BaH.libcurl: TCurlMulti [Solved, Compiler issue]
BlitzMax Forums/Brucey's Modules/BaH.libcurl: TCurlMulti [Solved, Compiler issue]
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| I've been trying to use TCurlMulti to download multiple files and not stall the program, since TCurlEasy.perform() seems to download the entire file and pause the rest of the program. Problem 1: multiPerform seems to do nothing, no matter how many TCurlEasy are added. The only callback ever called is the progress callback with 0 as parameter. No other information is sent out to stdout, even when enabling verbose. Wireshark reveals that no connection is ever made. Problem 2: BaH.libcurl seems to cause the executable to stop working on Windows XP with the not-a-valid-win32-binary error. Am I compiling it wrong? I'm using Windows 7 64bit and the BlitzMax demo. |
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| Did you get Brucey's latest module from svn? @1: Here's some code I'm using for this, it might give you a hint: http://www.blitzbasic.com/Community/post.php?topic=99640&post=1172294 It works under Win7/8/XP Linux and Mac. |
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| @Grisu: I took a look at it and the only thing that I noticed was different is that the TCurlMulti instance is created in Load(). Aside from that I noticed that bmk is calling both TDM-GCC64 and TDM-GCC binaries while building libcurl, I removed TDM-GCC64 from %Path% and now it seems to work, except that it still is not a valid win32 binary on Windows XP. (How did it even get to TDM-GCC64? The 32bit binaries were listed first in %Path%...) |
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| From an installation mismatch? Under Windows I use this MinGW distribution: http://nuwen.net/mingw.html |
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| I seem to have isolated the problem to the case where a TCurlMulti instance is used multiple times. As long as I recreate the instance, everything is fine again. Not the best solution, but it will have to do. Edit: Solved it by building on Windows XP. Unsure what is causing it to be an invalid win32 binary, since both system have an indentical setup. |
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| Example 5 in the examples folder shows basic multi usage. You may see the occasional momentary stall (fractions of a second) on calls to multiPerform(), because of the nature of BlitzMax's single-threadedness. But it generally performs without any noticeable waiting. You should be able to create a single instance of TCurlMulti and use it throughout the lifetime of an application, creating/removing any number of curl handles. Presumably, the demo-version of BlitzMax doesn't actually provide the MinGW parts (in bin and lib) for compiling non-BlitzMax code? (that the full version does). |
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| Thanks for the libcurl update! |
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