int32_t _broadcast_direct( struct iolayer * self, uint8_t index, struct session_manager * manager, struct message * msg )
{
uint32_t i = 0;
int32_t count = 0;
// 数据改造
if ( self->transform != NULL )
{
// 数据需要改造
char * buffer = NULL;
uint32_t nbytes = message_get_length( msg );
buffer = self->transform( self->context, message_get_buffer(msg), &nbytes );
if ( buffer == NULL )
{
// 数据改造失败
message_destroy( msg );
return -1;
}
if ( buffer != message_get_buffer(msg) )
{
// 数据改造成功
message_set_buffer( msg, buffer, nbytes );
}
}
for ( i = 0; i < sidlist_count(msg->tolist); ++i )
{
sid_t id = sidlist_get(msg->tolist, i);
if ( SID_INDEX(id) != index )
{
message_add_failure( msg, id );
continue;
}
struct session * session = session_manager_get( manager, id );
if ( unlikely(session == NULL) )
{
message_add_failure( msg, id );
continue;
}
if ( session_append(session, msg) >= 0 )
{
// 尝试单独发送
// 添加到发送队列成功
++count;
}
}
// 消息发送完毕, 直接销毁
if ( message_is_complete(msg) )
{
message_destroy( msg );
}
return count;
}
int32_t session_append( struct session * self, struct message * message )
{
int32_t rc = -1;
ioservice_t * service = &self->service;
char * buf = message_get_buffer( message );
uint32_t nbytes = message_get_length( message );
// 数据改造(加密 or 压缩)
char * buffer = service->transform( self->context, (const char *)buf, &nbytes );
if ( buffer == buf )
{
// 消息未进行改造
// 添加到会话的发送列表中
rc = QUEUE_PUSH(sendqueue)(&self->sendqueue, &message);
if ( rc == 0 )
{
// 注册写事件, 处理发送队列
session_add_event( self, EV_WRITE );
}
}
else if ( buffer != NULL )
{
// 消息改造成功
rc = _send( self, buffer, nbytes );
if ( rc >= 0 )
{
// 改造后的消息已经单独发送
message_add_success( message );
}
free( buffer );
}
if ( rc < 0 )
{
message_add_failure( message, self->id );
}
return rc;
}