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Hiawatha crashes when uploading (with a simple POST request) somewhat large files, i've tried with a 270MB, a 560MB and a 610MB file and it works, but with a 620MB, a 680MB or a 775MB file, it crashes. the current max request size is 5GB (just for testing)

Valgrind report: http://pastie.org/10075242 (with the 775MB file)

Hiawatha version: Hiawatha v9.12, cache, IPv6, reverse proxy, SSL (1.3.10), URL toolkit, XSLT
Operating System: ElementaryOS 0.3 "freya" (ubuntu 14.04 based)

Replace the function merge_chunks() in src/http.c with this one and let me know if this solves your problem.

static long merge_chunks(char *buffer, int size, long *bytes_in_buffer) {
    int chunk_size, ch_len, len;
    long content_length = 0;
    char *end, *source, *destination;

    source = buffer;
    destination = buffer;

    do {
        if ((end = strstr(source, "\r\n")) == NULL) {
            return -1;
        }
        *end = '\0';
        chunk_size = hex_to_int(source);
        *end = '\r';

        if (chunk_size == -1) {
            return -1;
        }

        ch_len = end - source + 2;

        if (chunk_size == 0) {
            if ((len = *bytes_in_buffer - ((end + 4) - buffer)) > 0) {
                memmove(destination, end + 4, len);
                *bytes_in_buffer -= (ch_len + 2);
            }
            *(buffer + *bytes_in_buffer) = '\0';
        } else if (ch_len + chunk_size + 2 > size) {
            return -1;
        } else if (chunk_size > 0) {
            memmove(destination, end + 2, chunk_size);
            destination += chunk_size;
            size -= (ch_len + chunk_size + 2);
            source += (ch_len + chunk_size + 2);
            content_length += chunk_size;
            *bytes_in_buffer -= (ch_len + 2);
        }
    } while (chunk_size > 0);

    return content_length;
}

Still crashing.

Try this version of http.c and let me know if it works.

@Hugo,

Trouble with latest http.c where:
1. Compile error related to monitor_count_exploit_attempt (need change to monitor_count_exploit)
2. SSL not work (unfinish loading page)