【发布时间】：2018-05-12 23:34:11
【问题描述】：
我找到了 DTLS SCTP 示例代码的网络档案。 http://web.archive.org/web/20150617012520/http://sctp.fh-muenster.de/dtls-samples.html
我想运行 DTLS 回显服务器和客户端。但是，我无法编译。 以下是错误内容：
$gcc dtls-over-sctp-echo.c -o main -I /usr/local/ssl/include -L/usr/local/ssl/lib -lssl -lcrypto -lpthread -Wall
dtls-over-sctp-echo.c: In function ‘connection_handle’:
dtls-over-sctp-echo.c:219:32: error: storage size of ‘rinfo’ isn’t known
struct bio_dgram_sctp_rcvinfo rinfo;
^
dtls-over-sctp-echo.c:228:8: warning: implicit declaration of function ‘BIO_new_dgram_sctp’ [-Wimplicit-function-declaration]
bio = BIO_new_dgram_sctp(pinfo->fd, BIO_NOCLOSE);
^
dtls-over-sctp-echo.c:228:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
bio = BIO_new_dgram_sctp(pinfo->fd, BIO_NOCLOSE);
^
dtls-over-sctp-echo.c:232:3: warning: implicit declaration of function ‘BIO_dgram_sctp_notification_cb’ [-Wimplicit-function-declaration]
BIO_dgram_sctp_notification_cb(bio, &handle_notifications, (void*) ssl);
^
dtls-over-sctp-echo.c:291:21: error: ‘BIO_CTRL_DGRAM_SCTP_GET_RCVINFO’ undeclared (first use in this function)
BIO_ctrl(bio, BIO_CTRL_DGRAM_SCTP_GET_RCVINFO, sizeof(struct bio_dgram_sctp_rcvinfo), &rinf
^
dtls-over-sctp-echo.c:291:21: note: each undeclared identifier is reported only once for each function it appears in
dtls-over-sctp-echo.c:291:61: error: invalid application of ‘sizeof’ to incomplete type ‘struct bio_dgram_sctp_rcvinfo’
BIO_ctrl(bio, BIO_CTRL_DGRAM_SCTP_GET_RCVINFO, sizeof(struct bio_dgram_sctp_rcvinfo), &rinf
谢谢！
【问题讨论】：
-
听起来您缺少
#include <openssl/bio.h>。或者，您安装的 OpenSSL 包是否与示例代码预期的版本明显不同？ -
1.参考[1]stackoverflow.com/questions/20068706/… -- sysctl -w net.sctp.auth_enable=1