ubuntu coap-client命令

源码下载

1. 环境准备

apt-get install -y git gcc autoconf

2. 配置hosts文件

vim /etc/hosts
192.30.255.112  github.com git 
185.31.16.184 github.global.ssl.fastly.net

3. 代码下载

git clone https://github.com/authmillenon/libcoap.git

• git clone报错解决

：gnutls_handshake() failed: The TLS connection was non-properly terminated.
重置代理解决:

git config --global  --unset https.https://github.com.proxy 
git config --global  --unset http.https://github.com.proxy

准备openssl环境

1. 下载与解压

wget https://www.openssl.org/source/openssl-1.1.0f.tar.gz
tar -xzf openssl-1.1.0f.tar.gz

2. 编译与安装

cd openssl-1.1.0f
./config
make
make install

3. 创建链接至lib

ln -s /usr/local/ssl/bin/openssl  /usr/bin/openssl
ln -s /usr/local/ssl/include/openssl  /usr/include/openssl
echo “/usr/local/openssl/lib”>>/etc/ld.so.conf 
ldconfig -v 
openssl version –a 

ln -s /usr/local/lib64/libssl.so.1.1 /usr/lib
ln -s /usr/local/lib64/libcrypto.so.1.1 /usr/lib
ln -s /usr/local/bin/openssl /usr/bin/openssl_latest

cd /usr/bin/
mv openssl openssl_old
mv openssl_latest openssl

openssl version

编译libcoap

cd libcoap 
./autogen.sh
autoconf 
./configure --prefix=$(pwd)/Linux --disable-manpages  --disable-doxygen
make
make install

命令使用

cd /root/git-openssl/libcoap/examples
./coap-client -u authId@tenant-k  secretkey -m POST coaps://172.26.0.11:16684/event -t application/json -e '{"temp": 5}'