|  | @@ -187,7 +187,7 @@ int main(int argc, char** argv) {
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				|  |  |    op = ops;
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				|  |  |    op->op = GRPC_OP_SEND_INITIAL_METADATA;
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				|  |  |    op->data.send_initial_metadata.count = 0;
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				|  |  | -  op->flags = 0;
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				|  |  | +  op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY;
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				|  |  |    op->reserved = nullptr;
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				|  |  |    op++;
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				|  |  |    GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call1, ops,
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				|  | @@ -263,7 +263,7 @@ int main(int argc, char** argv) {
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				|  |  |    op = ops;
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				|  |  |    op->op = GRPC_OP_SEND_INITIAL_METADATA;
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				|  |  |    op->data.send_initial_metadata.count = 0;
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				|  |  | -  op->flags = 0;
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				|  |  | +  op->flags = GRPC_INITIAL_METADATA_WAIT_FOR_READY;
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				|  |  |    op->reserved = nullptr;
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				|  |  |    op++;
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				|  |  |    GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call2, ops,
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