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# XblMultiplayerSessionConstantsSetMeasurementServerAddressesJson

> XblMultiplayerSessionConstantsSetMeasurementServerAddressesJson

# XblMultiplayerSessionConstantsSetMeasurementServerAddressesJson

The set of potential server connection strings that should be evaluated.

## Syntax

```cpp theme={null}
HRESULT XblMultiplayerSessionConstantsSetMeasurementServerAddressesJson(  
         XblMultiplayerSessionHandle handle,  
         const char* measurementServerAddressesJson  
)  
```

### Parameters

*handle*   \_In\_\
Type: [XblMultiplayerSessionHandle](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/handles/xblmultiplayersessionhandle.md)

Handle to the multiplayer session.

*measurementServerAddressesJson*   \_In\_\
Type: char\*

The Json that represent the measurement server addresses. Example JSON: `{ "server farm a": { "secureDeviceAddress": "r5Y=" // Base-64 encoded secure-device-address }, "datacenter b" : { "secureDeviceAddress": "rwY=" } }`

### Return value

Type: HRESULT

HRESULT return code for this API operation.

## Requirements

**Header:** multiplayer\_c.h

**Library:** Microsoft.Xbox.Services.142.C.lib or Microsoft.Xbox.Services.143.C.lib

## See also

[multiplayer\_c](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members.md)


## Related topics

- [Using SmartMatch matchmaking](https://docs.xbox.com/services/xbox-services/multiplayer/matchmaking/concepts/live-matchmaking-how-tos.md)
- [multiplayer_c (contents)](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members.md)
- [XblMultiplayerSessionCurrentUserSetServerQosMeasurements](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessioncurrentusersetserverqosmeasurements.md)
- [XblMultiplayerSessionSetMatchmakingTargetSessionConstantsJson](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessionsetmatchmakingtargetsessionconstantsjson.md)
- [XblMultiplayerSessionConstantsSetCloudComputePackageJson](https://docs.xbox.com/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessionconstantssetcloudcomputepackagejson.md)