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#ifndef GRPC_INTERNAL_CORE_IOMGR_UDP_SERVER_H
#define GRPC_INTERNAL_CORE_IOMGR_UDP_SERVER_H

#include "src/core/iomgr/endpoint.h"

/* Forward decl of grpc_udp_server */
typedef struct grpc_udp_server grpc_udp_server;

/* New server callback: ep is the newly connected connection */
typedef void (*grpc_udp_server_cb)(void *arg, grpc_endpoint *ep);

/* Called when data is available to read from the socket. */
typedef void (*grpc_udp_server_read_cb)(int fd,
                                        grpc_udp_server_cb new_transport_cb,
                                        void *cb_arg);

/* Create a server, initially not bound to any ports */
grpc_udp_server *grpc_udp_server_create(void);

/* Start listening to bound ports */
void grpc_udp_server_start(grpc_udp_server *server, grpc_pollset **pollsets,
                           size_t pollset_count, grpc_udp_server_cb cb,
                           void *cb_arg);

int grpc_udp_server_get_fd(grpc_udp_server *s, unsigned index);

/* Add a port to the server, returning port number on success, or negative
   on failure.

   The :: and 0.0.0.0 wildcard addresses are treated identically, accepting
   both IPv4 and IPv6 connections, but :: is the preferred style.  This usually
   creates one socket, but possibly two on systems which support IPv6,
   but not dualstack sockets. */

/* TODO(ctiller): deprecate this, and make grpc_udp_server_add_ports to handle
                  all of the multiple socket port matching logic in one place */
int grpc_udp_server_add_port(grpc_udp_server *s, const void *addr, int addr_len,
                             grpc_udp_server_read_cb read_cb);

void grpc_udp_server_destroy(grpc_udp_server *server,
                             void (*shutdown_done)(void *shutdown_done_arg),
                             void *shutdown_done_arg);

/* Write the contents of buffer to the underlying UDP socket. */
/*
void grpc_udp_server_write(grpc_udp_server *s,
                           const char *buffer,
                           int buf_len,
                           const struct sockaddr* to);
                           */

#endif /* GRPC_INTERNAL_CORE_IOMGR_UDP_SERVER_H */