TCPStreamPusher: Enforce run number in ACK match input

tests/TCPImagePusherTest.cpp

@@ -16,6 +16,7 @@ TEST_CASE("TCPImageCommTest_2Writers_WithAck", "[TCP]") {
     x.Raw();
     x.PedestalG0Frames(0).NumTriggers(1).UseInternalPacketGenerator(false).IncidentEnergy_keV(12.4)
             .ImagesPerTrigger(nframes).Compression(CompressionAlgorithm::NO_COMPRESSION);
+    x.RunNumber(567);
 
     std::mt19937 g1(1387);
     std::uniform_int_distribution<uint16_t> dist;
@@ -45,6 +46,7 @@ TEST_CASE("TCPImageCommTest_2Writers_WithAck", "[TCP]") {
 
         StartMessage start{
             .images_per_file = images_per_file,
+            .run_number = x.GetRunNumber(),
             .write_master_file = true
         };
         EndMessage end{};
@@ -100,6 +102,7 @@ TEST_CASE("TCPImageCommTest_2Writers_WithAck", "[TCP]") {
                     ack.image_number = 0;
                     ack.processed_images = 0;
                     ack.error_code = TCPAckCode::None;
+                    REQUIRE(ack.run_number == x.GetRunNumber());
                     REQUIRE(puller[w]->SendAck(ack));
                     seen_start = true;
                     continue;