Line data    Source code

       1             : #include "source/common/http/http2/nghttp2.h"
       2             : 
       3             : #include "source/common/common/logger.h"
       4             : 
       5             : // nghttp2 fails to convey the POSIX ssize_t declaration
       6             : // that Microsoft declines to implement. Pick up a valid
       7             : // ssize_t declaration for win32 in our platform.h
       8             : #include "envoy/common/platform.h"
       9             : 
      10             : #include "nghttp2/nghttp2.h"
      11             : 
      12             : namespace Envoy {
      13             : namespace Http {
      14             : namespace Http2 {
      15             : 
      16          69 : void initializeNghttp2Logging() {
      17             :   // When ENVOY_NGHTTP2_TRACE is set, we install a debug logger, to prevent nghttp2
      18             :   // logging directly to stdout at -l trace.
      19          69 :   nghttp2_set_debug_vprintf_callback([](const char* format, va_list args) {
      20           0 :     if (std::getenv("ENVOY_NGHTTP2_TRACE") != nullptr) {
      21           0 :       char buf[2048];
      22           0 :       const int n = ::vsnprintf(buf, sizeof(buf), format, args);
      23             :       // nghttp2 inserts new lines, but we also insert a new line in the ENVOY_LOG
      24             :       // below, so avoid double \n.
      25           0 :       if (n >= 1 && static_cast<size_t>(n) < sizeof(buf) && buf[n - 1] == '\n') {
      26           0 :         buf[n - 1] = '\0';
      27           0 :       }
      28           0 :       ENVOY_LOG_TO_LOGGER(Logger::Registry::getLog(Logger::Id::http2), trace, "nghttp2: {}", buf);
      29           0 :     }
      30           0 :   });
      31          69 : }
      32             : 
      33             : } // namespace Http2
      34             : } // namespace Http
      35             : } // namespace Envoy