ip和动态域名都成功.txt

PIC18F6520+SIM300做的透明传输的DTU

at+cdnsorip?
0

OK
at+cipstart="tcp","221.217.89.244","2020"
OK

CONNECT OK
at+cipclose
CLOSE OK
at+cdnscfg="211.136.17.107"
OK
at+cdnsorip=1
OK
at+cipstart="tcp","newtimes.sharella.com","2020"
OK

CONNECT OK
at+cipsend=2
>       q
SEND OK

//注：这是在一台机器上实现的，
//分开成两台机器是否就不成功还要试试。
有意思的是，用at+cipclose断开连接（域名实现的），
再用at+cipstart="tcp","newtimes.sharella.com","2020"
建立连接，connect ok 后，在server端，client的IP地址和端口号都不改变！