ngx_link_func_add_prop
The ngx_link_func_add_prop directive is used to add properties to dynamically linked applications in NGINX.
Description
The ngx_link_func_add_prop directive is part of the NGINX module for dynamic linking, which allows users to link C/C++ applications to the NGINX server context. This directive specifically enables the addition of properties that can be accessed by the dynamically linked functions during their execution. Its function is essential for configuring how external applications interact with NGINX, providing a method to define various settings or attributes that the application can use.
This directive takes two parameters: the property name and the property value. This enables NGINX to dynamically pass configuration settings or runtime options directly to the external application. By using properties, developers can control the behavior of their applications more granularly and can tailor how responses are generated or modified based on specific runtime conditions.
To ensure optimal performance and interoperability, the properties added using the ngx_link_func_add_prop directive are generally expected to be compatible with the expectations of the linked application functions. Care must be taken to adhere to expected naming conventions and data types when specifying properties to avoid runtime errors or misconfigurations.
Config Example
server {
listen 8888;
ngx_link_func_lib "/path/to/your/libcfuntest.so";
ngx_link_func_add_prop "max_connections" "100";
location = /example {
ngx_link_func_call "my_example_function";
}
}Ensure that the linked application is programmed to recognize the properties set through this directive.
Using incompatible data types for property values can lead to unexpected behavior or errors.
The directive must be used within the appropriate contexts, such as http or server blocks. Unintended placement can lead to configuration errors.