trojan-go [BUG] 使用自签名证书(域名为IP地址)时不能显示页面/trojan-go客户端不能连接网络

原版trojan使用自签名证书(域名为IP地址)是可以正常运行的，但是替换为trojan-go以后会存在如下问题。具体说明如下：

服务端使用原版trojan, 客户端使用原版trojan，但是基于自签名证书(域名为IP地址)。功能正常，通过浏览器访问时，页面内容显示正常，但是会提示“证书不受信任”
服务端替换为trojan-go, 客户端使用原版trojan，基于自签名证书 trojan客户端网络访问正常，如果用浏览器访问网站， 页面无法显示。
服务端替换为trojan-go, 客户端替换为trojan-go，基于自签名证书 trojan客户端 无法访问网络（提示证书错误），如果用浏览器访问网站，页面无法显示。

服务器和客户端环境信息

服务器Centos8, trojan, trojan-go, nginx(以root用户运行) 客户端： windows10.

附trojan配置文件：

自签名证书生成：

1) 通过openssl生成私钥
openssl genrsa -out server.key 2048

2) 根据私钥生成证书申请文件csr
openssl req -new -key server.key -out server.csr
这里根据命令行向导来进行信息输入：其中“Common Name(FQDN Name)”处输入域名(IP地址)
ps.Common Name可以输入：*.yourdomain.com，这种方式生成通配符域名证书
注： **这里是输入的真实的IP地址。例如 132.15.xx.xx**

3) 使用私钥对证书申请进行签名从而生成证书
openssl x509 -req -in server.csr -out server.crt -signkey server.key -days 3650
这样就生成了有效期为：10年的证书文件，对于自己内网服务使用足够。
文件"server.crt" 同时用于服务端和客户端。

trojan配置文件

客户端config.json：

"ssl": {
        "verify": true,
        "verify_hostname": true,
        "cert": "./server.crt",

服务端config.json：

"log_level": 1,
    "ssl": {
        "cert": "/usr/local/etc/trojan/server.crt",
        "key":  "/usr/local/etc/trojan/server.key",

服务端和客户端日志

客户端日志：

[INFO]  2020/12/26 22:27:21 trojan-go v0.8.2 initializing
[INFO]  2020/12/26 22:27:21 adapter listening on tcp/udp: 127.0.0.1:1080
[INFO]  2020/12/26 22:27:21 tls fingerprint firefox applied
[INFO]  2020/12/26 22:27:21 using custom cert
[INFO]  2020/12/26 22:27:21 geoip info {CN 1} loaded
[INFO]  2020/12/26 22:27:21 geoip info {PRIVATE 1} loaded
[INFO]  2020/12/26 22:27:22 geosite info {GEOLOCATION-!CN 0} loaded
[INFO]  2020/12/26 22:27:22 geosite info {CN 1} loaded
[INFO]  2020/12/26 22:27:22 geosite info {GEOLOCATION-CN 1} loaded
[INFO]  2020/12/26 22:27:22 geosite info {CATEGORY-ADS 2} loaded
[INFO]  2020/12/26 22:27:22 router client created
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1905 metadata www.youtube.com:443
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1906 metadata fonts.googleapis.com:443
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1907 metadata fonts.gstatic.com:443
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1909 metadata www.youtube.com:443
[ERROR] 2020/12/26 22:27:34 github.com/p4gefau1t/trojan-go/proxy.(*Proxy).relayConnLoop.func1.1:proxy.go:66 proxy failed to dial connection | simplesocks failed to dial using underlying tunnel | no available mux client found | mux failed to dial | tls failed to handshake with remote server | x509: certificate relies on legacy Common Name field, use SANs or temporarily enable Common Name matching with GODEBUG=x509ignoreCN=0
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1911 metadata www.youtube.com:443
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1912 metadata www.gstatic.com:443
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1913 metadata ssl.gstatic.com:443
[INFO]  2020/12/26 22:27:34 socks connection from 127.0.0.1:1914 metadata apis.google.com:443
[ERROR] 2020/12/26 22:27:35 github.com/p4gefau1t/trojan-go/proxy.(*Proxy).relayConnLoop.func1.1:proxy.go:66 proxy failed to dial connection | simplesocks failed to dial using underlying tunnel | no available mux client found | mux failed to dial | tls failed to handshake with remote server | x509: certificate relies on legacy Common Name field, use SANs or temporarily enable Common Name matching with GODEBUG=x509ignoreCN=0

服务端日志：

Dec 06 22:27:38 racknerd trojan-go[878]: [INFO]  2020/12/20 22:27:38 tcp connection from 2xx.x.xx.xxx:36189
Dec 06 22:27:39 racknerd trojan-go[878]: [ERROR] 2020/12/20 22:27:39 github.com/p4gefau1t/trojan-go/tunnel/tls.(*Server
).acceptLoop.func1:server.go:135 tls handshake failed | remote error: tls: bad certificate
Dec 06 22:27:39 racknerd trojan-go[878]: [INFO]  2020/12/20 22:27:39 tcp connection from 2xx.x.xx.xxx:18812
Dec 06 22:27:39 racknerd trojan-go[878]: [ERROR] 2020/12/20 22:27:39 github.com/p4gefau1t/trojan-go/tunnel/tls.(*Server
).acceptLoop.func1:server.go:135 tls handshake failed | remote error: tls: bad certificate
Dec 06 22:27:39 racknerd trojan-go[878]: [INFO]  2020/12/20 22:27:39 tcp connection from 2xx.x.xx.xxx:36191
Dec 06 22:27:40 racknerd trojan-go[878]: [ERROR] 2020/12/20 22:27:40 github.com/p4gefau1t/trojan-go/tunnel/tls.(*Server
).acceptLoop.func1:server.go:135 tls handshake failed | remote error: tls: bad certificate
Dec 06 22:27:40 racknerd trojan-go[878]: [INFO]  2020/12/20 22:27:40 tcp connection from 2xx.x.xx.xxx:18814
Dec 06 22:27:40 racknerd trojan-go[878]: [ERROR] 2020/12/20 22:27:40 github.com/p4gefau1t/trojan-go/tunnel/tls.(*Server
).acceptLoop.func1:server.go:135 tls handshake failed | remote error: tls: bad certificate
Dec 06 22:27:40 racknerd trojan-go[878]: [INFO]  2020/12/20 22:27:40 tcp connection from 2xx.x.xx.xxx:36192
Dec 06 22:27:40 racknerd trojan-go[878]: [ERROR] 2020/12/20 22:27:40 github.com/p4gefau1t/trojan-go/tunnel/tls.(*Server
).acceptLoop.func1:server.go:135 tls handshake failed | remote error: tls: bad certificate
Dec 06 22:28:17 racknerd trojan-go[878]: [INFO]  2020/12/20 22:28:17 tcp connection from 2xx.x.xx.xxx:18844
Dec 06 22:28:17 racknerd trojan-go[878]: [ERROR] 2020/12/20 22:28:17 github.com/p4gefau1t/trojan-go/tunnel/tls.(*Server
).acceptLoop.func1:server.go:135 tls handshake failed | remote error: tls: bad certificate
Dec 06 22:28:17 racknerd trojan-go[878]: [INFO]  2020/12/20 22:28:17 tcp connection from 2xx.x.xx.xxx:36220
Dec 06 22:28:17 racknerd trojan-go[878]: [ERROR] 2020/12/20 22:28:17 github.com/p4gefau1t/trojan-go/tunnel/tls.(*Server
).acceptLoop.func1:server.go:135 tls handshake failed | remote error: tls: bad certificate

Nov 06 '20 06:11 siwind

我并没有完整按照你的做法完整从 trojan-gfw 到 trojan-go 实验操作，但是从结论来说，自签证书可以在 trojan-go 使用（客户端也为 trojan-go）。但无法按照你生成证书的方法使用。同时我这里的报错提示也和你的不一样。

同时由于我没有在你提供的配置文件中发现有配置 SNI 字段。可能你把对应的功能塞进 Nginx 里而我并不知道。如果没有配置，也请加上。

请尝试按照以下方法生成证书。并将 example.com 替换为自己的域名。

cat > csrconfig.txt <<-EOF
[ req ]
default_md = sha256
prompt = no
req_extensions = req_ext
distinguished_name = req_distinguished_name
[ req_distinguished_name ]
commonName = example.com
countryName = US
[ req_ext ]
keyUsage=critical,digitalSignature,keyEncipherment
extendedKeyUsage=critical,serverAuth,clientAuth
subjectAltName = @alt_names
[ alt_names ]
DNS.0 = example.com
EOF

cat > certconfig.txt <<-EOF
[ req ]
default_md = sha256
prompt = no
req_extensions = req_ext
distinguished_name = req_distinguished_name
[ req_distinguished_name ]
commonName = example.com
[ req_ext ]
subjectKeyIdentifier = hash
authorityKeyIdentifier = keyid:always,issuer
keyUsage=critical,digitalSignature,keyEncipherment
extendedKeyUsage=critical,serverAuth,clientAuth
subjectAltName = @alt_names
[ alt_names ]
DNS.0 = example.com
EOF

openssl genpkey -outform PEM -algorithm RSA -pkeyopt rsa_keygen_bits:2048 -out cert.key
openssl req -new -nodes -key cert.key -config csrconfig.txt -out cert.csr
openssl req -x509 -nodes -in cert.csr -days 365 -key cert.key -config certconfig.txt -extensions req_ext -out cert.crt