v1.1.1: Fix "old mode" stream error in Node v0.10, and replace .resume() calls with a pipe to the dev-null module (for 0.10 compatibility)

lib/bhttp.coffee

@@ -21,6 +21,7 @@ debug = require("debug")
 debugRequest = debug("bhttp:request")
 debugResponse = debug("bhttp:response")
 extend = require "extend"
+devNull = require "dev-null"
 
 # Other third-party modules
 formData = require "form-data2"
@@ -452,7 +453,7 @@ processResponse = (request, response, requestState) ->
 					else
 						return redirectUnchanged request, response, requestState
 		else if request.responseOptions.discardResponse
-			response.resume() # Drain the response stream
+			response.pipe(devNull()) # Drain the response stream
 			Promise.resolve response
 		else
 			totalBytes = response.headers["content-length"]
@@ -469,10 +470,29 @@ processResponse = (request, response, requestState) ->
 					request.responseOptions.onDownloadProgress(completedBytes, totalBytes, response)
 
 			new Promise (resolve, reject) ->
-				# This is slightly hacky, but returning a .pipe'd stream would make all the response object attributes unavailable to the end user. Therefore, 'branching' the stream into our progress monitoring stream is a much better option. We use .pause() to ensure the stream doesn't start flowing until the end user (or our library) has actually piped it into something.
+				# This is a very, very dirty hack - however, using .pipe followed by .pause breaks in Node.js v0.10.35 with "Cannot switch to old mode now". Our solution is to monkeypatch the `on` and `resume` methods to attach the progress event handler as soon as something else is attached to the response stream (or when it is drained). This way, a user can also pipe the response in a later tick, without the stream draining prematurely.
-				response.pipe(progressStream)
+				_resume = response.resume.bind(response)
-				response.pause()
+				_on = response.on.bind(response)
-
+				_progressStreamAttached = false
+
+				attachProgressStream = ->
+					# To keep this from sending us into an infinite loop.
+					if not _progressStreamAttached
+						debugResponse "attaching progress stream"
+						_progressStreamAttached = true
+						response.pipe(progressStream)
+
+				response.on = (eventName, handler) ->
+					debugResponse "'on' called, #{eventName}"
+					if eventName == "data" or eventName == "readable"
+						attachProgressStream()
+					_on(eventName, handler)
+
+				response.resume = ->
+					attachProgressStream()
+					_resume()
+
+				# Continue with the regular response processing.
 				if request.responseOptions.stream
 					resolve response
 				else
@@ -527,7 +547,7 @@ redirectUnchanged = (request, response, requestState) ->
 doRedirect = (request, response, requestState, newOptions) ->
 	Promise.try ->
 		if not request.responseOptions.keepRedirectResponses
-			response.resume() # Let the response stream drain out...
+			response.pipe(devNull()) # Let the response stream drain out...
 
 		requestState.redirectHistory.push response
 		bhttpAPI._doRequest response.headers["location"], newOptions, requestState

lib/bhttp.js

@@ -1,4 +1,4 @@
-var Promise, S, addErrorData, bhttpAPI, bhttpErrors, concatStream, createCookieJar, debug, debugRequest, debugResponse, doPayloadRequest, doRedirect, errors, extend, formData, formFixArray, http, https, isStream, makeRequest, ofTypes, packageConfig, prepareCleanup, prepareDefaults, prepareOptions, preparePayload, prepareProtocol, prepareRequest, prepareSession, prepareUrl, processResponse, querystring, redirectGet, redirectUnchanged, sink, spy, stream, streamLength, toughCookie, urlUtil, util, _;
+var Promise, S, addErrorData, bhttpAPI, bhttpErrors, concatStream, createCookieJar, debug, debugRequest, debugResponse, devNull, doPayloadRequest, doRedirect, errors, extend, formData, formFixArray, http, https, isStream, makeRequest, ofTypes, packageConfig, prepareCleanup, prepareDefaults, prepareOptions, preparePayload, prepareProtocol, prepareRequest, prepareSession, prepareUrl, processResponse, querystring, redirectGet, redirectUnchanged, sink, spy, stream, streamLength, toughCookie, urlUtil, util, _;
 
 urlUtil = require("url");
 
@@ -30,6 +30,8 @@ debugResponse = debug("bhttp:response");
 
 extend = require("extend");
 
+devNull = require("dev-null");
+
 formData = require("form-data2");
 
 concatStream = require("concat-stream");
@@ -487,7 +489,7 @@ processResponse = function(request, response, requestState) {
           }
       }
     } else if (request.responseOptions.discardResponse) {
-      response.resume();
+      response.pipe(devNull());
       return Promise.resolve(response);
     } else {
       totalBytes = response.headers["content-length"];
@@ -505,8 +507,28 @@ processResponse = function(request, response, requestState) {
         });
       }
       return new Promise(function(resolve, reject) {
-        response.pipe(progressStream);
+        var attachProgressStream, _on, _progressStreamAttached, _resume;
-        response.pause();
+        _resume = response.resume.bind(response);
+        _on = response.on.bind(response);
+        _progressStreamAttached = false;
+        attachProgressStream = function() {
+          if (!_progressStreamAttached) {
+            debugResponse("attaching progress stream");
+            _progressStreamAttached = true;
+            return response.pipe(progressStream);
+          }
+        };
+        response.on = function(eventName, handler) {
+          debugResponse("'on' called, " + eventName);
+          if (eventName === "data" || eventName === "readable") {
+            attachProgressStream();
+          }
+          return _on(eventName, handler);
+        };
+        response.resume = function() {
+          attachProgressStream();
+          return _resume();
+        };
         if (request.responseOptions.stream) {
           return resolve(response);
         } else {
@@ -573,7 +595,7 @@ redirectUnchanged = function(request, response, requestState) {
 doRedirect = function(request, response, requestState, newOptions) {
   return Promise["try"](function() {
     if (!request.responseOptions.keepRedirectResponses) {
-      response.resume();
+      response.pipe(devNull());
     }
     requestState.redirectHistory.push(response);
     return bhttpAPI._doRequest(response.headers["location"], newOptions, requestState);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "bhttp",
-  "version": "1.1.0",
+  "version": "1.1.1",
   "description": "A sane HTTP client library for Node.js with Streams2 support.",
   "main": "index.js",
   "scripts": {
@@ -25,6 +25,7 @@
     "bluebird": "^2.8.2",
     "concat-stream": "^1.4.7",
     "debug": "^2.1.1",
+    "dev-null": "^0.1.1",
     "errors": "^0.2.0",
     "extend": "^2.0.0",
     "form-data2": "^1.0.0",

test-bhttp.coffee

@@ -2,6 +2,7 @@ bhttp = require "./"
 Promise = require "bluebird"
 fs = require "fs"
 util = require "util"
+devNull = require "dev-null"
 
 requestbinTarget = process.argv[2]
 if not requestbinTarget
@@ -118,7 +119,7 @@ testcases.push(Promise.try ->
 )
 
 testcases.push(Promise.try ->
-	# Cookie test
+	# No-redirect test
 	session = bhttp.session()
 	session.post "http://www.html-kit.com/tools/cookietester/",
 		cn: "testkey1"
@@ -128,10 +129,20 @@ testcases.push(Promise.try ->
 	console.log "NO-REDIR", response.headers["location"]
 )
 
+testcases.push(Promise.try ->
+	# Redirect test
+	bhttp.get "http://google.com/"
+.then (response) ->
+	console.log "REDIR", response.headers["location"], response.redirectHistory.length
+)
+
 Promise.all testcases
 	.then ->
 		bhttp.get "http://posttestserver.com/files/2015/01/19/f_03.01.01627545156", stream: true
 	.then (response) ->
 		#response.pipe process.stdout
-		response.resume()
+		response
+			.pipe(devNull())
+			.on "finish", ->
+				console.log "GET STREAM", "ok"
 

test-https-stream.coffee

@@ -0,0 +1,7 @@
+bhttp = require "./"
+Promise = require "bluebird"
+
+Promise.try ->
+	bhttp.get "https://google.com/"
+.then (response) ->
+	console.log "Got response", response

test-progress.coffee

@@ -1,6 +1,7 @@
 Promise = require "bluebird"
 bhttp = require "./"
 fs = require "fs"
+devNull = require "dev-null"
 
 formatLine = (line) -> line.toString().replace(/\n/g, "\\n").replace(/\r/g, "\\r")
 
@@ -32,6 +33,6 @@ Promise.try ->
 	console.log "Got response"
 	response.on "progress", (completedBytes, totalBytes, request) ->
 			console.log "#{completedBytes / totalBytes * 100}%", completedBytes, totalBytes
-	response.resume()
+	response.pipe(devNull())
 	response.on "end", ->
 		console.log "Completed response download"