Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Ctors](https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#pubctors) \| [Methods](https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#pubmethods) \| [Inherited Methods](https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#inhmethods)
# TransportModeChildSessionParams.Builder
*** ** * ** ***
` public static final class TransportModeChildSessionParams.Builder `
` extends https://developer.android.com/reference/java/lang/Object ` ` `
|---|---|
| [java.lang.Object](https://developer.android.com/reference/java/lang/Object) ||
| ↳ | android.net.ipsec.ike.TransportModeChildSessionParams.Builder |
*** ** * ** ***
This class can be used to incrementally construct a `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams`.
## Summary
| ### Public constructors ||
|---|---|
| ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#Builder()() ` Create a Builder for negotiating a transport mode Child Session. |
| ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#Builder(android.net.ipsec.ike.TransportModeChildSessionParams)(https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams childParams) ` Construct Builder from the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` object. |
| ### Public methods ||
|---|---|
| ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#addChildSaProposal(android.net.ipsec.ike.ChildSaProposal)(https://developer.android.com/reference/android/net/ipsec/ike/ChildSaProposal proposal) ` Adds a Child SA proposal to the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` being built. |
| ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#addInboundTrafficSelectors(android.net.ipsec.ike.IkeTrafficSelector)(https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector trafficSelector) ` Adds an inbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector` to the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` being built. |
| ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#addOutboundTrafficSelectors(android.net.ipsec.ike.IkeTrafficSelector)(https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector trafficSelector) ` Adds an outbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector` to the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` being built. |
| ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` | ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#build()() ` Validates and builds the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams`. |
| ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | ` https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder#setLifetimeSeconds(int,%20int)(int hardLifetimeSeconds, int softLifetimeSeconds) ` Sets hard and soft lifetimes. |
### Inherited methods
From class ` https://developer.android.com/reference/java/lang/Object ` ` https://developer.android.com/reference/java/lang/Object` ` https://developer.android.com/reference/java/lang/Object#clone()() `
Creates and returns a copy of this object.
` boolean` ` https://developer.android.com/reference/java/lang/Object#equals(java.lang.Object)(https://developer.android.com/reference/java/lang/Object obj) `
Indicates whether some other object is "equal to" this one.
` void` ` https://developer.android.com/reference/java/lang/Object#finalize()() `
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
` final https://developer.android.com/reference/java/lang/Class` ` https://developer.android.com/reference/java/lang/Object#getClass()() `
Returns the runtime class of this `Object`.
` int` ` https://developer.android.com/reference/java/lang/Object#hashCode()() `
Returns a hash code value for the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#notify()() `
Wakes up a single thread that is waiting on this object's monitor.
` final void` ` https://developer.android.com/reference/java/lang/Object#notifyAll()() `
Wakes up all threads that are waiting on this object's monitor.
` https://developer.android.com/reference/java/lang/String` ` https://developer.android.com/reference/java/lang/Object#toString()() `
Returns a string representation of the object.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long,%20int)(long timeoutMillis, int nanos) `
Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait(long)(long timeoutMillis) `
Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*, or until a certain amount of real time has elapsed.
` final void` ` https://developer.android.com/reference/java/lang/Object#wait()() `
Causes the current thread to wait until it is awakened, typically by being *notified* or *interrupted*.
## Public constructors
### Builder
Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public Builder ()
```
Create a Builder for negotiating a transport mode Child Session.
### Builder
Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public Builder (TransportModeChildSessionParams childParams)
```
Construct Builder from the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` object.
| Parameters ||
|---|---|
| `childParams` | `TransportModeChildSessionParams`: the object this Builder will be constructed with. This value cannot be `null`.
|
## Public methods
### addChildSaProposal
Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public TransportModeChildSessionParams.Builder addChildSaProposal (ChildSaProposal proposal)
```
Adds a Child SA proposal to the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` being built.
| Parameters ||
|---|---|
| `proposal` | `ChildSaProposal`: Child SA proposal. This value cannot be `null`.
|
| Returns ||
|---|---|
| `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | Builder this, to facilitate chaining. This value cannot be `null`.
|
### addInboundTrafficSelectors
Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public TransportModeChildSessionParams.Builder addInboundTrafficSelectors (IkeTrafficSelector trafficSelector)
```
Adds an inbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector` to the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` being built.
This method allows callers to limit the inbound traffic transmitted over the Child Session to the given range. The IKE server may further narrow the range. Callers should refer to `https://developer.android.com/reference/android/net/ipsec/ike/ChildSessionConfiguration` for the negotiated traffic selectors.
If no inbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector` is provided, a default value will be used that covers all IP addresses and ports.
| Parameters ||
|---|---|
| `trafficSelector` | `IkeTrafficSelector`: the inbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector`. This value cannot be `null`.
|
| Returns ||
|---|---|
| `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | Builder this, to facilitate chaining. This value cannot be `null`.
|
### addOutboundTrafficSelectors
Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public TransportModeChildSessionParams.Builder addOutboundTrafficSelectors (IkeTrafficSelector trafficSelector)
```
Adds an outbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector` to the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` being built.
This method allows callers to limit the outbound traffic transmitted over the Child Session to the given range. The IKE server may further narrow the range. Callers should refer to `https://developer.android.com/reference/android/net/ipsec/ike/ChildSessionConfiguration` for the negotiated traffic selectors.
If no outbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector` is provided, a default value will be used that covers all IP addresses and ports.
| Parameters ||
|---|---|
| `trafficSelector` | `IkeTrafficSelector`: the outbound `https://developer.android.com/reference/android/net/ipsec/ike/IkeTrafficSelector`. This value cannot be `null`.
|
| Returns ||
|---|---|
| `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | Builder this, to facilitate chaining. This value cannot be `null`.
|
### build
Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public TransportModeChildSessionParams build ()
```
Validates and builds the `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams`.
| Returns ||
|---|---|
| `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams` | the validated `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams`. This value cannot be `null`.
|
### setLifetimeSeconds
Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)
```
public TransportModeChildSessionParams.Builder setLifetimeSeconds (int hardLifetimeSeconds,
int softLifetimeSeconds)
```
Sets hard and soft lifetimes.
Lifetimes will not be negotiated with the remote IKE server.
| Parameters ||
|---|---|
| `hardLifetimeSeconds` | `int`: number of seconds after which Child SA will expire. Defaults to 7200 seconds (2 hours). Considering IPsec packet lifetime, IKE library requires hard lifetime to be a value from 300 seconds (5 minutes) to 14400 seconds (4 hours), inclusive. Value is between `https://developer.android.com/` and `https://developer.android.com/` inclusive
|
| `softLifetimeSeconds` | `int`: number of seconds after which Child SA will request rekey. Defaults to 3600 seconds (1 hour). MUST be at least 120 seconds (2 minutes), and at least 60 seconds (1 minute) shorter than the hard lifetime. Value is between `https://developer.android.com/` and `https://developer.android.com/` inclusive
|
| Returns ||
|---|---|
| `https://developer.android.com/reference/android/net/ipsec/ike/TransportModeChildSessionParams.Builder` | This value cannot be `null`.
|