Add libcurl & Go compression handling too

Author: pimterry

src/targets/c/libcurl.js

@@ -1,6 +1,7 @@
 'use strict'
 
 const CodeBuilder = require('../../helpers/code-builder')
+const helpers = require('../../helpers/headers')
 
 module.exports = function (source, options) {
   const code = new CodeBuilder()
@@ -26,16 +27,21 @@ module.exports = function (source, options) {
   }
 
   // construct cookies
-  if (source.allHeaders.cookie) {
+  if (helpers.hasHeader(source.allHeaders, 'cookie')) {
     code.blank()
-      .push('curl_easy_setopt(hnd, CURLOPT_COOKIE, "%s");', source.allHeaders.cookie)
+      .push('curl_easy_setopt(hnd, CURLOPT_COOKIE, "%s");', helpers.getHeader(source.allHeaders, 'cookie'))
   }
 
   if (source.postData.text) {
     code.blank()
       .push('curl_easy_setopt(hnd, CURLOPT_POSTFIELDS, %s);', JSON.stringify(source.postData.text))
   }
 
+  if (helpers.hasHeader(source.allHeaders, 'accept-encoding')) {
+    code.blank()
+      .push('curl_easy_setopt(hnd, CURLOPT_ACCEPT_ENCODING, "");')
+  }
+
   code.blank()
     .push('CURLcode ret = curl_easy_perform(hnd);')
 

src/targets/go/native.js

@@ -11,6 +11,7 @@
 'use strict'
 
 const CodeBuilder = require('../../helpers/code-builder')
+const helpers = require('../../helpers/headers')
 
 module.exports = function (source, options) {
   // Let's Go!
@@ -110,6 +111,11 @@ module.exports = function (source, options) {
   errorCheck()
 
   // Add headers
+
+  // Go automatically adds this and handles decompression, as long as we don't try to
+  // manually add it ourselves:
+  delete source.allHeaders[helpers.getHeaderName(source.allHeaders, 'accept-encoding')]
+
   if (Object.keys(source.allHeaders).length) {
     Object.keys(source.allHeaders).forEach(function (key) {
       code.push(indent, 'req.Header.Add("%s", "%qd")', key, source.allHeaders[key])

test/fixtures/output/c/libcurl/compression.c

@@ -7,4 +7,6 @@ struct curl_slist *headers = NULL;
 headers = curl_slist_append(headers, "accept-encoding: deflate, gzip, br");
 curl_easy_setopt(hnd, CURLOPT_HTTPHEADER, headers);
 
+curl_easy_setopt(hnd, CURLOPT_ACCEPT_ENCODING, "");
+
 CURLcode ret = curl_easy_perform(hnd);

test/fixtures/output/go/native/compression.go

@@ -12,8 +12,6 @@ func main() {
 
 	req, _ := http.NewRequest("GET", url, nil)
 
-	req.Header.Add("accept-encoding", "deflate, gzip, br")
-
 	res, _ := http.DefaultClient.Do(req)
 
 	defer res.Body.Close()