Hide cosmo struct definition from the public API.

clients/c/cosmopolite-int.h

@@ -0,0 +1,39 @@
+#ifndef _COSMOPOLITE_INT_H
+#define _COSMOPOLITE_INT_H
+
+// Declarations that aren't in the public API but are available to the test suite.
+
+struct cosmo {
+  char client_id[COSMO_UUID_SIZE];
+  char instance_id[COSMO_UUID_SIZE];
+  cosmo_callbacks callbacks;
+  void *passthrough;
+
+  pthread_mutex_t lock;
+  pthread_cond_t cond;
+  bool shutdown;
+  char *profile;
+  json_t *command_queue;
+  json_t *ack;
+  json_t *subscriptions;
+  uint64_t next_delay_ms;
+  unsigned int seedp;
+
+  enum {
+    INITIAL_CONNECT,
+    CONNECTED,
+    DISCONNECTED,
+  } connect_state;
+  struct timespec last_success;
+
+  enum {
+    LOGIN_UNKNOWN,
+    LOGGED_OUT,
+    LOGGED_IN,
+  } login_state;
+
+  pthread_t thread;
+  CURL *curl;
+};
+
+#endif