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Added support for connecting the hub to an upstream master hub (slave mode).

This commit is contained in:
Jan Vidar Krey 2013-02-07 12:17:26 +01:00
parent a7898779cb
commit 51fba8a7a1
3 changed files with 94 additions and 11 deletions
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9
src/core/hub.c
View File

@ -841,6 +841,15 @@ struct hub_info* hub_start_service(struct hub_config* config)
// Start the hub command sub-system
hub->commands = command_initialize(hub);
#ifdef LINK_SUPPORT
if (*config->hub_link_connect)
{
link_connect_uri(hub, config->hub_link_connect);
}
#endif
return hub;
}

88
src/core/link.c
View File

@ -20,6 +20,7 @@
#include "uhub.h"
#ifdef LINK_SUPPORT
static int link_send_support(struct hub_link* link);
static void link_net_event(struct net_connection* con, int event, void *arg)
{
@ -56,6 +57,7 @@ static void link_net_event(struct net_connection* con, int event, void *arg)
void link_disconnect(struct hub_link* link)
{
if (link->connection)
net_con_close(link->connection);
link->connection = NULL;
@ -96,22 +98,92 @@ struct hub_link* link_create(struct hub_info* hub, struct net_connection* con, s
return link;
}
struct hub_link* link_connect(struct hub_info* hub, const char* address)
static void link_connect_callback(struct net_connect_handle* handle, enum net_connect_status status, struct net_connection* con, void* ptr)
{
struct hub_link* link = link_create_internal(hub);
struct hub_link* link = (struct hub_link*) ptr;
link->connect_job = NULL;
// FIXME - no IPv6 support, no DNS resolution, no failover addresses etc.
int sd = net_socket_create(PF_INET, SOCK_STREAM, IPPROTO_TCP);
if (sd == -1)
LOG_DEBUG("link_connect_callback()");
switch (status)
{
hub_free(link);
case net_connect_status_ok:
link->connection = con;
net_con_reinitialize(link->connection, link_net_event, link, NET_EVENT_READ);
// FIXME: send handshake here
link_send_support(link);
break;
case net_connect_status_host_not_found:
case net_connect_status_no_address:
case net_connect_status_dns_error:
case net_connect_status_refused:
case net_connect_status_unreachable:
case net_connect_status_timeout:
case net_connect_status_socket_error:
// FIXME: Unable to connect - start timer and re-try connection establishment!
break;
}
}
struct link_address
{
char host[256];
uint16_t port;
};
static int link_parse_address(const char* arg, struct link_address* addr)
{
int port;
char* split;
memset(addr, 0, sizeof(struct link_address));
/* Split hostname and port (if possible) */
split = strrchr(arg, ':');
if (split == 0 || strlen(split) < 2 || strlen(split) > 6)
return 0;
/* Ensure port number is valid */
port = strtol(split+1, NULL, 10);
if (port <= 0 || port > 65535)
return 0;
memcpy(addr->host, arg, &split[0] - &arg[0]);
addr->port = port;
return 1;
}
struct hub_link* link_connect_uri(struct hub_info* hub, const char* address)
{
struct link_address link_address;
if (!link_parse_address(address, &link_address))
{
LOG_INFO("Invalid master hub link address");
return NULL;
}
link->connection = net_con_create();
net_con_initialize(link->connection, sd, link_net_event, link, 0);
return link_connect(hub, link_address.host, link_address.port);
}
struct hub_link* link_connect(struct hub_info* hub, const char* address, uint16_t port)
{
struct hub_link* link = link_create_internal(hub);
LOG_DEBUG("Connecting to master link at %s:%d...", address, port);
link->mode = link_mode_client;
link->connect_job = net_con_connect(address, port, link_connect_callback, link);
if (!link->connect_job)
{
// FIXME: Immediate failure!
LOG_DEBUG("Error connecting to master hub link.");
link_disconnect(link);
return NULL;
}
return link;
}

4
src/core/link.h
View File

@ -32,6 +32,7 @@ struct hub_link
struct ioq_send* send_queue;
struct ioq_recv* recv_queue;
struct net_connection* connection; /** Connection data */
struct net_connect_handle* connect_job; /** Only used when establishing a connection in client mode */
struct hub_info* hub;
int flags;
};
@ -44,7 +45,8 @@ extern struct hub_link* link_create(struct hub_info* hub, struct net_connection*
/**
* Connect this hub to an upstream server (act as a link client).
*/
extern struct hub_link* link_connect(struct hub_info* hub, const char* address);
extern struct hub_link* link_connect(struct hub_info* hub, const char* address, uint16_t port);
extern struct hub_link* link_connect_uri(struct hub_info* hub, const char* address);
/**
* Disconnect a link connection.