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fix: include instance name in Login7 message #1668

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@TPVallancourt TPVallancourt commented Oct 29, 2024

Fix for #1563

  1. Write FeatureExtensions to the end of the Login7 Packet matching the behavior of the go-mssqldb library. The header must still be written in the same place as it was previously. The value in the header is adjusted to reflect that FeatureExtensions now appear at the end of the packet
  2. When receiving routing data from the server, save a new string, instance. Previously we just saved server which removes the instance name from the redirect URL. This is the proper string for TLS negotiation, but Login7 needs the server and the instance together.

@TPVallancourt TPVallancourt changed the title Move FeatureExtensions to end of Login7 Packet + use full server name for Login7 fix: Move FeatureExtensions to end of Login7 Packet + use full server name for Login7 Oct 29, 2024
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Hi @arthurschreiber , are there any other things I need to do get this incorporated into the library?

@arthurschreiber arthurschreiber changed the title fix: Move FeatureExtensions to end of Login7 Packet + use full server name for Login7 fix: include instance name in Login7 message Nov 10, 2024
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@TPVallancourt This seems to break the appveyor build on Windows 🤔

@@ -2484,7 +2485,7 @@ class Connection extends EventEmitter {
}

payload.hostname = this.config.options.workstationId || os.hostname();
payload.serverName = this.routingData ? this.routingData.server : this.config.server;
payload.serverName = this.routingData ? `${this.routingData.server}\\${this.routingData.instance}` : this.config.server;
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Is instance here guaranteed to always be a non-empty string? What happens if it's empty?

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