Add distinct feature flag for SRV toggle.

Author: vector-of-bool

src/libmongoc/examples/parse_handshake_cfg.py

@@ -37,7 +37,8 @@
     "MONGOC_MD_FLAG_TRACE",
     "MONGOC_MD_FLAG_ENABLE_ICU",
     "MONGOC_MD_FLAG_ENABLE_CLIENT_SIDE_ENCRYPTION",
-    "MONGOC_MD_FLAG_ENABLE_MONGODB_AWS_AUTH"
+    "MONGOC_MD_FLAG_ENABLE_MONGODB_AWS_AUTH",
+    "MONGOC_MD_FLAG_ENABLE_SRV",
 ]
 
 def main():

src/libmongoc/src/mongoc/mongoc-config.h.in

@@ -372,16 +372,6 @@
  */
 #define MONGOC_TRACE @MONGOC_TRACE@
 
-enum {
-   /**
-    * @brief Compile-time constant determining whether the mongoc library was
-    * compiled with tracing enabled.
-    *
-    * Can be controlled with the 'ENABLE_TRACING" configure-time boolean option
-    */
-   MONGOC_TRACE_ENABLED = MONGOC_TRACE
-};
-
 /*
  * Set if we have ICU support.
  */
@@ -391,7 +381,6 @@ enum {
 #  undef MONGOC_ENABLE_ICU
 #endif
 
-
 /*
  * Set if we have Client Side Encryption support.
  */
@@ -422,6 +411,23 @@ enum {
 #  undef MONGOC_ENABLE_MONGODB_AWS_AUTH
 #endif
 
+enum {
+   /**
+    * @brief Compile-time constant determining whether the mongoc library was
+    * compiled with tracing enabled.
+    *
+    * Can be controlled with the “ENABLE_TRACING” configure-time boolean option
+    */
+   MONGOC_TRACE_ENABLED = MONGOC_TRACE,
+   /**
+    * @brief Compile-time constant indicating whether the mongoc library was
+    * compiled with SRV server discovery support.
+    *
+    * Can be controled with the “ENABLE_SRV” configure-time boolean option.
+    */
+   MONGOC_SRV_ENABLED = MONGOC_ENABLE_SRV,
+};
+
 /* clang-format on */
 
 #endif /* MONGOC_CONFIG_H */

src/libmongoc/src/mongoc/mongoc-handshake-private.h

@@ -81,6 +81,7 @@ typedef enum {
    MONGOC_MD_FLAG_ENABLE_ICU,
    MONGOC_MD_FLAG_ENABLE_CLIENT_SIDE_ENCRYPTION,
    MONGOC_MD_FLAG_ENABLE_MONGODB_AWS_AUTH,
+   MONGOC_MD_FLAG_ENABLE_SRV,
    /* Add additional config flags here, above LAST_MONGOC_MD_FLAG. */
    LAST_MONGOC_MD_FLAG
 } mongoc_handshake_config_flag_bit_t;

src/libmongoc/src/mongoc/mongoc-handshake.c

@@ -196,6 +196,10 @@ _mongoc_handshake_get_config_hex_string (void)
    _set_bit (bf, byte_count, MONGOC_MD_FLAG_ENABLE_MONGODB_AWS_AUTH);
 #endif
 
+   if (MONGOC_SRV_ENABLED) {
+      _set_bit (bf, byte_count, MONGOC_MD_FLAG_ENABLE_SRV);
+   }
+
    bson_string_t *const str = bson_string_new ("0x");
    for (uint32_t i = 0u; i < byte_count; i++) {
       bson_string_append_printf (str, "%02x", bf[i]);

src/libmongoc/tests/test-mongoc-handshake.c

@@ -871,6 +871,9 @@ test_handshake_platform_config (void)
    BSON_ASSERT (_get_bit (config_str, MONGOC_MD_FLAG_HAVE_SCHED_GETCPU));
 #endif
 
+   BSON_ASSERT (_get_bit (config_str, MONGOC_MD_FLAG_ENABLE_SRV) ==
+                MONGOC_SRV_ENABLED);
+
 #ifdef MONGOC_ENABLE_SHM_COUNTERS
    BSON_ASSERT (_get_bit (config_str, MONGOC_MD_FLAG_ENABLE_SHM_COUNTERS));
 #endif