GNU libmicrohttpd  0.9.72
daemon.c File Reference

A minimal-HTTP server library. More...

#include "platform.h"
#include "internal.h"
#include "response.h"
#include "connection.h"
#include "memorypool.h"
#include "mhd_limits.h"
#include "autoinit_funcs.h"
#include "mhd_mono_clock.h"
#include "mhd_sockets.h"
#include "mhd_itc.h"
#include "mhd_compat.h"
#include "mhd_send.h"
#include "tsearch.h"
Include dependency graph for daemon.c:

Go to the source code of this file.

Macros

#define MHD_MAX_CONNECTIONS_DEFAULT   (FD_SETSIZE - 4)
 
#define MHD_POOL_SIZE_DEFAULT   (32 * 1024)
 

Typedefs

typedef void(* VfprintfFunctionPointerType) (void *cls, const char *format, va_list va)
 

Functions

static void close_all_connections (struct MHD_Daemon *daemon)
 
static void mhd_panic_std (void *cls, const char *file, unsigned int line, const char *reason)
 
void MHD_init (void)
 
void MHD_check_global_init_ (void)
 
_MHD_EXTERN void MHD_free (void *ptr)
 
static struct MHD_DaemonMHD_get_master (struct MHD_Daemon *daemon)
 
static void MHD_ip_count_lock (struct MHD_Daemon *daemon)
 
static void MHD_ip_count_unlock (struct MHD_Daemon *daemon)
 
static int MHD_ip_addr_compare (const void *a1, const void *a2)
 
static enum MHD_Result MHD_ip_addr_to_key (const struct sockaddr *addr, socklen_t addrlen, struct MHD_IPCount *key)
 
static enum MHD_Result MHD_ip_limit_add (struct MHD_Daemon *daemon, const struct sockaddr *addr, socklen_t addrlen)
 
static void MHD_ip_limit_del (struct MHD_Daemon *daemon, const struct sockaddr *addr, socklen_t addrlen)
 
_MHD_EXTERN enum MHD_Result MHD_get_fdset (struct MHD_Daemon *daemon, fd_set *read_fd_set, fd_set *write_fd_set, fd_set *except_fd_set, MHD_socket *max_fd)
 
static enum MHD_Result internal_get_fdset2 (struct MHD_Daemon *daemon, fd_set *read_fd_set, fd_set *write_fd_set, fd_set *except_fd_set, MHD_socket *max_fd, unsigned int fd_setsize)
 
_MHD_EXTERN enum MHD_Result MHD_get_fdset2 (struct MHD_Daemon *daemon, fd_set *read_fd_set, fd_set *write_fd_set, fd_set *except_fd_set, MHD_socket *max_fd, unsigned int fd_setsize)
 
static enum MHD_Result call_handlers (struct MHD_Connection *con, bool read_ready, bool write_ready, bool force_close)
 
static void MHD_cleanup_connections (struct MHD_Daemon *daemon)
 
static struct MHD_Connectionnew_connection_prepare_ (struct MHD_Daemon *daemon, MHD_socket client_socket, const struct sockaddr *addr, socklen_t addrlen, bool external_add, bool non_blck, bool sk_spipe_supprs)
 
static enum MHD_Result new_connection_process_ (struct MHD_Daemon *daemon, struct MHD_Connection *connection)
 
static enum MHD_Result internal_add_connection (struct MHD_Daemon *daemon, MHD_socket client_socket, const struct sockaddr *addr, socklen_t addrlen, bool external_add, bool non_blck, bool sk_spipe_supprs)
 
static void new_connections_list_process_ (struct MHD_Daemon *daemon)
 
void internal_suspend_connection_ (struct MHD_Connection *connection)
 
void MHD_suspend_connection (struct MHD_Connection *connection)
 
void MHD_resume_connection (struct MHD_Connection *connection)
 
static enum MHD_Result resume_suspended_connections (struct MHD_Daemon *daemon)
 
_MHD_EXTERN enum MHD_Result MHD_add_connection (struct MHD_Daemon *daemon, MHD_socket client_socket, const struct sockaddr *addr, socklen_t addrlen)
 
static enum MHD_Result MHD_accept_connection (struct MHD_Daemon *daemon)
 
_MHD_EXTERN enum MHD_Result MHD_get_timeout (struct MHD_Daemon *daemon, MHD_UNSIGNED_LONG_LONG *timeout)
 
static enum MHD_Result internal_run_from_select (struct MHD_Daemon *daemon, const fd_set *read_fd_set, const fd_set *write_fd_set, const fd_set *except_fd_set)
 
_MHD_EXTERN enum MHD_Result MHD_run_from_select (struct MHD_Daemon *daemon, const fd_set *read_fd_set, const fd_set *write_fd_set, const fd_set *except_fd_set)
 
static enum MHD_Result MHD_select (struct MHD_Daemon *daemon, int may_block)
 
static enum MHD_Result MHD_poll (struct MHD_Daemon *daemon, int may_block)
 
_MHD_EXTERN enum MHD_Result MHD_run (struct MHD_Daemon *daemon)
 
static void close_connection (struct MHD_Connection *pos)
 
static size_t unescape_wrapper (void *cls, struct MHD_Connection *connection, char *val)
 
_MHD_EXTERN struct MHD_DaemonMHD_start_daemon (unsigned int flags, uint16_t port, MHD_AcceptPolicyCallback apc, void *apc_cls, MHD_AccessHandlerCallback dh, void *dh_cls,...)
 
_MHD_EXTERN MHD_socket MHD_quiesce_daemon (struct MHD_Daemon *daemon)
 
static enum MHD_Result parse_options_va (struct MHD_Daemon *daemon, const struct sockaddr **servaddr, va_list ap)
 
static enum MHD_Result parse_options (struct MHD_Daemon *daemon, const struct sockaddr **servaddr,...)
 
_MHD_EXTERN struct MHD_DaemonMHD_start_daemon_va (unsigned int flags, uint16_t port, MHD_AcceptPolicyCallback apc, void *apc_cls, MHD_AccessHandlerCallback dh, void *dh_cls, va_list ap)
 
_MHD_EXTERN void MHD_stop_daemon (struct MHD_Daemon *daemon)
 
_MHD_EXTERN const union MHD_DaemonInfoMHD_get_daemon_info (struct MHD_Daemon *daemon, enum MHD_DaemonInfoType info_type,...)
 
_MHD_EXTERN void MHD_set_panic_func (MHD_PanicCallback cb, void *cls)
 
_MHD_EXTERN const char * MHD_get_version (void)
 
_MHD_EXTERN enum MHD_Result MHD_is_feature_supported (enum MHD_FEATURE feature)
 
void MHD_fini (void)
 

Variables

MHD_PanicCallback mhd_panic = (MHD_PanicCallback) NULL
 
void * mhd_panic_cls = NULL
 
volatile int global_init_count = 0
 

Detailed Description

A minimal-HTTP server library.

Author
Daniel Pittman
Christian Grothoff
Karlson2k (Evgeny Grin)

Definition in file daemon.c.

Macro Definition Documentation

◆ MHD_MAX_CONNECTIONS_DEFAULT

#define MHD_MAX_CONNECTIONS_DEFAULT   (FD_SETSIZE - 4)

Default connection limit.

Definition at line 77 of file daemon.c.

◆ MHD_POOL_SIZE_DEFAULT

#define MHD_POOL_SIZE_DEFAULT   (32 * 1024)

Default memory allowed per connection.

Definition at line 85 of file daemon.c.

Typedef Documentation

◆ VfprintfFunctionPointerType

typedef void(* VfprintfFunctionPointerType) (void *cls, const char *format, va_list va)

Signature of the MHD custom logger function.

Parameters
clsclosure
formatformat string
vaarguments to the format string (fprintf-style)

Definition at line 5328 of file daemon.c.

Function Documentation

◆ call_handlers()

static enum MHD_Result call_handlers ( struct MHD_Connection con,
bool  read_ready,
bool  write_ready,
bool  force_close 
)
static

Call the handlers for a connection in the appropriate order based on the readiness as detected by the event loop.

Parameters
conconnection to handle
read_readyset if the socket is ready for reading
write_readyset if the socket is ready for writing
force_closeset if a hard error was detected on the socket; if this information is not available, simply pass MHD_NO
Returns
MHD_YES to continue normally, MHD_NO if a serious error was encountered and the connection is to be closed.

Definition at line 480 of file daemon.c.

References _, MHD_get_master(), MHD_ip_addr_compare(), MHD_ip_addr_to_key(), MHD_ip_count_lock(), MHD_ip_count_unlock(), MHD_NO, MHD_PANIC, NULL, MHD_Daemon::per_ip_connection_count, MHD_Daemon::per_ip_connection_limit, tdelete(), and tfind().

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◆ close_all_connections()

static void close_all_connections ( struct MHD_Daemon daemon)
static

Close all connections for the daemon. Must only be called when MHD_Daemon::shutdown was set to MHD_YES.

Remarks
To be called only from thread that process daemon's select()/poll()/etc.
Parameters
daemondaemon to close down

Close all connections for the daemon. Must only be called when MHD_Daemon::shutdown was set to true.

Remarks
To be called only from thread that process daemon's select()/poll()/etc.
Parameters
daemondaemon to close down

Definition at line 7107 of file daemon.c.

References _, MHD_Daemon::cleanup_connection_mutex, close_connection(), MHD_Daemon::connections_tail, MHD_Connection::daemon, DLL_remove, MHD_Daemon::itc, MHD_ALLOW_UPGRADE, mhd_assert, MHD_cleanup_connections(), MHD_connection_finish_forward_(), MHD_mutex_lock_chk_, MHD_mutex_unlock_chk_, MHD_PANIC, MHD_resume_connection(), MHD_TEST_ALLOW_SUSPEND_RESUME, MHD_USE_INTERNAL_POLLING_THREAD, MHD_USE_THREAD_PER_CONNECTION, MHD_USE_TLS, MHD_Daemon::new_connections_head, MHD_Daemon::new_connections_tail, NULL, MHD_Daemon::options, MHD_Connection::pid, MHD_Daemon::pid, MHD_Connection::prev, resume_suspended_connections(), MHD_Connection::resuming, MHD_Daemon::resuming, MHD_Daemon::shutdown, MHD_Connection::socket_fd, MHD_Daemon::suspended_connections_head, MHD_Daemon::suspended_connections_tail, MHD_Connection::thread_joined, and MHD_Daemon::worker_pool.

Referenced by MHD_stop_daemon().

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◆ close_connection()

static void close_connection ( struct MHD_Connection pos)
static

◆ internal_add_connection()

static enum MHD_Result internal_add_connection ( struct MHD_Daemon daemon,
MHD_socket  client_socket,
const struct sockaddr *  addr,
socklen_t  addrlen,
bool  external_add,
bool  non_blck,
bool  sk_spipe_supprs 
)
static

Add another client connection to the set of connections managed by MHD. This API is usually not needed (since MHD will accept inbound connections on the server socket). Use this API in special cases, for example if your HTTP server is behind NAT and needs to connect out to the HTTP client.

The given client socket will be managed (and closed!) by MHD after this call and must no longer be used directly by the application afterwards.

Parameters
daemondaemon that manages the connection
client_socketsocket to manage (MHD will expect to receive an HTTP request from this socket next).
addrIP address of the client
addrlennumber of bytes in addr
external_addperform additional operations needed due to the application calling us directly
non_blckindicate that socket in non-blocking mode
sk_spipe_supprsindicate that the client_socket has set SIGPIPE suppression
Returns
MHD_YES on success, MHD_NO if this daemon could not handle the connection (i.e. malloc failed, etc). The socket will be closed in any case; 'errno' is set to indicate further details about the error.

Definition at line 2381 of file daemon.c.

References _, _MHD_OFF, _MHD_UNKNOWN, MHD_Connection::addr, MHD_Connection::addr_len, MHD_Daemon::apc, MHD_Daemon::apc_cls, MHD_Daemon::connection_limit, MHD_Connection::connection_timeout, MHD_Daemon::connection_timeout, MHD_Daemon::connections, MHD_Connection::daemon, MHD_Connection::last_activity, MHD_calloc_(), MHD_ip_limit_add(), MHD_ip_limit_del(), MHD_monotonic_sec_counter(), MHD_NO, MHD_PANIC, MHD_set_http_callbacks_(), MHD_set_https_callbacks(), MHD_socket_close_chk_, MHD_strerror_, MHD_TLS_CONN_INIT, MHD_USE_INSECURE_TLS_EARLY_DATA, MHD_USE_POST_HANDSHAKE_AUTH_SUPPORT, MHD_USE_TLS, NULL, MHD_Daemon::options, MHD_Connection::sk_corked, MHD_Connection::sk_nodelay, MHD_Connection::sk_nonblck, MHD_Connection::sk_spipe_suppress, and MHD_Connection::socket_fd.

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◆ internal_get_fdset2()

static enum MHD_Result internal_get_fdset2 ( struct MHD_Daemon daemon,
fd_set *  read_fd_set,
fd_set *  write_fd_set,
fd_set *  except_fd_set,
MHD_socket max_fd,
unsigned int  fd_setsize 
)
static

Internal version of MHD_get_fdset2().

Parameters
daemondaemon to get sets from
read_fd_setread set
write_fd_setwrite set
except_fd_setexcept set
max_fdincreased to largest FD added (if larger than existing value); can be NULL
fd_setsizevalue of FD_SETSIZE
Returns
MHD_YES on success, MHD_NO if any FD didn't fit fd_set.

Definition at line 480 of file daemon.c.

◆ internal_run_from_select()

◆ internal_suspend_connection_()

◆ MHD_accept_connection()

static enum MHD_Result MHD_accept_connection ( struct MHD_Daemon daemon)
static

Accept an incoming connection and create the MHD_Connection object for it. This function also enforces policy by way of checking with the accept policy callback.

Remarks
To be called only from thread that process daemon's select()/poll()/etc.
Parameters
daemonhandle with the listen socket
Returns
MHD_YES on success (connections denied by policy or due to 'out of memory' and similar errors) are still considered successful as far as MHD_accept_connection() is concerned); a return code of MHD_NO only refers to the actual accept() system call.

Definition at line 3134 of file daemon.c.

References _, MHD_Daemon::cleanup_connection_mutex, MHD_Connection::daemon, MHD_Daemon::itc, MHD_mutex_lock_chk_, MHD_mutex_unlock_chk_, MHD_PANIC, MHD_TEST_ALLOW_SUSPEND_RESUME, MHD_Daemon::options, MHD_Connection::resuming, and MHD_Daemon::resuming.

◆ MHD_check_global_init_()

void MHD_check_global_init_ ( void  )

Check whether global initialisation was performed and call initialiser if necessary.

Definition at line 199 of file daemon.c.

References global_init_count, MHD_init(), MHD_mutex_lock_chk_, and MHD_mutex_unlock_chk_.

Referenced by MHD_start_daemon_va().

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◆ MHD_cleanup_connections()

static void MHD_cleanup_connections ( struct MHD_Daemon daemon)
static

Free resources associated with all closed connections. (destroy responses, free buffers, etc.). All closed connections are kept in the "cleanup" doubly-linked list.

Parameters
daemondaemon to clean up

Free resources associated with all closed connections. (destroy responses, free buffers, etc.). All closed connections are kept in the "cleanup" doubly-linked list.

Remarks
To be called only from thread that process daemon's select()/poll()/etc.
Parameters
daemondaemon to clean up

Definition at line 3641 of file daemon.c.

Referenced by close_all_connections(), and MHD_get_daemon_info().

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◆ MHD_fini()

void MHD_fini ( void  )

Definition at line 7876 of file daemon.c.

References MHD_monotonic_sec_counter_finish().

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◆ MHD_free()

_MHD_EXTERN void MHD_free ( void *  ptr)

Free the memory given by ptr. Calls "free(ptr)". This function should be used to free the username returned by MHD_digest_auth_get_username().

Note
Since v0.9.56
Parameters
ptrpointer to free.

Definition at line 246 of file daemon.c.

◆ MHD_get_master()

static struct MHD_Daemon* MHD_get_master ( struct MHD_Daemon daemon)
static

Trace up to and return master daemon. If the supplied daemon is a master, then return the daemon itself.

Parameters
daemonhandle to a daemon
Returns
master daemon handle

Definition at line 260 of file daemon.c.

References MHD_Daemon::master, and NULL.

Referenced by call_handlers().

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◆ MHD_init()

void MHD_init ( void  )

Globally initialise library.

Initialize do setup work.

Definition at line 7830 of file daemon.c.

References _, MHD_init_mem_pools_(), MHD_monotonic_sec_counter_init(), MHD_PANIC, mhd_panic, mhd_panic_std(), and NULL.

Referenced by MHD_check_global_init_().

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◆ MHD_ip_addr_compare()

static int MHD_ip_addr_compare ( const void *  a1,
const void *  a2 
)
static

Tree comparison function for IP addresses (supplied to tsearch() family). We compare everything in the struct up through the beginning of the 'count' field.

Parameters
a1first address to compare
a2second address to compare
Returns
-1, 0 or 1 depending on result of compare

Definition at line 344 of file daemon.c.

Referenced by call_handlers().

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◆ MHD_ip_addr_to_key()

static enum MHD_Result MHD_ip_addr_to_key ( const struct sockaddr *  addr,
socklen_t  addrlen,
struct MHD_IPCount *  key 
)
static

Parse address and initialize key using the address.

Parameters
addraddress to parse
addrlennumber of bytes in addr
keywhere to store the parsed address
Returns
MHD_YES on success and MHD_NO otherwise (e.g., invalid address type)

Definition at line 344 of file daemon.c.

Referenced by call_handlers().

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◆ MHD_ip_count_lock()

static void MHD_ip_count_lock ( struct MHD_Daemon daemon)
static

Lock shared structure for IP connection counts and connection DLLs.

Parameters
daemonhandle to daemon where lock is

Definition at line 308 of file daemon.c.

References MHD_mutex_lock_chk_, and MHD_Daemon::per_ip_connection_mutex.

Referenced by call_handlers().

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◆ MHD_ip_count_unlock()

static void MHD_ip_count_unlock ( struct MHD_Daemon daemon)
static

Unlock shared structure for IP connection counts and connection DLLs.

Parameters
daemonhandle to daemon where lock is

Definition at line 324 of file daemon.c.

References MHD_mutex_unlock_chk_, and MHD_Daemon::per_ip_connection_mutex.

Referenced by call_handlers().

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◆ MHD_ip_limit_add()

static enum MHD_Result MHD_ip_limit_add ( struct MHD_Daemon daemon,
const struct sockaddr *  addr,
socklen_t  addrlen 
)
static

Check if IP address is over its limit in terms of the number of allowed concurrent connections. If the IP is still allowed, increments the connection counter.

Parameters
daemonhandle to daemon where connection counts are tracked
addraddress to add (or increment counter)
addrlennumber of bytes in addr
Returns
Return MHD_YES if IP below limit, MHD_NO if IP has surpassed limit. Also returns MHD_NO if fails to allocate memory.

Definition at line 344 of file daemon.c.

Referenced by internal_add_connection().

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◆ MHD_ip_limit_del()

static void MHD_ip_limit_del ( struct MHD_Daemon daemon,
const struct sockaddr *  addr,
socklen_t  addrlen 
)
static

Decrement connection count for IP address, removing from table count reaches 0.

Parameters
daemonhandle to daemon where connection counts are tracked
addraddress to remove (or decrement counter)
addrlennumber of bytes in addr

Definition at line 480 of file daemon.c.

Referenced by internal_add_connection(), and internal_run_from_select().

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◆ mhd_panic_std()

static void mhd_panic_std ( void *  cls,
const char *  file,
unsigned int  line,
const char *  reason 
)
static

Default implementation of the panic function, prints an error message and aborts.

Parameters
clsunused
filename of the file with the problem
lineline number with the problem
reasonerror message with details

Definition at line 127 of file daemon.c.

References _.

Referenced by MHD_init().

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◆ MHD_poll()

static enum MHD_Result MHD_poll ( struct MHD_Daemon daemon,
int  may_block 
)
static

Do poll()-based processing.

Parameters
daemondaemon to run poll()-loop for
may_blockMHD_YES if blocking, MHD_NO if non-blocking
Returns
MHD_NO on serious errors, MHD_YES on success

Definition at line 3641 of file daemon.c.

◆ MHD_resume_connection()

void MHD_resume_connection ( struct MHD_Connection connection)

Resume handling of network data for suspended connection. It is safe to resume a suspended connection at any time. Calling this function on a connection that was not previously suspended will result in undefined behavior.

Parameters
connectionthe connection to resume

Definition at line 3134 of file daemon.c.

Referenced by close_all_connections().

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◆ MHD_select()

static enum MHD_Result MHD_select ( struct MHD_Daemon daemon,
int  may_block 
)
static

Main internal select() call. Will compute select sets, call select() and then internal_run_from_select with the result.

Parameters
daemondaemon to run select() loop for
may_blockMHD_YES if blocking, MHD_NO if non-blocking
Returns
MHD_NO on serious errors, MHD_YES on success

Definition at line 3641 of file daemon.c.

◆ MHD_suspend_connection()

void MHD_suspend_connection ( struct MHD_Connection connection)

Suspend handling of network data for a given connection. This can be used to dequeue a connection from MHD's event loop (external select, internal select or thread pool; not applicable to thread-per-connection!) for a while.

If you use this API in conjunction with a internal select or a thread pool, you must set the option MHD_USE_ITC to ensure that a resumed connection is immediately processed by MHD.

Suspended connections continue to count against the total number of connections allowed (per daemon, as well as per IP, if such limits are set). Suspended connections will NOT time out; timeouts will restart when the connection handling is resumed. While a connection is suspended, MHD will not detect disconnects by the client.

The only safe time to suspend a connection is from the MHD_AccessHandlerCallback.

Finally, it is an API violation to call MHD_stop_daemon while having suspended connections (this will at least create memory and socket leaks or lead to undefined behavior). You must explicitly resume all connections before stopping the daemon.

Remarks
In thread-per-connection mode: can be called from any thread, in any other mode: to be called only from thread that process daemon's select()/poll()/etc.
Parameters
connectionthe connection to suspend

Definition at line 3097 of file daemon.c.

References _, MHD_Connection::daemon, internal_suspend_connection_(), mhd_assert, MHD_PANIC, MHD_TEST_ALLOW_SUSPEND_RESUME, MHD_USE_INTERNAL_POLLING_THREAD, MHD_USE_THREAD_PER_CONNECTION, NULL, MHD_Daemon::options, and MHD_Daemon::pid.

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◆ new_connection_prepare_()

static struct MHD_Connection* new_connection_prepare_ ( struct MHD_Daemon daemon,
MHD_socket  client_socket,
const struct sockaddr *  addr,
socklen_t  addrlen,
bool  external_add,
bool  non_blck,
bool  sk_spipe_supprs 
)
static

Do basic preparation work on the new incoming connection.

This function do all preparation that is possible outside main daemon thread.

Remarks
Could be called from any thread.
Parameters
daemondaemon that manages the connection
client_socketsocket to manage (MHD will expect to receive an HTTP request from this socket next).
addrIP address of the client
addrlennumber of bytes in addr
external_addindicate that socket has been added externally
non_blckindicate that socket in non-blocking mode
sk_spipe_supprsindicate that the client_socket has set SIGPIPE suppression
Returns
pointer to the connection on success, NULL if this daemon could not handle the connection (i.e. malloc failed, etc). The socket will be closed in case of error; 'errno' is set to indicate further details about the error.

Definition at line 2381 of file daemon.c.

◆ new_connection_process_()

static enum MHD_Result new_connection_process_ ( struct MHD_Daemon daemon,
struct MHD_Connection connection 
)
static

Finally insert the new connection to the list of connections served by the daemon and start processing.

Remarks
To be called only from thread that process daemon's select()/poll()/etc.
Parameters
daemondaemon that manages the connection
connectionthe newly created connection
Returns
MHD_YES on success, MHD_NO on error

Definition at line 2381 of file daemon.c.

Referenced by new_connections_list_process_().

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◆ new_connections_list_process_()

static void new_connections_list_process_ ( struct MHD_Daemon daemon)
static

◆ parse_options()

static enum MHD_Result parse_options ( struct MHD_Daemon daemon,
const struct sockaddr **  servaddr,
  ... 
)
static

Parse a list of options given as varargs.

Parameters
daemonthe daemon to initialize
servaddrwhere to store the server's listen address
...the options
Returns
MHD_YES on success, MHD_NO on error

Definition at line 5328 of file daemon.c.

◆ parse_options_va()

static enum MHD_Result parse_options_va ( struct MHD_Daemon daemon,
const struct sockaddr **  servaddr,
va_list  ap 
)
static

Parse a list of options given as varargs.

Parameters
daemonthe daemon to initialize
servaddrwhere to store the server's listen address
apthe options
Returns
MHD_YES on success, MHD_NO on error

Definition at line 5328 of file daemon.c.

Referenced by MHD_start_daemon_va().

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◆ resume_suspended_connections()

static enum MHD_Result resume_suspended_connections ( struct MHD_Daemon daemon)
static

Run through the suspended connections and move any that are no longer suspended back to the active state.

Remarks
To be called only from thread that process daemon's select()/poll()/etc.
Parameters
daemondaemon context
Returns
MHD_YES if a connection was actually resumed

Definition at line 3134 of file daemon.c.

Referenced by close_all_connections().

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◆ unescape_wrapper()

static size_t unescape_wrapper ( void *  cls,
struct MHD_Connection connection,
char *  val 
)
static

Process escape sequences ('HH') Updates val in place; the result should be UTF-8 encoded and cannot be larger than the input. The result must also still be 0-terminated.

Parameters
clsclosure (use NULL)
connectionhandle to connection, not used
valvalue to unescape (modified in the process)
Returns
length of the resulting val (strlen(val) maybe shorter afterwards due to elimination of escape sequences)

Definition at line 5173 of file daemon.c.

References MHD_http_unescape().

Referenced by MHD_start_daemon_va().

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Variable Documentation

◆ global_init_count

volatile int global_init_count = 0

Track global initialisation

Definition at line 182 of file daemon.c.

Referenced by MHD_check_global_init_().

◆ mhd_panic

◆ mhd_panic_cls