Struggling with Custom Apache Module for Third-Party API Integration
I'm stuck on something that should probably be simple. I'm trying to implement I'm converting an old project and I've been struggling with this for a few days now and could really use some help. I tried several approaches but none seem to work. Currently developing an Apache module to facilitate integration with a third-party API, but I'm hitting a wall with the request handling. The goal is to process incoming requests, transform them, and forward them to the external service seamlessly. In my codebase, I'm leveraging the Apache 2.4.x API to create a module that adds a custom handler. Here’s a snippet of the core logic: ```c #include "httpd.h" #include "http_config.h" #include "http_protocol.h" #include "ap_config.h" static int my_custom_handler(request_rec *r) { if (strcmp(r->handler, "my_custom_handler") != 0) { return DECLINED; } // Transform request and forward to third-party API return OK; } static void register_hooks(apr_pool_t *p) { ap_hook_handler(my_custom_handler, NULL, NULL, APR_HOOK_MIDDLE); } module AP_MODULE_DECLARE_DATA my_custom_module = { STANDARD20_MODULE_STUFF, NULL, NULL, NULL, NULL, NULL, register_hooks }; ``` Despite implementing this, the requests aren't reaching the external API. I’ve verified the handler registration and confirmed that the module loads without errors during the Apache startup. The external service is definitely reachable, as I've tested it with `curl` from the command line. End-to-end testing revealed that my requests return a 500 Internal Server Error, but the logs don’t provide much detail beyond that. After profiling the application, I suspect that the request might be malformed before it's sent out. I've tried adding debugging output to log the request details: ```c ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Request to be sent: %s", r->uri); ``` The logs indicate that the request data appears correct up until the handling point. Additionally, I've explored handling the response from the external API but haven't engaged that part yet since the initial requests don't seem to succeed. Following best practices, I've also ensured that the Apache server has the necessary permissions and configurations, but I’m at a loss for what could be causing the failed requests. Is there something specific to the way Apache handles outgoing requests that I might be overlooking? Any insights or guidance on debugging this would be greatly appreciated. How would you solve this? I'm working on a application that needs to handle this. My development environment is Linux. Cheers for any assistance! The project is a application built with C. Cheers for any assistance! The project is a REST API built with C. Is this even possible? This is for a microservice running on macOS.