search for: curl_version

...using OpenSSL or LibreSSL for TLS, you usually get away with forking (though it's still bad practice). The standard version of libcurl that ships with MacOS was using CoreFoundation until 10.12 but starting 10.13 they switched to LibreSSL in order to support HTTP/2. See curl --version or curl::curl_version() for your local config. Don't count in this though, Apple might switch back to the fork-unsafe DarwinSSL once they support ALPN, which is needed for HTTP/2. As Gabor already suggested, libcurl has built-in systems for concurrent connections. The curl package exposes this via multi_add functio...

...rform 00000000000060e0 T R_curl_easy_setopt 0000000000005710 T R_curl_escape 0000000000005440 T R_curl_getpasswd 0000000000006950 T R_curl_global_cleanup 0000000000006930 T R_curl_global_init 0000000000004af0 T R_curl_progress_callback 00000000000042f0 T R_curl_ssl_ctx_callback 0000000000005c10 T R_curl_version 0000000000005bf0 T R_curl_version_info 0000000000005270 T R_curl_write_binary_data 00000000000051b0 T R_curl_write_data 00000000000051d0 T R_curl_write_header_data U R_do_MAKE_CLASS U R_do_new_object U R_do_slot U R_do_slot_assign...

...rform 00000000000060e0 T R_curl_easy_setopt 0000000000005710 T R_curl_escape 0000000000005440 T R_curl_getpasswd 0000000000006950 T R_curl_global_cleanup 0000000000006930 T R_curl_global_init 0000000000004af0 T R_curl_progress_callback 00000000000042f0 T R_curl_ssl_ctx_callback 0000000000005c10 T R_curl_version 0000000000005bf0 T R_curl_version_info 0000000000005270 T R_curl_write_binary_data 00000000000051b0 T R_curl_write_data 00000000000051d0 T R_curl_write_header_data U R_do_MAKE_CLASS U R_do_new_object U R_do_slot U R_do_slot_assign...

I have an lapply function call that I want to parallelize. Below is a very simplified version of the code: url_base <- "https://cloud.r-project.org/src/contrib/" files <- c("A3_1.0.0.tar.gz", "ABC.RAP_0.9.0.tar.gz") res <- parallel::mclapply(files, function(s) download.file(paste0(url_base, s), s)) Instead of download a couple of files in parallel, I get a

1.6.1 svn 190575: CC="cc" CXX="g++" LD="" AR="" RANLIB="" CFLAGS="" make -C menuselect CONFIGURE_SILENT="--silent" menuselect make[1]: Entering directory `/home/asterisk/rpmbuild/BUILD/asterisk-1.6.1/menuselect' gcc -m64 -march=native -mtune=native -floop-interchange -floop-strip-mine -floop-block -c -o