mongoose/docs/c-api/net.h/struct_mg_connection.md

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---
title: "struct mg_connection"
decl_name: "struct mg_connection"
symbol_kind: "struct"
signature: |
struct mg_connection {
struct mg_connection *next, *prev; /* mg_mgr::active_connections linkage */
struct mg_connection *listener; /* Set only for accept()-ed connections */
struct mg_mgr *mgr; /* Pointer to containing manager */
sock_t sock; /* Socket to the remote peer */
int err;
union socket_address sa; /* Remote peer address */
size_t recv_mbuf_limit; /* Max size of recv buffer */
struct mbuf recv_mbuf; /* Received data */
struct mbuf send_mbuf; /* Data scheduled for sending */
SSL *ssl;
SSL_CTX *ssl_ctx;
time_t last_io_time; /* Timestamp of the last socket IO */
double ev_timer_time; /* Timestamp of the future MG_EV_TIMER */
mg_event_handler_t proto_handler; /* Protocol-specific event handler */
void *proto_data; /* Protocol-specific data */
void (*proto_data_destructor)(void *proto_data);
mg_event_handler_t handler; /* Event handler function */
void *user_data; /* User-specific data */
union {
void *v;
/*
* the C standard is fussy about fitting function pointers into
* void pointers, since some archs might have fat pointers for functions.
*/
mg_event_handler_t f;
} priv_1; /* Used by mg_enable_multithreading() */
void *priv_2; /* Used by mg_enable_multithreading() */
void *mgr_data; /* Implementation-specific event manager's data. */
unsigned long flags;
/* Flags set by Mongoose */
#define MG_F_LISTENING (1 << 0) /* This connection is listening */
#define MG_F_UDP (1 << 1) /* This connection is UDP */
#define MG_F_RESOLVING (1 << 2) /* Waiting for async resolver */
#define MG_F_CONNECTING (1 << 3) /* connect() call in progress */
#define MG_F_SSL_HANDSHAKE_DONE (1 << 4) /* SSL specific */
#define MG_F_WANT_READ (1 << 5) /* SSL specific */
#define MG_F_WANT_WRITE (1 << 6) /* SSL specific */
#define MG_F_IS_WEBSOCKET (1 << 7) /* Websocket specific */
/* Flags that are settable by user */
#define MG_F_SEND_AND_CLOSE (1 << 10) /* Push remaining data and close */
#define MG_F_CLOSE_IMMEDIATELY (1 << 11) /* Disconnect */
#define MG_F_WEBSOCKET_NO_DEFRAG (1 << 12) /* Websocket specific */
#define MG_F_DELETE_CHUNK (1 << 13) /* HTTP specific */
#define MG_F_USER_1 (1 << 20) /* Flags left for application */
#define MG_F_USER_2 (1 << 21)
#define MG_F_USER_3 (1 << 22)
#define MG_F_USER_4 (1 << 23)
#define MG_F_USER_5 (1 << 24)
#define MG_F_USER_6 (1 << 25)
};
---
Mongoose connection.