Compilation Error due to 'MessageOptions' Type Conflict between 'Google.Protobuf' and 'WireMock.Net' #585

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opened 2025-12-29 15:27:39 +01:00 by adam · 6 comments

adam commented 2025-12-29 15:27:39 +01:00

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Originally created by @iamzhaoxu on GitHub (Mar 11, 2024).

Originally assigned to: @StefH on GitHub.

Describe the bug

During the compilation of my project, an error arises because of a type conflict involving 'MessageOptions' originating from two distinct libraries: 'Google.Protobuf' and 'protobuf-net.Reflection'.

The project references both 'WireMock.Net' and 'Google.Protobuf'. Upon updating both libraries to version 1.5.49 for 'WireMock.Net' and version 3.25.3 for 'Google.Protobuf', this compilation error surfaces. The conflict emerges as 'WireMock.Net' starts utilizing 'protobuf-net.Reflection', thereby resulting in the existence of the 'MessageOptions' class within the same namespace in both libraries.

Expected behavior:

Compilation should proceed without errors, ensuring the successful build of the project.

Test to reproduce

Ensure project references 'WireMock.Net' and 'Google.Protobuf'.
Update 'WireMock.Net' to version 1.5.49 and 'Google.Protobuf' to version 3.25.3.
Attempt to compile the project.
Encounter the error message due to the type conflict with 'MessageOptions'.

Originally created by @iamzhaoxu on GitHub (Mar 11, 2024). Originally assigned to: @StefH on GitHub. ### Describe the bug During the compilation of my project, an error arises because of a type conflict involving 'MessageOptions' originating from two distinct libraries: 'Google.Protobuf' and 'protobuf-net.Reflection'. The project references both 'WireMock.Net' and 'Google.Protobuf'. Upon updating both libraries to version 1.5.49 for 'WireMock.Net' and version 3.25.3 for 'Google.Protobuf', this compilation error surfaces. The conflict emerges as 'WireMock.Net' starts utilizing 'protobuf-net.Reflection', thereby resulting in the existence of the 'MessageOptions' class within the same namespace in both libraries. ### Expected behavior: Compilation should proceed without errors, ensuring the successful build of the project. ### Test to reproduce Ensure project references 'WireMock.Net' and 'Google.Protobuf'. Update 'WireMock.Net' to version 1.5.49 and 'Google.Protobuf' to version 3.25.3. Attempt to compile the project. Encounter the error message due to the type conflict with 'MessageOptions'. 

adam added the bug label 2025-12-29 15:27:39 +01:00

adam closed this issue 2025-12-29 15:27:40 +01:00

adam commented 2025-12-29 15:27:40 +01:00

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@StefH commented on GitHub (Mar 20, 2024):

@iamzhaoxu

Can you please provide an example project?

Because I cannot reproduce this problem. I also have a unit test project which uses both:

• https://github.com/WireMock-Net/WireMock.Net/tree/master/test/WireMock.Net.Tests

@StefH commented on GitHub (Mar 20, 2024): @iamzhaoxu Can you please provide an example project? Because I cannot reproduce this problem. I also have a unit test project which uses both: - https://github.com/WireMock-Net/WireMock.Net/tree/master/test/WireMock.Net.Tests

adam commented 2025-12-29 15:27:41 +01:00

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@StefH commented on GitHub (Apr 2, 2024):

@iamzhaoxu
Can you please provide an example project ?

@StefH commented on GitHub (Apr 2, 2024): @iamzhaoxu Can you please provide an example project ?

adam commented 2025-12-29 15:27:41 +01:00

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@StefH commented on GitHub (May 13, 2024):

@iamzhaoxu
Can you please provide an example project which shows this issue?

@StefH commented on GitHub (May 13, 2024): @iamzhaoxu Can you please provide an example project which shows this issue?

adam commented 2025-12-29 15:27:41 +01:00

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@iamzhaoxu commented on GitHub (May 27, 2024):

@StefH I'm sorry for not getting back to you sooner. I forgot this thread.
The sample code below can trigger the issue
ConsoleApp1.zip
Once you build the solution, you will see the error.

Also, I asked the same question in this thread as well and this is for your reference https://github.com/protobuf-net/protobuf-net/issues/1137

@iamzhaoxu commented on GitHub (May 27, 2024): @StefH I'm sorry for not getting back to you sooner. I forgot this thread. The sample code below can trigger the issue [ConsoleApp1.zip](https://github.com/WireMock-Net/WireMock.Net/files/15452346/ConsoleApp1.zip) Once you build the solution, you will see the error. Also, I asked the same question in this thread as well and this is for your reference https://github.com/protobuf-net/protobuf-net/issues/1137

adam commented 2025-12-29 15:27:42 +01:00

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@StefH commented on GitHub (May 5, 2025):

https://github.com/WireMock-Net/WireMock.Net/pull/1291

@StefH commented on GitHub (May 5, 2025): https://github.com/WireMock-Net/WireMock.Net/pull/1291

adam commented 2025-12-29 15:27:42 +01:00

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@StefH commented on GitHub (May 6, 2025):

@iamzhaoxu
Please upgrade to 1.8.2

@StefH commented on GitHub (May 6, 2025): @iamzhaoxu Please upgrade to 1.8.2

adam referenced this issue 2025-12-29 15:34:39 +01:00

[PR #585] [MERGED] Fix response date header #984

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Reference: starred/WireMock.Net-wiremock#585