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Properly support handover retry

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1. If retrying handover, do not tear down the
   data connection on the source transport.
2. For handover fallback, fail fast the retry instead
   of letting it retry and fail with ON_OTHER_TRANSPORT
   error. This is no behavioral change but optimization
   only.

(clean cherry-pick)

Fix: 170796126
Test: Manual
Merged-In: I1ee4e638892bfdba19f368c5e2ae7ecaf2c7364c
Change-Id: I1ee4e638892bfdba19f368c5e2ae7ecaf2c7364c
This commit is contained in:
Jack Yu
2020-10-13 23:57:12 -07:00
committed by Daniel Bright
parent 8f2f4e14de
commit 2df361362d
1 changed files with 19 additions and 0 deletions
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19
telephony/java/android/telephony/data/DataCallResponse.java
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@@ -409,6 +409,25 @@ public final class DataCallResponse implements Parcelable {
}
};
/**
* Convert handover failure mode to string.
*
* @param handoverFailureMode Handover failure mode
* @return Handover failure mode in string
*
* @hide
*/
public static String failureModeToString(@HandoverFailureMode int handoverFailureMode) {
switch (handoverFailureMode) {
case HANDOVER_FAILURE_MODE_UNKNOWN: return "unknown";
case HANDOVER_FAILURE_MODE_LEGACY: return "legacy";
case HANDOVER_FAILURE_MODE_DO_FALLBACK: return "fallback";
case HANDOVER_FAILURE_MODE_NO_FALLBACK_RETRY_HANDOVER: return "retry handover";
case HANDOVER_FAILURE_MODE_NO_FALLBACK_RETRY_SETUP_NORMAL: return "retry setup new one";
default: return Integer.toString(handoverFailureMode);
}
}
/**
* Provides a convenient way to set the fields of a {@link DataCallResponse} when creating a new
* instance.