Enforce request cardinality for unary-request calls also for the case of zero request messages being sent. #392
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… of zero request messages being sent. Otherwise, the server will never respond to a call that gets closed without the client sending a response.
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/cc @glbrntt for review (can't request a review for you through the GitHub "Reviewers" list for some reason) |
…- it's easier to test this via HTTP1 than having to set up an HTTP2 client.
glbrntt
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Mar 5, 2019
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@glbrntt I've slightly extended the scope of this PR; please take another look. |
glbrntt
reviewed
Mar 5, 2019
Sources/SwiftGRPCNIO/CallHandlers/BidirectionalStreamingCallHandler.swift
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glbrntt
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Mar 5, 2019
rebello95
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Mar 5, 2019
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| private func gRPCWebOKTrailers() -> Data { | ||
| var data = "grpc-status: 0\r\ngrpc-message: OK".data(using: .utf8)! | ||
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rebello95
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Mar 5, 2019
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@rebello95 please take another look, especially at the unresolved conversations. Feel free to squash-and-merge if you are satisfied with the current revision. |
rebello95
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Mar 5, 2019
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| private func gRPCWebOKTrailers() -> Data { | ||
| var data = "grpc-status: 0\r\ngrpc-message: OK".data(using: .utf8)! | ||
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Looks like I forgot to actually commit and push my fixes, sorry about that! @rebello95, please take one final look. |
rebello95
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Mar 6, 2019
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Otherwise, the server will never respond to a call that gets closed without the client sending a response.
In addition, we introduce a method
sendErrorStatus(happy to discuss naming) onBaseCallHandlerthat sends an error status to the client while ensuring that all call context promises are fulfilled. This method is required (and needs to be overridden) because only the concrete call subclass knows which promises need to be fulfilled.