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https://issues.apache.org/jira/browse/CASSGO-97?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18040336#comment-18040336
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Bohdan Siryk commented on CASSGO-97:
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> And is it gocql v2.0.0?
Yes
I got this error when trying to connect via my Go app through the proxy:
{code:java}
2025/11/24 15:51:09 DBG gocql: Failed to discover protocol version using host.
host_addr=127.0.0.1 host_id= err=Unknown type of response to startup frame:
gocql.errorFrame
panic: gocql: unable to create session: unable to discover protocol version:
Unknown type of response to startup frame: gocql.errorFrame {code}
> Protocol version negotiation doesn't work if server replies with stream id
> different than 0
> -------------------------------------------------------------------------------------------
>
> Key: CASSGO-97
> URL: https://issues.apache.org/jira/browse/CASSGO-97
> Project: Apache Cassandra Go driver
> Issue Type: Bug
> Components: Core
> Reporter: João Reis
> Priority: Normal
> Fix For: 2.x
>
>
> If the server's ProtocolError response comes with stream id 0 then [this
> code|https://github.com/apache/cassandra-gocql-driver/blob/0326fae3617dd19b901f2e9a97479c04fc11e05a/conn.go#L685-L700]
> will create the protocol error object.
> If the response comes with a positive stream id then [this
> code|https://github.com/apache/cassandra-gocql-driver/blob/0326fae3617dd19b901f2e9a97479c04fc11e05a/conn.go#L1314-L1330]
> will create the protocol error object. This latter way of creating the error
> makes [the regex check not
> work|https://github.com/apache/cassandra-gocql-driver/blob/0326fae3617dd19b901f2e9a97479c04fc11e05a/control.go#L210-L245].
> This was found when trying to connect to
> [ZDM-Proxy|https://github.com/datastax/zdm-proxy/] but connecting to a C*
> 3.11.x cluster works fine.
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