Classical problem:
error: failed retrieving file ... : Operation too slow. Less than 1 bytes/sec transferred the last 10 seconds
/usr/local/bin/pacman-curl/etc/pacman.conf:XferCommand = /usr/local/bin/pacman-curl %o %u
ParallelDownloads = 1 # suggested
| #!/usr/bin/env bash | |
| # pacman-curl: quiet curl + our own progress bar (filename + ###) | |
| out="$1"; url="$2" | |
| # show nice name without .part | |
| base="$(basename "${out%.part}")" | |
| # try to get total size (may be empty if server doesn't send it) | |
| total=$(curl -sIL -o /dev/null -w '%{size_download}\n' "$url") | |
| if [[ -z "$total" || "$total" -eq 0 ]]; then | |
| total=$(curl -sIL "$url" | awk -v IGNORECASE=1 '/^Content-Length:/ {print $2}' | tail -n1 | tr -d '\r') | |
| fi | |
| # start the download (silent, resumable, retries) | |
| # (stderr quiet; errors still printed) | |
| curl -L -C - --retry 20 --retry-delay 5 --connect-timeout 30 -sS -o "$out" "$url" & | |
| cpid=$! | |
| bar_w=32 | |
| draw() { | |
| local got="$1" pct=0 done=0 bar fill | |
| if [[ -n "$total" && "$total" -gt 0 ]]; then | |
| pct=$(( got*100/total )) | |
| (( pct>100 )) && pct=100 | |
| done=$(( pct*bar_w/100 )) | |
| else | |
| # unknown size => animate bar based on bytes | |
| done=$(( (got/131072) % (bar_w+1) )) | |
| fi | |
| bar=$(printf '%*s' "$done" '' | tr ' ' '#') | |
| fill=$(printf '%*s' $((bar_w-done)) '' | tr ' ' ' ') | |
| if [[ -n "$total" && "$total" -gt 0 ]]; then | |
| printf '\r%s [%s%s] %3d%%' "$base" "$bar" "$fill" "$pct" >&2 | |
| else | |
| # no total => show bytes | |
| printf '\r%s [%s%s] %s' "$base" "$bar" "$fill" "$(numfmt --to=iec --suffix=B $got 2>/dev/null || echo ${got}B)" >&2 | |
| fi | |
| } | |
| # monitor file size and draw bar until curl exits | |
| while kill -0 "$cpid" 2>/dev/null; do | |
| f="$out" | |
| [[ -e "$out.part" ]] && f="$out.part" | |
| got=$(stat -c %s "$f" 2>/dev/null || echo 0) | |
| draw "$got" | |
| sleep 0.2 | |
| done | |
| wait "$cpid"; rc=$? | |
| # final draw to 100% if we know total, then newline | |
| if [[ "$rc" -eq 0 ]]; then | |
| f="$out" | |
| [[ -e "$out.part" ]] && f="$out.part" | |
| got=$(stat -c %s "$f" 2>/dev/null || echo 0) | |
| [[ -n "$total" && "$total" -gt 0 ]] && draw "$total" || draw "$got" | |
| printf '\n' >&2 | |
| fi | |
| exit "$rc" |