MHD_Connection Struct Reference

#include <internal.h>

Data Fields

struct MHD_Connectionnext
struct MHD_Connectionprev
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
pthread_t 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
int socket_fd
int read_closed
int thread_joined
enum MHD_CONNECTION_STATE state
unsigned int responseCode
int response_unready
int have_chunked_upload
unsigned int current_chunk_size
unsigned int 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

Detailed Description

State kept for each HTTP request.

Definition at line 463 of file internal.h.


Field Documentation

struct sockaddr* MHD_Connection::addr [read]

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

Definition at line 567 of file internal.h.

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

Length of the foreign address.

Definition at line 627 of file internal.h.

Referenced by MHD_add_connection(), and MHD_cleanup_connections().

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 646 of file internal.h.

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

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 514 of file internal.h.

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

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 561 of file internal.h.

Referenced by process_broken_line(), and process_header_line().

After how many seconds of inactivity should this connection time out? Zero for no timeout.

Definition at line 639 of file internal.h.

Referenced by MHD_add_connection(), MHD_connection_handle_idle(), MHD_get_timeout(), MHD_set_connection_option(), and MHD_tls_connection_handle_idle().

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

Definition at line 622 of file internal.h.

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

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

Definition at line 710 of file internal.h.

Referenced by process_request_body().

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 704 of file internal.h.

Referenced by process_request_body().

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 696 of file internal.h.

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

Tail of linked list of parsed headers.

Definition at line 489 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

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

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 553 of file internal.h.

Referenced by process_broken_line(), and process_header_line().

This is a doubly-linked list.

Definition at line 469 of file internal.h.

Referenced by close_all_connections(), MHD_get_fdset(), MHD_get_timeout(), and MHD_select().

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

Definition at line 573 of file internal.h.

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

struct MemoryPool* MHD_Connection::pool [read]

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 506 of file internal.h.

Referenced by build_header_response(), check_write_done(), get_next_header_line(), MHD_add_connection(), MHD_cleanup_connections(), MHD_connection_get_pollfd(), 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().

This is a doubly-linked list.

Definition at line 474 of file internal.h.

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 540 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().

Position where we currently append data in read_buffer (last valid position).

Definition at line 587 of file internal.h.

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

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 581 of file internal.h.

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

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 662 of file internal.h.

Referenced by build_header_response(), close_all_connections(), do_read(), MHD_connection_close(), MHD_connection_get_pollfd(), MHD_connection_handle_idle(), MHD_connection_handle_read(), 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

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

Function used for reading HTTP request stream.

Definition at line 730 of file internal.h.

Referenced by do_read(), and MHD_add_connection().

How many more bytes of the body do we expect to read? "-1" for unknown.

Definition at line 609 of file internal.h.

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

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 687 of file internal.h.

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

Definition at line 616 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().

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

Definition at line 678 of file internal.h.

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

Function used for writing HTTP response stream.

Definition at line 735 of file internal.h.

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

Socket for this connection. Set to -1 if this connection has died (daemon should clean up in that case).

Definition at line 653 of file internal.h.

Referenced by close_all_connections(), do_read(), MHD_add_connection(), MHD_cleanup_connections(), MHD_connection_close(), MHD_connection_get_pollfd(), MHD_connection_handle_idle(), MHD_handle_connection(), MHD_queue_response(), MHD_select(), recv_param_adapter(), and send_param_adapter().

Set to MHD_YES if the thread has been joined.

Definition at line 667 of file internal.h.

Referenced by close_all_connections(), and MHD_cleanup_connections().

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

Definition at line 546 of file internal.h.

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

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

Definition at line 603 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().

Offset where we are with sending from write_buffer.

Definition at line 597 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 of write_buffer (in bytes).

Definition at line 592 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

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


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

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