It appears as though the cinterop tool has generated incorrect mappings for the rabbitmq-c library (...

# kotlin-native

[napperley]

It appears as though the cinterop tool has generated incorrect mappings for the rabbitmq-c library ( https://github.com/alanxz/rabbitmq-c ). Trying to set the content_type field on a instance of amqp_basic_properties_t, based on the amqp_sendstring sample ( https://github.com/alanxz/rabbitmq-c/blob/master/examples/amqp_sendstring.c#L89 ). However the content_type field is read only instead of being writable.

[napperley]

My sample amqp-client project can be found here: https://gitlab.com/napperley/amqp-client

[kenkyee]

File a ticket on youtrack.jetbrains.com?

[svyatoslav.scherbina]

IIUC, content_type field type is a struct. In this case it is supposed to be val. Typically this simplifies accessing the contents of the field. If you need to rewrite the entire aggregate field value, something like this should help:

amqp_cstring_bytes("text/plain").place(props.content_type.ptr)

[napperley]

Tried the copy value method:

amqp_cstring_bytes("text/plain".cstr.ptr).place(props.content_type.ptr)

However the method doesn't work. The content_type field remains empty.

[napperley]

A no string conversion has to be applied to amqp_cstring_bytes in order to set the message body.

[napperley]

Discovered that the memory scope needs to be widened. The contentType C string ptr needs to be allocated in the publishMessage function, and passed through as a parameter to the setupAmqpProperties function, instead of allocating the C string ptr in the setupAmqpProperties function.