read_ok**: normal location reach on break from switch; just return 0 * **http_complete**: check for keep-alive + init state, mode, hdr table * **http_new**: jump location for keep-alive when http_complete sees len>0 * after libwebsocket_parse, jump to one of those labels based on state * POST body handling: * don't bother iterating over input byte-by-byte or using memcpy * just pass the relevant portion of the context->service_buffer to callback
2014-07-13 01:07:36 -04:00
enum http_version request_version;
enum http_connection_type connection_type;
unsigned int content_length;
unsigned int content_remain;
};
#ifdef LWS_USE_HTTP2
enum lws_http2_settings {
LWS_HTTP2_SETTINGS__HEADER_TABLE_SIZE = 1,
LWS_HTTP2_SETTINGS__ENABLE_PUSH,
LWS_HTTP2_SETTINGS__MAX_CONCURRENT_STREAMS,
LWS_HTTP2_SETTINGS__INITIAL_WINDOW_SIZE,
LWS_HTTP2_SETTINGS__MAX_FRAME_SIZE,
LWS_HTTP2_SETTINGS__MAX_HEADER_LIST_SIZE,
LWS_HTTP2_SETTINGS__COUNT /* always last */
};
enum lws_http2_wellknown_frame_types {
LWS_HTTP2_FRAME_TYPE_DATA,
LWS_HTTP2_FRAME_TYPE_HEADERS,
LWS_HTTP2_FRAME_TYPE_PRIORITY,
LWS_HTTP2_FRAME_TYPE_RST_STREAM,
LWS_HTTP2_FRAME_TYPE_SETTINGS,
LWS_HTTP2_FRAME_TYPE_PUSH_PROMISE,
LWS_HTTP2_FRAME_TYPE_PING,
LWS_HTTP2_FRAME_TYPE_GOAWAY,
LWS_HTTP2_FRAME_TYPE_WINDOW_UPDATE,
LWS_HTTP2_FRAME_TYPE_CONTINUATION,
LWS_HTTP2_FRAME_TYPE_COUNT /* always last */
};
enum lws_http2_flags {
LWS_HTTP2_FLAG_END_STREAM = 1,
LWS_HTTP2_FLAG_END_HEADERS = 4,
LWS_HTTP2_FLAG_PADDED = 8,
LWS_HTTP2_FLAG_PRIORITY = 0x20,
LWS_HTTP2_FLAG_SETTINGS_ACK = 1,
};
#define LWS_HTTP2_STREAM_ID_MASTER 0
#define LWS_HTTP2_FRAME_HEADER_LENGTH 9
#define LWS_HTTP2_SETTINGS_LENGTH 6
struct http2_settings {
unsigned int setting[LWS_HTTP2_SETTINGS__COUNT];
};
enum http2_hpack_state {
/* optional before first header block */
HPKS_OPT_PADDING,
HKPS_OPT_E_DEPENDENCY,
HKPS_OPT_WEIGHT,
/* header block */
HPKS_TYPE,
HPKS_IDX_EXT,
HPKS_HLEN,
HPKS_HLEN_EXT,
HPKS_DATA,
/* optional after last header block */
HKPS_OPT_DISCARD_PADDING,
};
enum http2_hpack_type {
HPKT_INDEXED_HDR_7,
HPKT_INDEXED_HDR_6_VALUE_INCR,
HPKT_LITERAL_HDR_VALUE_INCR,
HPKT_INDEXED_HDR_4_VALUE,
HPKT_LITERAL_HDR_VALUE,
HPKT_SIZE_5
};
struct hpack_dt_entry {
int token; /* additions that don't map to a token are ignored */
int arg_offset;
int arg_len;
};
struct hpack_dynamic_table {
struct hpack_dt_entry *entries;
char *args;
int pos;
int next;
int num_entries;
int args_length;
};
struct _lws_http2_related {
/*
* having this first lets us also re-use all HTTP union code
* and in turn, http_mode_related has allocated headers in right
* place so we can use the header apis on the wsi directly still
*/
struct _lws_http_mode_related http; /* MUST BE FIRST IN STRUCT */
struct http2_settings my_settings;
struct http2_settings peer_settings;
struct lws *parent_wsi;
struct lws *next_child_wsi;
struct hpack_dynamic_table *hpack_dyn_table;
unsigned int count;
/* frame */
unsigned int length;
unsigned int stream_id;
struct lws *stream_wsi;
unsigned char type;
unsigned char flags;
unsigned char frame_state;
unsigned char padding;
unsigned char ping_payload[8];
unsigned short round_robin_POLLOUT;
unsigned short count_POLLOUT_children;
unsigned int END_STREAM:1;
unsigned int END_HEADERS:1;
unsigned int send_END_STREAM:1;
unsigned int GOING_AWAY;
unsigned int requested_POLLOUT:1;
unsigned int waiting_tx_credit:1;
/* hpack */
enum http2_hpack_state hpack;
enum http2_hpack_type hpack_type;
unsigned int header_index;
unsigned int hpack_len;
unsigned short hpack_pos;
unsigned char hpack_m;
unsigned int hpack_e_dep;
unsigned int huff:1;
unsigned int value:1;
/* negative credit is mandated by the spec */
int tx_credit;
unsigned int my_stream_id;
unsigned int child_count;
int my_priority;
unsigned char initialized;
unsigned char one_setting[LWS_HTTP2_SETTINGS_LENGTH];
};
#define HTTP2_IS_TOPLEVEL_WSI(wsi) (!wsi->u.http2.parent_wsi)
#endif
struct _lws_header_related {
/* MUST be first in struct */
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struct allocated_headers *ah;
short lextable_pos;
unsigned short current_token_limit;
unsigned char parser_state; /* enum lws_token_indexes */
enum uri_path_states ups;
enum uri_esc_states ues;
char esc_stash;
char post_literal_equal;
};
struct _lws_websocket_related {
char *rx_user_buffer;
unsigned int rx_user_buffer_head;
unsigned char mask_nonce[4];
unsigned char frame_mask_index;
unsigned int rx_ubuf_alloc;
size_t rx_packet_length;
unsigned char opcode;
unsigned int final:1;
unsigned char rsv;
unsigned int frame_is_binary:1;
unsigned int all_zero_nonce:1;
short close_reason; /* enum lws_close_status */
unsigned int this_frame_masked:1;
add explicit error for partial send This patch adds code to handle the situation that a prepared user buffer could not all be sent on the socket at once. There are two kinds of situation to handle 1) User code handles it: The connection only has extensions active that do not rewrite the buffer. In this case, the patch caused libwebsocket_write() to simply return the amount of user buffer that was consumed (this is specifically the amount of user buffer used in sending what was accepted, nothing else). So user code can just advance its buffer that much and resume sending when the socket is writable again. This continues the frame rather than starting a new one or new fragment. 2) The connections has extensions active which actually send something quite different than what the user buffer contains, for example a compression extension. In this case, libwebsockets will dynamically malloc a buffer to contain a copy of the remaining unsent data, request notifiction when writeable again, and automatically spill and free this buffer with the highest priority before passing on the writable notification to anything else. For this situation, the call to write will return that it used the whole user buffer, even though part is still rebuffered. This patch should enable libwebsockets to detect the two cases and take the appropriate action. There are also two choices for user code to deal with partial sends. 1) Leave the no_buffer_all_partial_tx member in the protocol struct at zero. The library will dyamically buffer anything you send that did not get completely written to the socket, and automatically spill it next time the socket is writable. You can use this method if your sent frames are relatvely small and unlikely to get truncated anyway. 2) Set the no_buffer_all_partial_tx member in the protocol struct. User code now needs to take care of the return value from libwebsocket_write() and deal with resending the remainder if not all of the requested amount got sent. You should use this method if you are sending large messages and want to maximize throughput and efficiency. Since the new member no_buffer_all_partial_tx will be zero by default, this patch will auto-rebuffer any partial sends by default. That's good for most cases but if you attempt to send large blocks, make sure you follow option 2) above. Signed-off-by: Andy Green <andy.green@linaro.org>
2013-10-17 08:09:19 +08:00
unsigned int inside_frame:1; /* next write will be more of frame */
unsigned int clean_buffer:1; /* buffer not rewritten by extension */
unsigned int payload_is_close:1; /* process as PONG, but it is close */
unsigned char *ping_payload_buf; /* non-NULL if malloc'd */
unsigned int ping_payload_alloc; /* length malloc'd */
unsigned int ping_payload_len;
unsigned char ping_pending_flag;
};
struct lws {
/* lifetime members */
#ifdef LWS_USE_LIBEV
struct lws_io_watcher w_read;
struct lws_io_watcher w_write;
#endif /* LWS_USE_LIBEV */
struct lws_context *context;
const struct lws_protocols *protocol;
#ifndef LWS_NO_EXTENSIONS
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const struct lws_extension *active_extensions[LWS_MAX_EXTENSIONS_ACTIVE];
void *active_extensions_user[LWS_MAX_EXTENSIONS_ACTIVE];
unsigned char count_active_extensions;
unsigned int extension_data_pending:1;
#endif
unsigned char ietf_spec_revision;
enum lws_pending_protocol_send pps;
char mode; /* enum connection_mode */
char state; /* enum lws_connection_states */
char lws_rx_parse_state; /* enum lws_rx_parse_state */
char rx_frame_type; /* enum lws_write_protocol */
unsigned int hdr_parsing_completed:1;
unsigned int user_space_externally_allocated:1;
unsigned int socket_is_permanently_unusable:1;
char pending_timeout; /* enum pending_timeout */
time_t pending_timeout_limit;
lws_sockfd_type sock;
int position_in_fds_table;
#ifdef LWS_LATENCY
unsigned long action_start;
unsigned long latency_start;
#endif
/* rxflow handling */
unsigned char *rxflow_buffer;
int rxflow_len;
int rxflow_pos;
unsigned int rxflow_change_to:2;
/* truncated send handling */
unsigned char *trunc_alloc; /* non-NULL means buffering in progress */
unsigned int trunc_alloc_len; /* size of malloc */
unsigned int trunc_offset; /* where we are in terms of spilling */
unsigned int trunc_len; /* how much is buffered */
void *user_space;
/* members with mutually exclusive lifetimes are unionized */
union u {
struct _lws_http_mode_related http;
#ifdef LWS_USE_HTTP2
struct _lws_http2_related http2;
#endif
struct _lws_header_related hdr;
struct _lws_websocket_related ws;
} u;
#ifdef LWS_OPENSSL_SUPPORT
SSL *ssl;
BIO *client_bio;
struct lws *pending_read_list_prev, *pending_read_list_next;
unsigned int use_ssl:2;
unsigned int upgraded:1;
#endif
#ifdef _WIN32
BOOL sock_send_blocking;
#endif
};
LWS_EXTERN int log_level;
LWS_EXTERN void
lws_close_free_wsi(struct lws *wsi, enum lws_close_status);
LWS_EXTERN int
remove_wsi_socket_from_fds(struct lws *wsi);
LWS_EXTERN int
lws_rxflow_cache(struct lws *wsi, unsigned char *buf, int n, int len);
#ifndef LWS_LATENCY
static inline void
lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
int ret, int completion) {
do {
(void)context; (void)wsi; (void)action; (void)ret;
(void)completion;
} while (0);
}
static inline void
lws_latency_pre(struct lws_context *context, struct lws *wsi) {
do { (void)context; (void)wsi; } while (0);
}
#else
#define lws_latency_pre(_context, _wsi) lws_latency(_context, _wsi, NULL, 0, 0)
extern void
lws_latency(struct lws_context *context, struct lws *wsi, const char *action,
int ret, int completion);
#endif
LWS_EXTERN void
lws_set_protocol_write_pending(struct lws *wsi,
enum lws_pending_protocol_send pend);
LWS_EXTERN int
lws_client_rx_sm(struct lws *wsi, unsigned char c);
LWS_EXTERN int
lws_parse(struct lws *wsi, unsigned char c);
LWS_EXTERN int
lws_http_action(struct lws *wsi);
LWS_EXTERN int
lws_b64_selftest(void);
#if defined(_WIN32) || defined(MBED_OPERATORS)
LWS_EXTERN struct lws *
wsi_from_fd(const struct lws_context *context, lws_sockfd_type fd);
LWS_EXTERN int
insert_wsi(struct lws_context *context, struct lws *wsi);
LWS_EXTERN int
delete_from_fd(struct lws_context *context, lws_sockfd_type fd);
#else
#define wsi_from_fd(A,B) A->lws_lookup[B]
#define insert_wsi(A,B) A->lws_lookup[B->sock]=B
#define delete_from_fd(A,B) A->lws_lookup[B]=0
#endif
LWS_EXTERN int
insert_wsi_socket_into_fds(struct lws_context *context, struct lws *wsi);
LWS_EXTERN int
lws_issue_raw(struct lws *wsi, unsigned char *buf, size_t len);
LWS_EXTERN int
lws_service_timeout_check(struct lws *wsi, unsigned int sec);
LWS_EXTERN struct lws *
lws_client_connect_2(struct lws *wsi);
LWS_EXTERN struct lws *
lws_create_new_server_wsi(struct lws_context *context);
LWS_EXTERN char *
lws_generate_client_handshake(struct lws *wsi, char *pkt);
LWS_EXTERN int
lws_handle_POLLOUT_event(struct lws *wsi, struct lws_pollfd *pollfd);
/*
* EXTENSIONS
*/
#ifndef LWS_NO_EXTENSIONS
LWS_VISIBLE void
lws_context_init_extensions(struct lws_context_creation_info *info,
struct lws_context *context);
LWS_EXTERN int
lws_any_extension_handled(struct lws *wsi,
enum lws_extension_callback_reasons r,
void *v, size_t len);
LWS_EXTERN int
lws_ext_cb_wsi_active_exts(struct lws *wsi, int reason,
void *buf, int len);
LWS_EXTERN int
lws_ext_cb_all_exts(struct lws_context *context,
struct lws *wsi, int reason,
void *arg, int len);
#else
#define lws_any_extension_handled(_a, _b, _c, _d) (0)
#define lws_ext_cb_wsi_active_exts(_a, _b, _c, _d) (0)
#define lws_ext_cb_all_exts(_a, _b, _c, _d, _e) (0)
#define lws_issue_raw_ext_access lws_issue_raw
#define lws_context_init_extensions(_a, _b)
#endif
LWS_EXTERN int
lws_client_interpret_server_handshake(struct lws *wsi);
LWS_EXTERN int
lws_rx_sm(struct lws *wsi, unsigned char c);
LWS_EXTERN int
lws_issue_raw_ext_access(struct lws *wsi, unsigned char *buf, size_t len);
LWS_EXTERN int
_lws_rx_flow_control(struct lws *wsi);
LWS_EXTERN void
lws_union_transition(struct lws *wsi, enum connection_mode mode);
LWS_EXTERN int
user_callback_handle_rxflow(callback_function, struct lws *wsi,
enum lws_callback_reasons reason, void *user,
void *in, size_t len);
#ifdef LWS_USE_HTTP2
LWS_EXTERN struct lws *lws_http2_get_network_wsi(struct lws *wsi);
struct lws * lws_http2_get_nth_child(struct lws *wsi, int n);
LWS_EXTERN int
lws_http2_interpret_settings_payload(struct http2_settings *settings,
unsigned char *buf, int len);
LWS_EXTERN void lws_http2_init(struct http2_settings *settings);
LWS_EXTERN int
lws_http2_parser(struct lws *wsi, unsigned char c);
LWS_EXTERN int lws_http2_do_pps_send(struct lws_context *context,
struct lws *wsi);
LWS_EXTERN int lws_http2_frame_write(struct lws *wsi, int type, int flags,
unsigned int sid, unsigned int len,
unsigned char *buf);
LWS_EXTERN struct lws *
lws_http2_wsi_from_id(struct lws *wsi, unsigned int sid);
LWS_EXTERN int lws_hpack_interpret(struct lws *wsi,
unsigned char c);
LWS_EXTERN int
lws_add_http2_header_by_name(struct lws *wsi,
const unsigned char *name,
const unsigned char *value, int length,
unsigned char **p, unsigned char *end);
LWS_EXTERN int
lws_add_http2_header_by_token(struct lws *wsi,
enum lws_token_indexes token,
const unsigned char *value, int length,
unsigned char **p, unsigned char *end);
LWS_EXTERN int
lws_add_http2_header_status(struct lws *wsi,
unsigned int code, unsigned char **p,
unsigned char *end);
LWS_EXTERN
void lws_http2_configure_if_upgraded(struct lws *wsi);
#else
#define lws_http2_configure_if_upgraded(x)
#endif
LWS_EXTERN int
lws_plat_set_socket_options(struct lws_context *context, lws_sockfd_type fd);
LWS_EXTERN int
lws_allocate_header_table(struct lws *wsi);
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LWS_EXTERN int
lws_free_header_table(struct lws *wsi);
LWS_EXTERN char *
lws_hdr_simple_ptr(struct lws *wsi, enum lws_token_indexes h);
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LWS_EXTERN int
lws_hdr_simple_create(struct lws *wsi, enum lws_token_indexes h, const char *s);
LWS_EXTERN int
lws_ensure_user_space(struct lws *wsi);
LWS_EXTERN int
lws_change_pollfd(struct lws *wsi, int _and, int _or);
#ifndef LWS_NO_SERVER
int lws_context_init_server(struct lws_context_creation_info *info,
struct lws_context *context);
LWS_EXTERN int
handshake_0405(struct lws_context *context, struct lws *wsi);
LWS_EXTERN int
lws_interpret_incoming_packet(struct lws *wsi, unsigned char *buf, size_t len);
LWS_EXTERN void
lws_server_get_canonical_hostname(struct lws_context *context,
struct lws_context_creation_info *info);
#else
#define lws_context_init_server(_a, _b) (0)
#define lws_interpret_incoming_packet(_a, _b, _c) (0)
#define lws_server_get_canonical_hostname(_a, _b)
#endif
#ifndef LWS_NO_DAEMONIZE
LWS_EXTERN int get_daemonize_pid();
#else
#define get_daemonize_pid() (0)
#endif
#if !defined(MBED_OPERATORS)
LWS_EXTERN int
interface_to_sa(struct lws_context *context, const char *ifname,
struct sockaddr_in *addr, size_t addrlen);
#endif
LWS_EXTERN void lwsl_emit_stderr(int level, const char *line);
enum lws_ssl_capable_status {
LWS_SSL_CAPABLE_ERROR = -1,
LWS_SSL_CAPABLE_MORE_SERVICE = -2,
};
#ifndef LWS_OPENSSL_SUPPORT
#define LWS_SSL_ENABLED(context) (0)
#define lws_context_init_server_ssl(_a, _b) (0)
#define lws_ssl_destroy(_a)
#define lws_context_init_http2_ssl(_a)
#define lws_ssl_capable_read lws_ssl_capable_read_no_ssl
#define lws_ssl_capable_write lws_ssl_capable_write_no_ssl
#define lws_ssl_pending lws_ssl_pending_no_ssl
#define lws_server_socket_service_ssl(_a, _b, _c, _d) (0)
#define lws_ssl_close(_a) (0)
#define lws_ssl_context_destroy(_a)
#define lws_ssl_remove_wsi_from_buffered_list(_a)
#else
#define LWS_SSL_ENABLED(context) (context->use_ssl)
LWS_EXTERN int openssl_websocket_private_data_index;
LWS_EXTERN int
lws_ssl_capable_read(struct lws *wsi, unsigned char *buf, int len);
LWS_EXTERN int
lws_ssl_capable_write(struct lws *wsi, unsigned char *buf, int len);
LWS_EXTERN int
lws_ssl_pending(struct lws *wsi);
LWS_EXTERN int
lws_server_socket_service_ssl(struct lws **wsi, struct lws *new_wsi,
lws_sockfd_type accept_fd,
struct lws_pollfd *pollfd);
LWS_EXTERN int
lws_ssl_close(struct lws *wsi);
LWS_EXTERN void
lws_ssl_context_destroy(struct lws_context *context);
LWS_VISIBLE void
lws_ssl_remove_wsi_from_buffered_list(struct lws *wsi);
#ifndef LWS_NO_SERVER
LWS_EXTERN int
lws_context_init_server_ssl(struct lws_context_creation_info *info,
struct lws_context *context);
#else
#define lws_context_init_server_ssl(_a, _b) (0)
#endif
LWS_EXTERN void
lws_ssl_destroy(struct lws_context *context);
/* HTTP2-related */
#ifdef LWS_USE_HTTP2
LWS_EXTERN void
lws_context_init_http2_ssl(struct lws_context *context);
#else
#define lws_context_init_http2_ssl(_a)
#endif
#endif
LWS_EXTERN int
lws_ssl_capable_read_no_ssl(struct lws *wsi, unsigned char *buf, int len);
LWS_EXTERN int
lws_ssl_capable_write_no_ssl(struct lws *wsi, unsigned char *buf, int len);
LWS_EXTERN int
lws_ssl_pending_no_ssl(struct lws *wsi);
#ifndef LWS_NO_CLIENT
LWS_EXTERN int lws_client_socket_service(struct lws_context *context,
struct lws *wsi,
struct lws_pollfd *pollfd);
#ifdef LWS_OPENSSL_SUPPORT
LWS_EXTERN int
lws_context_init_client_ssl(struct lws_context_creation_info *info,
struct lws_context *context);
#else
#define lws_context_init_client_ssl(_a, _b) (0)
#endif
LWS_EXTERN int
lws_handshake_client(struct lws *wsi, unsigned char **buf, size_t len);
LWS_EXTERN void
lws_decode_ssl_error(void);
#else
#define lws_context_init_client_ssl(_a, _b) (0)
#define lws_handshake_client(_a, _b, _c) (0)
#endif
#ifndef LWS_NO_SERVER
LWS_EXTERN int
lws_server_socket_service(struct lws_context *context, struct lws *wsi,
struct lws_pollfd *pollfd);
LWS_EXTERN int
_lws_rx_flow_control(struct lws *wsi);
LWS_EXTERN int
lws_handshake_server(struct lws *wsi, unsigned char **buf, size_t len);
#else
#define lws_server_socket_service(_a, _b, _c) (0)
#define _lws_rx_flow_control(_a) (0)
#define lws_handshake_server(_a, _b, _c) (0)
#endif
LWS_EXTERN int
lws_get_addresses(struct lws_context *context, void *ads, char *name,
int name_len, char *rip, int rip_len);
/*
* custom allocator
*/
LWS_EXTERN void*
lws_realloc(void *ptr, size_t size);
LWS_EXTERN void*
lws_zalloc(size_t size);
#define lws_malloc(S) lws_realloc(NULL, S)
#define lws_free(P) lws_realloc(P, 0)
#define lws_free_set_NULL(P) do { lws_realloc(P, 0); (P) = NULL; } while(0)
/* lws_plat_ */
LWS_EXTERN void
lws_plat_delete_socket_from_fds(struct lws_context *context,
struct lws *wsi, int m);
LWS_EXTERN void
lws_plat_insert_socket_into_fds(struct lws_context *context,
struct lws *wsi);
LWS_EXTERN void
lws_plat_service_periodic(struct lws_context *context);
LWS_EXTERN int
lws_plat_change_pollfd(struct lws_context *context, struct lws *wsi,
struct lws_pollfd *pfd);
LWS_EXTERN int
lws_plat_context_early_init(void);
LWS_EXTERN void
lws_plat_context_early_destroy(struct lws_context *context);
LWS_EXTERN void
lws_plat_context_late_destroy(struct lws_context *context);
LWS_EXTERN int
lws_poll_listen_fd(struct lws_pollfd *fd);
LWS_EXTERN int
lws_plat_service(struct lws_context *context, int timeout_ms);
LWS_EXTERN int
lws_plat_init(struct lws_context *context,
struct lws_context_creation_info *info);
LWS_EXTERN void
lws_plat_drop_app_privileges(struct lws_context_creation_info *info);
LWS_EXTERN unsigned long long
time_in_microseconds(void);
LWS_EXTERN const char *
lws_plat_inet_ntop(int af, const void *src, char *dst, int cnt);
#ifdef __cplusplus
};
#endif