``` /* The 'transports' list contains all the transports this proxy has launched. Before a managed_proxy_t reaches the PT_PROTO_COMPLETED phase, this smartlist contains a 'transport_t' for every transport it has launched. When the managed_proxy_t reaches the PT_PROTO_COMPLETED phase, it registers all its transports to the circuitbuild.c subsystem. At that point the 'transport_t's are owned by the circuitbuild.c subsystem. To avoid carrying dangling 'transport_t's in this smartlist, right before the managed_proxy_t reaches the PT_PROTO_COMPLETED phase we replace all 'transport_t's with strings of their transport names. So, tl;dr: When (conf_state != PT_PROTO_COMPLETED) this list carries (transport_t *). When (conf_state == PT_PROTO_COMPLETED) this list carries (char *). */ ```