GNU libmicrohttpd  0.9.29
MHD_Connection Struct Reference

#include </builddir/build/BUILD/libmicrohttpd-0.9.39/src/microhttpd/internal.h>

Data Fields

struct MHD_Connectionnext
 
struct MHD_Connectionprev
 
struct MHD_ConnectionnextX
 
struct MHD_ConnectionprevX
 
struct MHD_Daemondaemon
 
struct MHD_HTTP_Headerheaders_received
 
struct MHD_HTTP_Headerheaders_received_tail
 
struct MHD_Responseresponse
 
struct MemoryPool * pool
 
void * client_context
 
char * method
 
char * url
 
char * version
 
char * read_buffer
 
char * write_buffer
 
char * last
 
char * colon
 
struct sockaddr * addr
 
MHD_thread_handle_ pid
 
size_t read_buffer_size
 
size_t read_buffer_offset
 
size_t write_buffer_size
 
size_t write_buffer_send_offset
 
size_t write_buffer_append_offset
 
uint64_t remaining_upload_size
 
uint64_t response_write_position
 
size_t continue_message_write_offset
 
socklen_t addr_len
 
time_t last_activity
 
unsigned int connection_timeout
 
int client_aware
 
MHD_socket socket_fd
 
int read_closed
 
int thread_joined
 
int in_idle
 
enum MHD_CONNECTION_STATE state
 
enum MHD_ConnectionEventLoopInfo event_loop_info
 
unsigned int responseCode
 
int response_unready
 
int have_chunked_upload
 
size_t current_chunk_size
 
size_t current_chunk_offset
 
int(* read_handler )(struct MHD_Connection *connection)
 
int(* write_handler )(struct MHD_Connection *connection)
 
int(* idle_handler )(struct MHD_Connection *connection)
 
ReceiveCallback recv_cls
 
TransmitCallback send_cls
 
int suspended
 
int resuming
 

Detailed Description

State kept for each HTTP request.

Definition at line 509 of file internal.h.

Field Documentation

struct sockaddr* MHD_Connection::addr

Foreign address (of length addr_len). MALLOCED (not in pool!).

Definition at line 639 of file internal.h.

Referenced by internal_add_connection(), MHD_cleanup_connections(), and MHD_get_connection_info().

socklen_t MHD_Connection::addr_len

Length of the foreign address.

Definition at line 699 of file internal.h.

Referenced by internal_add_connection(), and MHD_cleanup_connections().

int MHD_Connection::client_aware

Did we ever call the "default_handler" on this connection? (this flag will determine if we call the 'notify_completed' handler when the connection closes down).

Definition at line 718 of file internal.h.

Referenced by call_connection_handler(), MHD_connection_close(), MHD_connection_handle_idle(), and process_request_body().

void* MHD_Connection::client_context

We allow the main application to associate some pointer with the connection. Here is where we store it. (MHD does not know or care what it is).

Definition at line 586 of file internal.h.

Referenced by call_connection_handler(), MHD_connection_close(), MHD_connection_handle_idle(), parse_initial_message_line(), and process_request_body().

char* MHD_Connection::colon

Position after the colon on the last incomplete header line during parsing of headers. Allocated in pool. Only valid if state is either HEADER_PART_RECEIVED or FOOTER_PART_RECEIVED.

Definition at line 633 of file internal.h.

Referenced by process_broken_line(), and process_header_line().

unsigned int MHD_Connection::connection_timeout
size_t MHD_Connection::continue_message_write_offset

Position in the 100 CONTINUE message that we need to send when receiving http 1.1 requests.

Definition at line 694 of file internal.h.

Referenced by MHD_connection_handle_idle(), MHD_connection_handle_write(), and need_100_continue().

size_t MHD_Connection::current_chunk_offset

If we are receiving with chunked encoding, where are we currently with respect to the current chunk (at what offset / position)?

Definition at line 798 of file internal.h.

Referenced by process_request_body().

size_t MHD_Connection::current_chunk_size

If we are receiving with chunked encoding, where are we right now? Set to 0 if we are waiting to receive the chunk size; otherwise, this is the size of the current chunk. A value of zero is also used when we're at the end of the chunks.

Definition at line 792 of file internal.h.

Referenced by process_request_body().

enum MHD_ConnectionEventLoopInfo MHD_Connection::event_loop_info
int MHD_Connection::have_chunked_upload

Are we receiving with chunked encoding? This will be set to MHD_YES after we parse the headers and are processing the body with chunks. After we are done with the body and we are processing the footers; once the footers are also done, this will be set to MHD_NO again (before the final call to the handler).

Definition at line 784 of file internal.h.

Referenced by build_header_response(), MHD_connection_handle_idle(), parse_connection_headers(), and process_request_body().

struct MHD_HTTP_Header* MHD_Connection::headers_received
struct MHD_HTTP_Header* MHD_Connection::headers_received_tail

Tail of linked list of parsed headers.

Definition at line 561 of file internal.h.

Referenced by MHD_connection_handle_idle(), and MHD_set_connection_value().

int(* MHD_Connection::idle_handler) (struct MHD_Connection *connection)

Handler used for processing idle connection operations

Definition at line 813 of file internal.h.

Referenced by MHD_handle_connection(), MHD_run_from_select(), MHD_set_http_callbacks_(), and MHD_set_https_callbacks().

int MHD_Connection::in_idle

Are we currently inside the "idle" handler (to avoid recursively invoking it).

Definition at line 743 of file internal.h.

Referenced by cleanup_connection(), MHD_connection_handle_idle(), and MHD_queue_response().

char* MHD_Connection::last

Last incomplete header line during parsing of headers. Allocated in pool. Only valid if state is either HEADER_PART_RECEIVED or FOOTER_PART_RECEIVED.

Definition at line 625 of file internal.h.

Referenced by process_broken_line(), and process_header_line().

time_t MHD_Connection::last_activity

Last time this connection had any activity (reading or writing).

Definition at line 705 of file internal.h.

Referenced by internal_add_connection(), MHD_connection_handle_idle(), MHD_get_timeout(), MHD_handle_connection(), MHD_tls_connection_handle_idle(), run_tls_handshake(), and update_last_activity().

char* MHD_Connection::method
struct MHD_Connection* MHD_Connection::next

Next pointer for the DLL describing our IO state.

Definition at line 527 of file internal.h.

Referenced by close_all_connections(), MHD_get_fdset2(), MHD_run_from_select(), and resume_suspended_connections().

struct MHD_Connection* MHD_Connection::nextX

Next pointer for the XDLL organizing connections by timeout. This DLL can be either the 'manual_timeout_head/manual_timeout_tail' or the 'normal_timeout_head/normal_timeout_tail', depending on whether a custom timeout is set for the connection.

Definition at line 541 of file internal.h.

Referenced by MHD_get_timeout().

MHD_thread_handle_ MHD_Connection::pid

Thread handle for this connection (if we are using one thread per connection).

Definition at line 645 of file internal.h.

Referenced by close_all_connections(), internal_add_connection(), and MHD_cleanup_connections().

struct MemoryPool* MHD_Connection::pool

The memory pool is created whenever we first read from the TCP stream and destroyed at the end of each request (and re-created for the next request). In the meantime, this pointer is NULL. The pool is used for all connection-related data except for the response (which maybe shared between connections) and the IP address (which persists across individual requests).

Definition at line 578 of file internal.h.

Referenced by build_header_response(), check_write_done(), internal_add_connection(), MHD_cleanup_connections(), MHD_connection_handle_idle(), MHD_connection_handle_read(), MHD_set_connection_value(), parse_cookie_header(), process_broken_line(), try_grow_read_buffer(), and try_ready_chunked_body().

struct MHD_Connection* MHD_Connection::prev

Previous pointer for the DLL describing our IO state.

Definition at line 532 of file internal.h.

struct MHD_Connection* MHD_Connection::prevX

Previous pointer for the XDLL organizing connections by timeout.

Definition at line 546 of file internal.h.

char* MHD_Connection::read_buffer

Buffer for reading requests. Allocated in pool. Actually one byte larger than read_buffer_size (if non-NULL) to allow for 0-termination.

Definition at line 612 of file internal.h.

Referenced by do_read(), get_next_header_line(), MHD_connection_handle_idle(), MHD_connection_handle_read(), process_request_body(), and try_grow_read_buffer().

size_t MHD_Connection::read_buffer_offset
size_t MHD_Connection::read_buffer_size

Size of read_buffer (in bytes). This value indicates how many bytes we're willing to read into the buffer; the real buffer is one byte longer to allow for adding zero-termination (when needed).

Definition at line 653 of file internal.h.

Referenced by do_read(), get_next_header_line(), MHD_connection_handle_idle(), MHD_connection_handle_read(), MHD_connection_update_event_loop_info(), MHD_get_fdset2(), MHD_handle_connection(), MHD_run_from_select(), and try_grow_read_buffer().

int MHD_Connection::read_closed

Has this socket been closed for reading (i.e. other side closed the connection)? If so, we must completely close the connection once we are done sending our response (and stop trying to read from this socket).

Definition at line 733 of file internal.h.

Referenced by build_header_response(), close_all_connections(), do_read(), MHD_connection_close(), MHD_connection_handle_idle(), MHD_connection_handle_read(), MHD_connection_update_event_loop_info(), MHD_queue_response(), parse_connection_headers(), and transmit_error_response().

int(* MHD_Connection::read_handler) (struct MHD_Connection *connection)

Handler used for processing read connection operations

Definition at line 803 of file internal.h.

Referenced by MHD_handle_connection(), MHD_run_from_select(), MHD_set_http_callbacks_(), and MHD_set_https_callbacks().

ReceiveCallback MHD_Connection::recv_cls

Function used for reading HTTP request stream.

Definition at line 818 of file internal.h.

Referenced by do_read(), and internal_add_connection().

uint64_t MHD_Connection::remaining_upload_size

How many more bytes of the body do we expect to read? MHD_SIZE_UNKNOWN for unknown.

Definition at line 681 of file internal.h.

Referenced by MHD_connection_handle_idle(), parse_connection_headers(), and process_request_body().

int MHD_Connection::response_unready

Set to MHD_YES if the response's content reader callback failed to provide data the last time we tried to read from it. In that case, the write socket should be marked as unready until the CRC call succeeds.

Definition at line 775 of file internal.h.

uint64_t MHD_Connection::response_write_position

Current write position in the actual response (excluding headers, content only; should be 0 while sending headers).

Definition at line 688 of file internal.h.

Referenced by MHD_connection_handle_idle(), MHD_connection_handle_write(), MHD_queue_response(), send_param_adapter(), try_ready_chunked_body(), and try_ready_normal_body().

unsigned int MHD_Connection::responseCode

HTTP response code. Only valid if response object is already set.

Definition at line 766 of file internal.h.

Referenced by build_header_response(), MHD_connection_handle_idle(), and MHD_queue_response().

int MHD_Connection::resuming

Is the connection wanting to resume?

Definition at line 856 of file internal.h.

Referenced by cleanup_connection(), MHD_resume_connection(), and resume_suspended_connections().

TransmitCallback MHD_Connection::send_cls

Function used for writing HTTP response stream.

Definition at line 823 of file internal.h.

Referenced by do_write(), internal_add_connection(), and MHD_connection_handle_write().

int MHD_Connection::suspended

Is the connection suspended?

Definition at line 851 of file internal.h.

Referenced by cleanup_connection(), MHD_set_connection_option(), MHD_suspend_connection(), and resume_suspended_connections().

int MHD_Connection::thread_joined

Set to MHD_YES if the thread has been joined.

Definition at line 738 of file internal.h.

Referenced by close_all_connections(), and MHD_cleanup_connections().

char* MHD_Connection::url
char* MHD_Connection::version
char* MHD_Connection::write_buffer

Buffer for writing response (headers only). Allocated in pool.

Definition at line 618 of file internal.h.

Referenced by build_header_response(), check_write_done(), do_write(), MHD_connection_handle_idle(), and try_ready_chunked_body().

size_t MHD_Connection::write_buffer_append_offset

Last valid location in write_buffer (where do we append and up to where is it safe to send?)

Definition at line 675 of file internal.h.

Referenced by build_header_response(), check_write_done(), do_write(), MHD_connection_handle_idle(), send_param_adapter(), and try_ready_chunked_body().

size_t MHD_Connection::write_buffer_send_offset

Offset where we are with sending from write_buffer.

Definition at line 669 of file internal.h.

Referenced by build_header_response(), check_write_done(), do_write(), MHD_connection_handle_idle(), send_param_adapter(), and try_ready_chunked_body().

size_t MHD_Connection::write_buffer_size

Size of write_buffer (in bytes).

Definition at line 664 of file internal.h.

Referenced by build_header_response(), check_write_done(), MHD_connection_handle_idle(), and try_ready_chunked_body().

int(* MHD_Connection::write_handler) (struct MHD_Connection *connection)

Handler used for processing write connection operations

Definition at line 808 of file internal.h.

Referenced by MHD_handle_connection(), MHD_run_from_select(), MHD_set_http_callbacks_(), and MHD_set_https_callbacks().


The documentation for this struct was generated from the following file: