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Debug an issue in existing C++ program on data files questing from ftp server --

Microsoft Visual Studio/C++/curl.h/netcdf.h

Issue specification:

The program was written specifically for accessing data of the 'GLBu0.08' grids through Hycom

[login to view URL]

The program worked well for this grid but FAILED TO FIND any files when I attempted to access the data of 'GLBv0.08' grids.

The two worked and failed ftp addresses being:

ftp://[login to view URL]

and

ftp://[login to view URL]

My guess: The file names are different in lengths. GLBu0.08 files have substrings 'glb' while GLBv0.08 files have substring 'glbv'

It might be related to the curl options.

std::string buffer("");

if (curl) {

curl_easy_setopt(curl, CURLOPT_URL, yInfo.ftpFileBase.c_str());

curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback);

curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void*)(&buffer));

/* list only */

curl_easy_setopt(curl, CURLOPT_DIRLISTONLY, 1L);

int ret = curl_easy_perform(curl);

if (ret != CURLE_OK) {

std::cout << "Failled to read file names. Error code: "<< ret <<std::endl;

}

curl_easy_cleanup(curl);

}

For the worked case, the curl returned 'buffer' with good length ([login to view URL]() = 11368), whereas for the failed case the curl returned 'buffer' with bad length ([login to view URL]() = 5), which might cause the issue.

技能: .NET, C 编程, C# 编程, C++编程, 软件构架

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( 13个评论 ) Narragansett, United States

项目ID: #21192728

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erndsglts

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Valuesolutions

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