kamailio/kamailio
Nov 2024 – Apr 2026
8 Months active
Languages Used
CMakefileXML
Technical Skills
API DevelopmentAPI developmentAPI integrationBug fixingC ProgrammingC programming
Federico Cabiddu
PROFILE
Federico Cabiddu
Worked extensively on the kamailio/kamailio repository, delivering features and fixes that improved memory management, resource cleanup, and protocol handling in C. Focused on core modules and the IMS stack, this developer implemented fixup_free wrappers and standardized exported structures to enhance stability and maintainability. Addressed memory leaks in the HTTP async client and asynchronous database operations, ensuring reliable resource release under high concurrency. Enhanced SIP transaction handling and expanded HTTP client capabilities with version control and PATCH support. Demonstrated expertise in C programming, network programming, and system integration, consistently improving code readability, packaging reliability, and documentation for scalable, production-grade deployments.
Overall Statistics
Feature vs Bugs
71%Features
Repository Contributions
57Total
Bugs
5
Commits
57
Features
12
Lines of code
2,338
Activity Months8
Your Network
103 peopleWork History
April 2026
5 Commits • 2 Features
Apr 1, 2026April 2026 (2026-04) monthly summary for kamailio/kamailio: Delivered three core improvements to the http_async_client that enhance performance, compatibility, and stability. 1) Introduced HTTP Version Control Parameter for Async HTTP Requests: added $http_req(http_version) to control CURLOPT_HTTP_VERSION, enabling optimized behavior for HTTP/1.1 and HTTP/2 with accompanying docs. 2) PATCH HTTP Method Support in http_async_client: added PATCH support and user-facing documentation to enable partial resource updates. 3) Memory Management Fixes in http_async_client: resolved memory leaks and ensured proper deallocation, reducing use-after-free risk and improving stability. These changes are supported by commits: 8fddbe58db0b5b6c62551f17fac1dd5597d3ebac; eb32d0edfc04213ca73563d76ab622678a6879c9; eb348f3c595bfec0061efa284f6436c2f4e0d375; 7dfaf9ad4adc04267a9a1a321722a2a08970a188; 779cf46e2565e96103223bf9040a30fe612a3748. Documentation updates accompany all changes.
5 Commits • 2 Features
Apr 1, 2026April 2026 (2026-04) monthly summary for kamailio/kamailio: Delivered three core improvements to the http_async_client that enhance performance, compatibility, and stability. 1) Introduced HTTP Version Control Parameter for Async HTTP Requests: added $http_req(http_version) to control CURLOPT_HTTP_VERSION, enabling optimized behavior for HTTP/1.1 and HTTP/2 with accompanying docs. 2) PATCH HTTP Method Support in http_async_client: added PATCH support and user-facing documentation to enable partial resource updates. 3) Memory Management Fixes in http_async_client: resolved memory leaks and ensured proper deallocation, reducing use-after-free risk and improving stability. These changes are supported by commits: 8fddbe58db0b5b6c62551f17fac1dd5597d3ebac; eb32d0edfc04213ca73563d76ab622678a6879c9; eb348f3c595bfec0061efa284f6436c2f4e0d375; 7dfaf9ad4adc04267a9a1a321722a2a08970a188; 779cf46e2565e96103223bf9040a30fe612a3748. Documentation updates accompany all changes.
April 2026
February 2026
1 Commits
Feb 1, 2026February 2026 monthly summary: Delivery focused on packaging reliability and cross-Debian build parity for Kamailio. Restored the db_text module in the Kamailio Debian packaging to ensure inclusion in builds across multiple Debian versions, mitigating build failures and deployment risks across customer environments.
February 2026
1 Commits
Feb 1, 2026February 2026 monthly summary: Delivery focused on packaging reliability and cross-Debian build parity for Kamailio. Restored the db_text module in the Kamailio Debian packaging to ensure inclusion in builds across multiple Debian versions, mitigating build failures and deployment risks across customer environments.
January 2026
1 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) focused on strengthening UAC transaction handling in kamailio/kamailio. Delivered a targeted feature that propagates the UAC flag to the UAS request within UAC transactions by updating the replace_callback, improving flag accuracy and state management across SIP transactions. The change enhances reliability of call setup and message handling with minimal surface area and a single focused commit. Major bug fixes: No standalone bug fixes were tracked for this month; the primary value came from the feature enhancement and its impact on signaling correctness.
1 Commits • 1 Features
Jan 1, 2026January 2026 (2026-01) focused on strengthening UAC transaction handling in kamailio/kamailio. Delivered a targeted feature that propagates the UAC flag to the UAS request within UAC transactions by updating the replace_callback, improving flag accuracy and state management across SIP transactions. The change enhances reliability of call setup and message handling with minimal surface area and a single focused commit. Major bug fixes: No standalone bug fixes were tracked for this month; the primary value came from the feature enhancement and its impact on signaling correctness.
January 2026
December 2025
9 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for kamailio/kamailio. Focused on delivering asynchronous database access improvements and robust resource management to enable scalable deployments and improved reliability in async workloads.
December 2025
9 Commits • 2 Features
Dec 1, 2025December 2025 monthly summary for kamailio/kamailio. Focused on delivering asynchronous database access improvements and robust resource management to enable scalable deployments and improved reliability in async workloads.
June 2025
1 Commits
Jun 1, 2025June 2025 monthly summary for kamailio/kamailio focusing on reliability and resource management in the HTTP Async Client. The month centered on addressing a memory leak in the HTTP path by ensuring proper release of resources when reusing curl handlers for HTTP challenges, improving stability under repeated HTTP requests and contributing to overall robustness of the HTTP client workflow.
1 Commits
Jun 1, 2025June 2025 monthly summary for kamailio/kamailio focusing on reliability and resource management in the HTTP Async Client. The month centered on addressing a memory leak in the HTTP path by ensuring proper release of resources when reusing curl handlers for HTTP challenges, improving stability under repeated HTTP requests and contributing to overall robustness of the HTTP client workflow.
June 2025
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for kamailio/kamailio: Focused on stabilizing RPC messaging by fixing a data serialization bug in the dlgs_rpc_briefing function, preventing potential data corruption and parsing issues in RPC briefing. The fix reinforces reliability for inter-module communication and supports scalable deployments. The month included targeted debugging, code review, and validation of serialization correctness.
April 2025
1 Commits
Apr 1, 2025April 2025 monthly summary for kamailio/kamailio: Focused on stabilizing RPC messaging by fixing a data serialization bug in the dlgs_rpc_briefing function, preventing potential data corruption and parsing issues in RPC briefing. The fix reinforces reliability for inter-module communication and supports scalable deployments. The month included targeted debugging, code review, and validation of serialization correctness.
December 2024
4 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for kamailio/kamailio focusing on memory safety, cleanup patterns, and code readability. Key work includes: 1) systemd logging: implemented fixup_free_* cleanup handlers to ensure proper memory/resource cleanup in sd_journal_print and sd_journal_send_xavp; 2) LWSC resource management: added fixup_free_spve_all to exported functions in lwsc_mod.c to ensure SPVE data is properly cleaned up; 3) formatting improvements: reformatted exported structures in Lost and Mangler modules for readability; no functional changes. These changes reduce memory leaks and stability risk, improve maintainability, and set a cleaner foundation for future feature work. Technologies demonstrated include C, memory management and cleanup patterns, systemd journald integration, and codebase readability improvements.
4 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for kamailio/kamailio focusing on memory safety, cleanup patterns, and code readability. Key work includes: 1) systemd logging: implemented fixup_free_* cleanup handlers to ensure proper memory/resource cleanup in sd_journal_print and sd_journal_send_xavp; 2) LWSC resource management: added fixup_free_spve_all to exported functions in lwsc_mod.c to ensure SPVE data is properly cleaned up; 3) formatting improvements: reformatted exported structures in Lost and Mangler modules for readability; no functional changes. These changes reduce memory leaks and stability risk, improve maintainability, and set a cleaner foundation for future feature work. Technologies demonstrated include C, memory management and cleanup patterns, systemd journald integration, and codebase readability improvements.
December 2024
November 2024
35 Commits • 4 Features
Nov 1, 20242024-11 Monthly Highlights for kamailio/kamailio: memory-management and API-stability improvements across core and IMS modules. Implemented broad fixup_free support and fixup_free* wrappers for exported functions, standardized exported structures, and cleaned JSON export formats. Extended coverage to core modules (cnxcc, corex, crypto, dispatcher, dlgs, enum, evapi, exec, geoip, geoip2, group, h350, htable, http_async_client) and across the IMS stack (ims_auth, ims_charging, tsilo, ims_dialog, ims_diameter_server, ims_icscf, ims_ipsec_pcscf, ims_ocs, ims_qos, ims_registrar_scscf, influxdb), plus JSON/LDAP/JWT/JSON-RPC/log customization components.
November 2024
35 Commits • 4 Features
Nov 1, 20242024-11 Monthly Highlights for kamailio/kamailio: memory-management and API-stability improvements across core and IMS modules. Implemented broad fixup_free support and fixup_free* wrappers for exported functions, standardized exported structures, and cleaned JSON export formats. Extended coverage to core modules (cnxcc, corex, crypto, dispatcher, dlgs, enum, evapi, exec, geoip, geoip2, group, h350, htable, http_async_client) and across the IMS stack (ims_auth, ims_charging, tsilo, ims_dialog, ims_diameter_server, ims_icscf, ims_ipsec_pcscf, ims_ocs, ims_qos, ims_registrar_scscf, influxdb), plus JSON/LDAP/JWT/JSON-RPC/log customization components.
Activity
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Quality Metrics
Correctness94.8%
Maintainability94.0%
Architecture93.6%
Performance92.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
CMakefileXML
Technical Skills
API DevelopmentAPI developmentAPI integrationBug fixingC ProgrammingC programmingCode FormattingCode formattingConfigurationCryptographyDebian packagingHTTP ClientHash TablesLDAPMemory Management
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