package c.i.a.c.h2;

import androidx.annotation.Nullable;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/* compiled from: HttpDataSource */
public final class t {
    public final Map<String, String> a = new HashMap();
    @Nullable
    public Map<String, String> b;

    public synchronized Map<String, String> a() {
        if (this.b == null) {
            this.b = Collections.unmodifiableMap(new HashMap(this.a));
        }
        return this.b;
    }
}