However, it is quite possible that this breaks SuperAgent (since they probably have a good reason for encoding the URI components in the first place). SQL>SELECT UTL_RAW.CAST_TO_VARCHAR2('41424344') FROM dual Ĭonclusion: So if we want to get encoded value as text instead of Hex we can use UTL_RAW.CAST_TO_VARCHAR2 which simply converts Hex to varchar2.Const superagent = require ( 'superagent' ) // callback superagent. Since it appears SuperAgent is applying 'encodeURIComponent' to transform the key to make it safe for http transport, you could 'decodeURIComponent' it first before passing it on. There are 9671 other projects in the npm registry using superagent. Start using superagent in your project by running npm i superagent. Latest version: 8.0.9, last published: 3 months ago. You can use this method to encode data which may otherwise cause communication problems, transmit it, then use the atob () method to decode the data. elegant & feature rich browser / node HTTP with a fluent API. Now in order to get my text back to original text 'ABCD', lets decode it. The btoa () method creates a Base64 -encoded ASCII string from a binary string (i.e., a string in which each character in the string is treated as a byte of binary data). SQL>SELECT UTL_RAW.CAST_TO_RAW('QUJDRA=') FROM dual If we convert the ASCII value of these text into hex we get the encoded string returned by Base64 encoding. One common application of Base64 encoding on the web is to encode binary data so it can be included in a data: URL. In order to get encoded string as text instead of RAW we can cast it to VARCHAR2. Base64 is commonly used in a number of applications including email via MIME, and storing complex data in XML. Perhaps this option does not suit your needs, and you want to encode text or decode Base64 using other variations of this algorithm. (Adds '=' sign to output text as we added 0s to make it 6bits)ĥ) Decimal representation of 6 bits representation of text.Ġ10000->16 010100->20 001001->9 000011->3 010001->17 000000->0Ħ) Now lets select from base64 characters(A-Z,a-z,0-9,+,/ altogether 64 characters:0-63) according to the decimal values.īut Oracle Base64 encoding returns this text as RAW(Hex Values). Base64 Encode text to Base64 Decode Base64 to text About Base64 online converter Please note that this Base64 converter supports only main standard and decodes the data in strict mode. Let me explain how we have got this values according the encoding steps that i have mentioned above.ģ) Binary representation of text grouped by bytes.Ĥ1->01000001 42->01000010 43->01000011 44->01000100Ĥ) Bit representation of text grouped by 6 bits. SQL> SELECT UTL_ENCODE.BASE64_ENCODE('41424344') FROM dual In Oracle we have got UTL_ENCODE package to encode it, which takes RAW and returns encoded value as RAW. Small progressive client-side HTTP request library, and Node.js module with the same API, supporting many high-level HTTP client features. We have got the hex values of 'ABCD' that is '41424344'.Ģ) Lets encode this hex using Base64. SQL> SELECT UTL_RAW.CAST_TO_RAW('ABCD') FROM dual Lets say we want to encode the text 'ABCD'.ġ) Lets convert this to RAW data which is hexadecimal values. Now i want to show this practically and also want to shows how the Oracle's Base64 encoding returns RAW value. for the To pass the data sent with the POST request, we use SuperAgents send() method. So bit should be represented as 6 bits string.ĥ) Then these 6 bits string will be converted to decimal number.Ħ) Then it selects the ascii characters(A-Z,a-z,0-1,+ and /) according to the decimal number calculated in step 4. Since youre expecting Base64 encoded image data on your server. generate URL or filesystem safe Base64 strings. Optional altchars must be a bytes-like object of length 2 which specifies an alternative alphabet for the + and / characters. That is, it takes 24 bits of data and returns as 32 bit encoded characters. base64.b64encode(s, altcharsNone) Encode the bytes-like object s using Base64 and return the encoded bytes. First of all I would like to tell how the Base64 works as general.Ģ) Converts it to Hexadecimal values(Decimal to Hex conversion).ģ) Represents the text in bits(groups as byte).Ĥ) Since the Base64 takes three bytes of data. It order to understand your problem and to simulate it I have generated one scenario.
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