小程序开发中在nginx端口同时监听多个域名的方法详解

server {

listen 443 ssl;

server_name xxx.xxx.cn;

ssl_certificate ssl/server.pem;

ssl_certificate_key ssl/server.key;

......

}

今天我们来看看小程序开发过程中的常见问题：

1.如何在nginx同一端口同时监听多个域名？

在启用新的域名的时候，只需要另启一个server配置文件，丢在vhosts目录下即可，不会报端口被占，这个维护nginx的大部分人都知道。但是，这里有个地方要注意：不能跨nginx实例。很多同事习惯在同一虚机或者云主机下安装多个nginx实例，如果你在实例1里面用了某个端口，再在实例2里面用这个端口绑不同域名，那对不起了，报错妥妥的出来：

个人建议：不在同一台虚机或者云主机下安装多个nginx实例。

2.http和https如何同时监听？

这种需求还是挺多的，有时候我们的证书需要安装在A10或者F5这类硬负载均衡上，此时，DMZ区的服务器不需要安装证书，只需要监听http端口即可。但与此同时，内网dns直接将A地址指到了服务器，此时又需要在服务器上安装证书。这种场景，就需要服务器同时对http和https端口进行监听，监听https口是为了解析内网https域名，监听http口是为了反向代理从DMZ区过来的http请求。如此，可实现内外网https域名统一。

最常见的配置如下

server {

listen 8080;

listen 443 ssl;

server_name xxx.xxx.cn;;

ssl_certificate ssl/server.pem;

ssl_certificate_key ssl/server.key;

......

}

3.中文转码的MD5加密的常见方法

var rotateLeft = function(lValue, iShiftBits) {  return(lValue << iShiftBits) | (lValue >>> (32 - iShiftBits));  }  var addUnsigned = function(lX, lY) {  var lX4, lY4, lX8, lY8, lResult;  lX8 = (lX & 0x80000000);  lY8 = (lY & 0x80000000);  lX4 = (lX & 0x40000000);  lY4 = (lY & 0x40000000);  lResult = (lX & 0x3FFFFFFF) + (lY & 0x3FFFFFFF);  if(lX4 & lY4) return(lResult ^ 0x80000000 ^ lX8 ^ lY8);  if(lX4 | lY4) {  if(lResult & 0x40000000) return(lResult ^ 0xC0000000 ^ lX8 ^ lY8);  else return(lResult ^ 0x40000000 ^ lX8 ^ lY8);  } else {  return(lResult ^ lX8 ^ lY8);  }  }  var F = function(x, y, z) {  return(x & y) | ((~x) & z);  }  var G = function(x, y, z) {  return(x & z) | (y & (~z));  }  var H = function(x, y, z) {  return(x ^ y ^ z);  }  var I = function(x, y, z) {  return(y ^ (x | (~z)));  }  var FF = function(a, b, c, d, x, s, ac) {  a = addUnsigned(a, addUnsigned(addUnsigned(F(b, c, d), x), ac));  return addUnsigned(rotateLeft(a, s), b);  };  var GG = function(a, b, c, d, x, s, ac) {  a = addUnsigned(a, addUnsigned(addUnsigned(G(b, c, d), x), ac));  return addUnsigned(rotateLeft(a, s), b);  };  var HH = function(a, b, c, d, x, s, ac) {  a = addUnsigned(a, addUnsigned(addUnsigned(H(b, c, d), x), ac));  return addUnsigned(rotateLeft(a, s), b);  };  var II = function(a, b, c, d, x, s, ac) {  a = addUnsigned(a, addUnsigned(addUnsigned(I(b, c, d), x), ac));  return addUnsigned(rotateLeft(a, s), b);  };  var convertToWordArray = function(string) {  var lWordCount;  var lMessageLength = string.length;  var lNumberOfWordsTempOne = lMessageLength + 8;  var lNumberOfWordsTempTwo = (lNumberOfWordsTempOne - (lNumberOfWordsTempOne % 64)) / 64;  var lNumberOfWords = (lNumberOfWordsTempTwo + 1) * 16;  var lWordArray = Array(lNumberOfWords - 1);  var lBytePosition = 0;  var lByteCount = 0;  while(lByteCount < lMessageLength) {  lWordCount = (lByteCount - (lByteCount % 4)) / 4;  lBytePosition = (lByteCount % 4) * 8;  lWordArray[lWordCount] = (lWordArray[lWordCount] | (string.charCodeAt(lByteCount) << lBytePosition));  lByteCount++;  }  lWordCount = (lByteCount - (lByteCount % 4)) / 4;  lBytePosition = (lByteCount % 4) * 8;  lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80 << lBytePosition);  lWordArray[lNumberOfWords - 2] = lMessageLength << 3;  lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;  return lWordArray;  };  var wordToHex = function(lValue) {  var WordToHexValue = "",  WordToHexValueTemp = "",  lByte, lCount;  for(lCount = 0; lCount <= 3; lCount++) {  lByte = (lValue >>> (lCount * 8)) & 255;  WordToHexValueTemp = "0" + lByte.toString(16);  WordToHexValue = WordToHexValue + WordToHexValueTemp.substr(WordToHexValueTemp.length - 2, 2);  }  return WordToHexValue;  };  var uTF8Encode = function(string) {  string = string.replace(/\x0d\x0a/g, "\x0a");  var output = "";  for(var n = 0; n < string.length; n++) {  var c = string.charCodeAt(n);  if(c < 128) {  output += String.fromCharCode(c);  } else if((c > 127) && (c < 2048)) {  output += String.fromCharCode((c >> 6) | 192);  output += String.fromCharCode((c & 63) | 128);  } else {  output += String.fromCharCode((c >> 12) | 224);  output += String.fromCharCode(((c >> 6) & 63) | 128);  output += String.fromCharCode((c & 63) | 128);  }  }  return output;  };  function md5(string) {  var x = Array();  var k, AA, BB, CC, DD, a, b, c, d;  var S11 = 7,  S12 = 12,  S13 = 17,  S14 = 22;  var S21 = 5,  S22 = 9,  S23 = 14,  S24 = 20;  var S31 = 4,  S32 = 11,  S33 = 16,  S34 = 23;  var S41 = 6,  S42 = 10,  S43 = 15,  S44 = 21;  string = uTF8Encode(string);  x = convertToWordArray(string);  a = 0x67452301;  b = 0xEFCDAB89;  c = 0x98BADCFE;  d = 0x10325476;  for(k = 0; k < x.length; k += 16) {  AA = a;  BB = b;  CC = c;  DD = d;  a = FF(a, b, c, d, x[k + 0], S11, 0xD76AA478);  d = FF(d, a, b, c, x[k + 1], S12, 0xE8C7B756);  c = FF(c, d, a, b, x[k + 2], S13, 0x242070DB);  b = FF(b, c, d, a, x[k + 3], S14, 0xC1BDCEEE);  a = FF(a, b, c, d, x[k + 4], S11, 0xF57C0FAF);  d = FF(d, a, b, c, x[k + 5], S12, 0x4787C62A);  c = FF(c, d, a, b, x[k + 6], S13, 0xA8304613);  b = FF(b, c, d, a, x[k + 7], S14, 0xFD469501);  a = FF(a, b, c, d, x[k + 8], S11, 0x698098D8);  d = FF(d, a, b, c, x[k + 9], S12, 0x8B44F7AF);  c = FF(c, d, a, b, x[k + 10], S13, 0xFFFF5BB1);  b = FF(b, c, d, a, x[k + 11], S14, 0x895CD7BE);  a = FF(a, b, c, d, x[k + 12], S11, 0x6B901122);  d = FF(d, a, b, c, x[k + 13], S12, 0xFD987193);  c = FF(c, d, a, b, x[k + 14], S13, 0xA679438E);  b = FF(b, c, d, a, x[k + 15], S14, 0x49B40821);  a = GG(a, b, c, d, x[k + 1], S21, 0xF61E2562);  d = GG(d, a, b, c, x[k + 6], S22, 0xC040B340);  c = GG(c, d, a, b, x[k + 11], S23, 0x265E5A51);  b = GG(b, c, d, a, x[k + 0], S24, 0xE9B6C7AA);  a = GG(a, b, c, d, x[k + 5], S21, 0xD62F105D);  d = GG(d, a, b, c, x[k + 10], S22, 0x2441453);  c = GG(c, d, a, b, x[k + 15], S23, 0xD8A1E681);  b = GG(b, c, d, a, x[k + 4], S24, 0xE7D3FBC8);  a = GG(a, b, c, d, x[k + 9], S21, 0x21E1CDE6);  d = GG(d, a, b, c, x[k + 14], S22, 0xC33707D6);  c = GG(c, d, a, b, x[k + 3], S23, 0xF4D50D87);  b = GG(b, c, d, a, x[k + 8], S24, 0x455A14ED);  a = GG(a, b, c, d, x[k + 13], S21, 0xA9E3E905);  d = GG(d, a, b, c, x[k + 2], S22, 0xFCEFA3F8);  c = GG(c, d, a, b, x[k + 7], S23, 0x676F02D9);  b = GG(b, c, d, a, x[k + 12], S24, 0x8D2A4C8A);  a = HH(a, b, c, d, x[k + 5], S31, 0xFFFA3942);  d = HH(d, a, b, c, x[k + 8], S32, 0x8771F681);  c = HH(c, d, a, b, x[k + 11], S33, 0x6D9D6122);  b = HH(b, c, d, a, x[k + 14], S34, 0xFDE5380C);  a = HH(a, b, c, d, x[k + 1], S31, 0xA4BEEA44);  d = HH(d, a, b, c, x[k + 4], S32, 0x4BDECFA9);  c = HH(c, d, a, b, x[k + 7], S33, 0xF6BB4B60);  b = HH(b, c, d, a, x[k + 10], S34, 0xBEBFBC70);  a = HH(a, b, c, d, x[k + 13], S31, 0x289B7EC6);  d = HH(d, a, b, c, x[k + 0], S32, 0xEAA127FA);  c = HH(c, d, a, b, x[k + 3], S33, 0xD4EF3085);  b = HH(b, c, d, a, x[k + 6], S34, 0x4881D05);  a = HH(a, b, c, d, x[k + 9], S31, 0xD9D4D039);  d = HH(d, a, b, c, x[k + 12], S32, 0xE6DB99E5);  c = HH(c, d, a, b, x[k + 15], S33, 0x1FA27CF8);  b = HH(b, c, d, a, x[k + 2], S34, 0xC4AC5665);  a = II(a, b, c, d, x[k + 0], S41, 0xF4292244);  d = II(d, a, b, c, x[k + 7], S42, 0x432AFF97);  c = II(c, d, a, b, x[k + 14], S43, 0xAB9423A7);  b = II(b, c, d, a, x[k + 5], S44, 0xFC93A039);  a = II(a, b, c, d, x[k + 12], S41, 0x655B59C3);  d = II(d, a, b, c, x[k + 3], S42, 0x8F0CCC92);  c = II(c, d, a, b, x[k + 10], S43, 0xFFEFF47D);  b = II(b, c, d, a, x[k + 1], S44, 0x85845DD1);  a = II(a, b, c, d, x[k + 8], S41, 0x6FA87E4F);  d = II(d, a, b, c, x[k + 15], S42, 0xFE2CE6E0);  c = II(c, d, a, b, x[k + 6], S43, 0xA3014314);  b = II(b, c, d, a, x[k + 13], S44, 0x4E0811A1);  a = II(a, b, c, d, x[k + 4], S41, 0xF7537E82);  d = II(d, a, b, c, x[k + 11], S42, 0xBD3AF235);  c = II(c, d, a, b, x[k + 2], S43, 0x2AD7D2BB);  b = II(b, c, d, a, x[k + 9], S44, 0xEB86D391);  a = addUnsigned(a, AA);  b = addUnsigned(b, BB);  c = addUnsigned(c, CC);  d = addUnsigned(d, DD);  }  var tempValue = wordToHex(a) + wordToHex(b) + wordToHex(c) + wordToHex(d);  return tempValue.toLowerCase();  }  module.exports.md5 = md5

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