删除安全上下文

call_server() 函数通过删除上下文并返回到 main() 函数来结束操作。

/* Delete context */
     maj_stat = gss_delete_sec_context(&min_stat, &context, &out_buf);
     if (maj_stat != GSS_S_COMPLETE) {
          display_status("deleting context", maj_stat, min_stat);
          (void) close(s);
          (void) gss_delete_sec_context(&min_stat, &context, GSS_C_NO_BUFFER);
          return -1;
     }

     (void) gss_release_buffer(&min_stat, &out_buf);
     (void) close(s);
     return 0;