SOCK_STREAM        74 core/ngx_connection.c     ls->type = SOCK_STREAM;
SOCK_STREAM        29 event/ngx_event_connect.c     s = ngx_socket(pc->sockaddr->sa_family, SOCK_STREAM, 0);
SOCK_STREAM       115 os/unix/ngx_process.c         if (socketpair(AF_UNIX, SOCK_STREAM, 0, ngx_processes[s].channel) == -1)