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/*++
Copyright(c) 1998,99 Microsoft Corporation
Module Name:
wlbsctrl.c
Abstract:
Windows Load Balancing Service (WLBS) API - specification. This set of API is for internal use only. another set of WMI API is provided for public use.
Author:
fengsun
--*/
#ifndef _WLBSCTRL_H_
#define _WLBSCTRL_H_
/* CONSTANTS */
#define CVY_MAX_HOST_NAME 100
#define WLBS_API_VER_MAJOR 2 /* WLBS control API major version. */
#define WLBS_API_VER_MINOR 0 /* WLBS control API minor version. */
#define WLBS_API_VER (WLBS_API_VER_MINOR | (WLBS_API_VER_MAJOR << 8))
/* WLBS control API version. */#define WLBS_PRODUCT_NAME "WLBS"
/* Default product name used for API
initialization. */
#define WLBS_MAX_HOSTS 32 /* Maximum number of cluster hosts. */
#define WLBS_MAX_RULES 32 /* Maximum number of port rules. */
#define WLBS_ALL_CLUSTERS 0 /* Used to specify all clusters in
WLBS...Set routines. */#define WLBS_LOCAL_CLUSTER 0 /* Used to specify that cluster
operations are to be performed on the local host. WLBS_LOCAL_HOST value below has to be used for the host argument when using WLBS_LOCAL_CLUSTER. */#define WLBS_LOCAL_HOST ((DWORD)-2) /* When specifying WLBS_LOCAL_CLUSTER,
this value should be used for the host argument. */#define WLBS_DEFAULT_HOST 0 /* Used to specify that remote cluster
operations are to be performed on the default host. */#define WLBS_ALL_HOSTS 0xffffffff
/* Used to specify that remote cluster
operation is to be performed on all hosts. */#define WLBS_ALL_PORTS 0xffffffff
/* Used to specify all load-balanced
port rules as the target for enable/disable/drain commands. */
/* WLBS return values. Windows Sockets errors are returned 'as-is'. */
#define WLBS_OK 1000 /* Success. */
#define WLBS_ALREADY 1001 /* Cluster mode is already stopped/
started, or traffic handling is already enabled/disabled on specified port. */#define WLBS_DRAIN_STOP 1002 /* Cluster mode stop or start operation
interrupted connection draining process. */#define WLBS_BAD_PARAMS 1003 /* Cluster mode could not be started
due to configuration problems (bad registry parameters) on the target host. */#define WLBS_NOT_FOUND 1004 /* Port number not found among port
rules. */#define WLBS_STOPPED 1005 /* Cluster mode is stopped on the
host. */#define WLBS_CONVERGING 1006 /* Cluster is converging. */
#define WLBS_CONVERGED 1007 /* Cluster or host converged
successfully. */#define WLBS_DEFAULT 1008 /* Host is converged as default host. */
#define WLBS_DRAINING 1009 /* Host is draining after
WLBSDrainStop command. */#define WLBS_PRESENT 1010 /* WLBS is installed on this host.
Local operations possible. */#define WLBS_REMOTE_ONLY 1011 /* WLBS is not installed on this host
or is not functioning. Only remote control operations can be carried out. */#define WLBS_LOCAL_ONLY 1012 /* WinSock failed to load. Only local
operations can be carried out. */#define WLBS_SUSPENDED 1013 /* Cluster control operations are
suspended. */#define WLBS_DISCONNECTED 1014 /* Media is disconnected. */
#define WLBS_REBOOT 1050 /* Reboot required in order for config
changes to take effect. */#define WLBS_INIT_ERROR 1100 /* Error initializing control module. */
#define WLBS_BAD_PASSW 1101 /* Specified remote control password
was not accepted by the cluster. */#define WLBS_IO_ERROR 1102 /* Local I/O error opening or
communicating with WLBS driver. */#define WLBS_TIMEOUT 1103 /* Timed-out awaiting response from
remote host. */#define WLBS_PORT_OVERLAP 1150 /* Port rule overlaps with existing
port rules. */#define WLBS_BAD_PORT_PARAMS 1151 /* Invalid parameter(s) in port rule. */
#define WLBS_MAX_PORT_RULES 1152 /* Maximum number of port rules reached. */
#define WLBS_TRUNCATED 1153 /* Return value truncated */
#define WLBS_REG_ERROR 1154 /* Error while accessing the registry */
/* Filtering modes for port rules */
#define WLBS_SINGLE 1 /* single server mode */
#define WLBS_MULTI 2 /* multi-server mode (load balanced) */
#define WLBS_NEVER 3 /* mode for never handled by this server */
#define WLBS_ALL 4 /* all server mode */
/* Protocol qualifiers for port rules */
#define WLBS_TCP 1 /* TCP protocol */
#define WLBS_UDP 2 /* UDP protocol */
#define WLBS_TCP_UDP 3 /* TCP or UDP protocols */
/* Server affinity values for multiple filtering mode */
#define WLBS_AFFINITY_NONE 0 /* no affinity (scale single client) */
#define WLBS_AFFINITY_SINGLE 1 /* single client affinity */
#define WLBS_AFFINITY_CLASSC 2 /* Class C affinity */
/* TYPES */
/* Response value type returned by each of the cluster hosts during remote
operation. */
typedef struct{ DWORD id; /* Priority ID of the responding cluster
host */ DWORD address; /* Dedicated IP address */ DWORD status; /* Status return value */ DWORD reserved1; /* Reserved for future use */ PVOID reserved2; WCHAR hostname[CVY_MAX_HOST_NAME + 1];}WLBS_RESPONSE, * PWLBS_RESPONSE;
/* MACROS */
/* Local operations */
#define WlbsLocalQuery(host_map) \
WlbsQuery (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL, \ host_map, NULL)
#define WlbsLocalSuspend() \
WlbsSuspend (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL)
#define WlbsLocalResume() \
WlbsResume (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL)
#define WlbsLocalStart() \
WlbsStart (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL)
#define WlbsLocalStop() \
WlbsStop (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL)
#define WlbsLocalDrainStop() \
WlbsDrainStop (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL)
#define WlbsLocalEnable(port) \
WlbsEnable (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL, port)
#define WlbsLocalDisable(port) \
WlbsDisable (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL, port)
#define WlbsLocalDrain(port) \
WlbsDrain (WLBS_LOCAL_CLUSTER, WLBS_LOCAL_HOST, NULL, NULL, port)
/* Single host remote operations */
#define WlbsHostQuery(cluster, host, host_map) \
WlbsQuery (cluster, host, NULL, NULL, host_map, NULL)
#define WlbsHostSuspend(cluster, host) \
WlbsSuspend (cluster, host, NULL, NULL)
#define WlbsHostResume(cluster, host) \
WlbsResume (cluster, host, NULL, NULL)
#define WlbsHostStart(cluster, host) \
WlbsStart (cluster, host, NULL, NULL)
#define WlbsHostStop(cluster, host) \
WlbsStop (cluster, host, NULL, NULL)
#define WlbsHostDrainStop(cluster, host) \
WlbsDrainStop (cluster, host, NULL, NULL)
#define WlbsHostEnable(cluster, host, port) \
WlbsEnable (cluster, host, NULL, NULL, port)
#define WlbsHostDisable(cluster, host, port) \
WlbsDisable (cluster, host, NULL, NULL, port)
#define WlbsHostDrain(cluster, host, port) \
WlbsDrain (cluster, host, NULL, NULL, port)
/* Cluster-wide remote operations */
#define WlbsClusterQuery(cluster, response, num_hosts, host_map) \
WlbsQuery (cluster, WLBS_ALL_HOSTS, response, num_hosts, \ host_map, NULL)
#define WlbsClusterSuspend(cluster, response, num_hosts) \
WlbsSuspend (cluster, WLBS_ALL_HOSTS, response, num_hosts)
#define WlbsClusterResume(cluster, response, num_hosts) \
WlbsResume (cluster, WLBS_ALL_HOSTS, response, num_hosts)
#define WlbsClusterStart(cluster, response, num_hosts) \
WlbsStart (cluster, WLBS_ALL_HOSTS, response, num_hosts)
#define WlbsClusterStop(cluster, response, num_hosts) \
WlbsStop (cluster, WLBS_ALL_HOSTS, response, num_hosts)
#define WlbsClusterDrainStop(cluster, response, num_hosts) \
WlbsDrainStop (cluster, WLBS_ALL_HOSTS, response, num_hosts)
#define WlbsClusterEnable(cluster, response, num_hosts, port) \
WlbsEnable (cluster, WLBS_ALL_HOSTS, response, num_hosts, port)
#define WlbsClusterDisable(cluster, response, num_hosts, port) \
WlbsDisable (cluster, WLBS_ALL_HOSTS, response, num_hosts, port)
#define WlbsClusterDrain(cluster, response, num_hosts, port) \
WlbsDrain (cluster, WLBS_ALL_HOSTS, response, num_hosts, port)
/* PROCEDURES */
/*************************************
Initialization and support routines *************************************/
#ifdef __cplusplus
extern "C" {#endif
extern DWORD WINAPI WlbsInit( WCHAR* Reservered1, /* IN - for backward compatibility */ DWORD version, /* IN - Pass WLBS_API_VER value. */ PVOID Reservered2 /* IN - Pass NULL. Reserved for future use. */);/*
Initialize WLBS control module.
returns: WLBS_PRESENT => WLBS is installed on this host. Local and remote control operations can be executed. WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.*/
/******************************************************************************
Cluster control routines:
The following routines can be used to control individual cluster hosts or the entire cluster, both locally and remotely. They are designed to be as generic as possible. Macros, defined above, are designed to provide simpler interfaces for particular types of operations.
It is highly recommended to make all response arrays of size WLBS_MAX_HOSTS to make your implementation independent of the actual cluster size.
Please note that cluster address has to correspond to the primary cluster address as entered in the WLBS Setup Dialog. WLBS will not recognize control messages sent to dedicated or additional multi-homed cluster addresses. ******************************************************************************/
extern DWORD WINAPI WlbsQuery( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_DEFAULT_HOST for current default, WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts, /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */ PDWORD host_map, /* OUT - Bitmap with ones in the bit positions
representing priority IDs of the hosts currently present in the cluster. NULL if host map information is not needed. */ PVOID reserved /* IN - Pass NULL. Reserved for future use. */);/*
Query status of specified host or all cluster hosts.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_SUSPENDED => Cluster mode control suspended. WLBS_STOPPED => Cluster mode on the host is stopped. WLBS_CONVERGING => Host is converging. WLBS_DRAINING => Host is draining. WLBS_CONVERGED => Host converged. WLBS_DEFAULT => Host converged as default host.
Cluster-wide:
<1..32> => Number of active cluster hosts when the cluster is converged. WLBS_SUSPENDED => Entire cluster is suspended. All cluster hosts reported as being suspended. WLBS_STOPPED => Entire cluster is stopped. All cluster hosts reported as being stopped. WLBS_DRAINING => Entire cluster is draining. All cluster hosts reported as being stopped or draining. WLBS_CONVERGING => Cluster is converging. At least one cluster host reported its state as converging.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. If this value is returned when accessing default host (using host priority ID WLBS_DEFAULT_HOST) it might mean that entire cluster is stopped and there was no default host to respond to the query. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsSuspend( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */);/*
Suspend cluster operation control on specified host or all cluster hosts.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => Cluster mode control suspended. WLBS_ALREADY => Cluster mode control already suspended. WLBS_STOPPED => Cluster mode was stopped and control suspended. WLBS_DRAIN_STOP => Suspending cluster mode control interrupted ongoing connection draining.
Cluster-wide:
WLBS_OK => Cluster mode control suspended on all hosts.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by at least one member of the cluster. WLBS_TIMEOUT => No response received. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsResume( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */);/*
Resume cluster operation control on specified host or all cluster hosts.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => Cluster mode control resumed. WLBS_ALREADY => Cluster mode control already resumed.
Cluster-wide:
WLBS_OK => Cluster mode control resumed on all hosts.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsStart( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */);/*
Start cluster operations on specified host or all cluster hosts.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => Cluster mode started. WLBS_ALREADY => Cluster mode already started. WLBS_SUSPENDED => Cluster mode control suspended. WLBS_DRAIN_STOP => Starting cluster mode interrupted ongoing connection draining. WLBS_BAD_PARAMS => Could not start cluster mode due to invalid configuration parameters.
Cluster-wide:
WLBS_OK => Cluster mode started on all hosts. WLBS_BAD_PARAMS => Could not start cluster mode on at least one host due to invalid configuration parameters. WLBS_SUSPENDED => If at least one host is suspended.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsStop( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_DEFAULT_HOST for current default host, WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */);/*
Stop cluster operations on specified host or all cluster hosts.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => Cluster mode stopped. WLBS_ALREADY => Cluster mode already stopped. WLBS_SUSPENDED => Cluster mode control suspended. WLBS_DRAIN_STOP => Starting cluster mode interrupted ongoing connection draining.
Cluster-wide:
WLBS_OK => Cluster mode stopped on all hosts. WLBS_SUSPENDED => At least one host is suspended.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. If this value is returned when accessing default host (using host priority ID WLBS_DEFAULT_HOST) it might mean that entire cluster is stopped and there was no default host to respond to the command. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsDrainStop( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_DEFAULT_HOST for current default host, WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */);/*
Enter draining mode on specified host or all cluster hosts. New connections will not be accepted. Cluster mode will be stopped when all existing connections finish. While draining, host will participate in convergence and remain part of the cluster.
Draining mode can be interrupted by performing WlbsStop or WlbsStart. WlbsEnable, WlbsDisable and WlbsDrain commands cannot be executed while the host is draining.
Note that this command is NOT equivalent to doing WlbsDrain with WLBS_ALL_PORTS parameter followed by WlbsStop. WlbsDrainStop affects all ports, not just the ones specified in the multiple host filtering mode port rules.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => Host entered draining mode. WLBS_ALREADY => Host is already draining. WLBS_SUSPENDED => Cluster mode control suspended. WLBS_STOPPED => Cluster mode is already stopped.
Cluster-wide:
WLBS_OK => Draining mode entered on all hosts. WLBS_STOPPED => Cluster mode is already stopped on all hosts. WLBS_SUSPENDED => At least one host is suspended.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. If this value is returned when accessing default host (using host priority ID WLBS_DEFAULT_HOST) it might mean that entire cluster is stopped and there was no default host to respond to the command. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsEnable( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_DEFAULT_HOST for current default host, WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts, /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */ DWORD vip, /* IN - Virtual IP Address to specify the target port
rule or WLBS_EVERY_VIP */ DWORD port /* IN - Port number to specify the target port
rule or WLBS_ALL_PORTS. */);/*
Enable traffic handling for rule containing the specified port on specified host or all cluster hosts. Only rules that are set for multiple host filtering mode are affected.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => Port rule enabled. WLBS_ALREADY => Port rule already enabled. WLBS_SUSPENDED => Cluster mode control suspended. WLBS_NOT_FOUND => No port rule containing specified port found. WLBS_STOPPED => Cannot start handling traffic since cluster mode is stopped. WLBS_DRAINING => Cannot enable handling traffic since host is draining.
Cluster-wide:
WLBS_OK => Port rule enabled on all hosts with cluster mode started. WLBS_NOT_FOUND => At least one host could not find port rule containing specified port. WLBS_SUSPENDED => At least one host is suspended.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. If this value is returned when accessing default host (using host priority ID WLBS_DEFAULT_HOST) it might mean that entire cluster is stopped and there was no default host to respond to the command. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsDisable( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_DEFAULT_HOST for current default host, WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts, /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */ DWORD vip, /* IN - Virtual IP Address to specify the target port
rule or WLBS_EVERY_VIP */ DWORD port /* IN - Port number to specify the target port
rule or WLBS_ALL_PORTS. */);/*
Disable ALL traffic handling for rule containing the specified port on specified host or all cluster hosts. Only rules that are set for multiple host filtering mode are affected.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => All traffic handling on the port rule is disabled. WLBS_ALREADY => Port rule already disabled. WLBS_SUSPENDED => Cluster mode control suspended. WLBS_NOT_FOUND => No port rule containing specified port found. WLBS_STOPPED => Cannot stop handling traffic since cluster mode is stopped. WLBS_DRAINING => Cannot stop handling traffic since host is draining.
Cluster-wide:
WLBS_OK => Port rule disabled on all hosts with cluster mode started. WLBS_NOT_FOUND => At least one host could not find port rule containing specified port. WLBS_SUSPENDED => At least one host is suspended.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. If this value is returned when accessing default host (using host priority ID WLBS_DEFAULT_HOST) it might mean that entire cluster is stopped and there was no default host to respond to the command. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
extern DWORD WINAPI WlbsDrain( DWORD cluster, /* IN - Cluster address or WLBS_LOCAL_CLUSTER
for local or this cluster operation. */ DWORD host, /* IN - Host's dedicated address, priority ID,
WLBS_DEFAULT_HOST for current default host, WLBS_ALL_HOSTS for all hosts, or WLBS_LOCAL_HOST for local operation. */ PWLBS_RESPONSE response, /* OUT - Array of response values from each of
the hosts or NULL if response values are not desired or operations are being performed locally. */ PDWORD num_hosts, /* IN - Size of the response array or NULL if
response array is not specified and host count is not desired. OUT - Number of responses received. Note that this value can be larger than the size of the response array. In this case only the first few responses that fit in the array are returned. */ DWORD vip, /* IN - Virtual IP Address to specify the target port
rule or WLBS_EVERY_VIP */ DWORD port /* IN - Port number to specify the target port
rule or WLBS_ALL_PORTS. */);/*
Disable NEW traffic handling for rule containing the specified port on specified host or all cluster hosts. Only rules that are set for multiple host filtering mode are affected.
returns: For local operations or remote operations on individual cluster hosts, return value represents status value returned by the target host. For cluster-wide remote operations, return value represents the summary of the return values from all cluster hosts. Individual host responses, corresponding to a single-host, return values are recorded in the response array.
WLBS_INIT_ERROR => Error initializing control module. Cannot perform control operations.
Single-host:
WLBS_OK => New traffic handling on the port rule is disabled. WLBS_ALREADY => Port rule already being drained. WLBS_SUSPENDED => Cluster mode control suspended. WLBS_NOT_FOUND => No port rule containing specified port found. WLBS_STOPPED => Cannot stop handling traffic since cluster mode is stopped. WLBS_DRAINING => Cannot stop handling traffic since host is draining.
Cluster-wide:
WLBS_OK => Port rule disabled on all hosts with cluster mode started. WLBS_NOT_FOUND => At least one host could not find port rule containing specified port. WLBS_SUSPENDED => At least one host is suspended.
Remote:
WLBS_BAD_PASSW => Specified password was not accepted by the cluster. WLBS_TIMEOUT => No response received. If this value is returned when accessing default host (using host priority ID WLBS_DEFAULT_HOST) it might mean that entire cluster is stopped and there was no default host to respond to the command. WLBS_LOCAL_ONLY => WinSock failed to load. Only local operations can be carried out. WSA... => Specified Winsock error occurred when communicating with the cluster.
Local:
WLBS_REMOTE_ONLY => WLBS is not installed on this system or is not functioning properly. Only remote operations can be carried out. WLBS_IO_ERROR => I/O error opening or communicating with WLBS driver. WLBS might not be loaded.*/
/******************************************************************************
"Sticky" options for remote operations. Parameters set by these routines will apply for all subsequent remote cluster control operations for the specified cluster. Use WLBS_ALL_CLUSTERS to adjust parameters for all clusters. ******************************************************************************/
extern VOID WINAPI WlbsPortSet( DWORD cluster, /* IN - Cluster address or WLBS_ALL_CLUSTERS
for all clusters. */ WORD port /* IN - UDP port or 0 to revert to the
default (2504). */);/*
Set UDP port that will be used for sending control messages to the cluster.
returns:*/
extern VOID WINAPI WlbsPasswordSet( DWORD cluster, /* IN - Cluster address or WLBS_ALL_CLUSTERS
for all clusters. */ WCHAR* password /* IN - Password or NULL to revert to the
default (no password). */);/*
Set password to be used in the subsequent control messages sent to the cluster.
returns:*/
extern VOID WINAPI WlbsCodeSet( DWORD cluster, /* IN - Cluster address or WLBS_ALL_CLUSTERS
for all clusters. */ DWORD password /* IN - Password or 0 to revert to the
default (no password). */);/*
Set password to be used in the subsequent control messages sent to the cluster.
returns:*/
extern VOID WINAPI WlbsDestinationSet( DWORD cluster, /* IN - Cluster address or WLBS_ALL_CLUSTERS
for all clusters. */ DWORD dest /* IN - Destination address or 0 to revert to
the default (same as the cluster address specified during control calls). */);/*
Set the destination address to send cluster control messages to. This parameter in only supplied for debugging or special purposes. By default all control messages are sent to the cluster primary address specified when invoking cluster control routines.
returns:*/
extern VOID WINAPI WlbsTimeoutSet( DWORD cluster, /* IN - Cluster address or WLBS_ALL_CLUSTERS
for all clusters. */ DWORD milliseconds /*IN - Number of milliseconds or 0 to revert
to the default (10 seconds). */);/*
Set number of milliseconds to wait for replies from cluster hosts when performing remote operations.
returns:*/
DWORD WINAPI WlbsEnumClusters(OUT DWORD* pdwAddresses, OUT DWORD* pdwNum);
DWORD WINAPI WlbsGetAdapterGuid(IN DWORD cluster, OUT GUID* pAdapterGuid);
/* For connection notification ... */
DWORD WINAPI WlbsConnectionUp( DWORD dwServerIp, WORD wServerPort, DWORD dwClientIp, WORD wClientPort, BYTE Protocol, PULONG NLBStatusEx);
DWORD WINAPI WlbsConnectionDown( DWORD dwServerIp, WORD wServerPort, DWORD dwClientIp, WORD wClientPort, BYTE Protocol, PULONG NLBStatusEx);
#ifdef __cplusplus
} /* extern "C" */#endif
#endif /* _WLBSCTRL_H_ */
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