virtual size_t read(void* ptr, size_t bytes) override {
assert(0 <= m_send_data_progress);
assert(m_send_data_progress <= static_cast<int64_t>(m_send_data.size()));
if(m_cancel) { return 0; }
auto send_bytes = std::min(static_cast<int64_t>(bytes), static_cast<int64_t>(m_send_data.size()) - m_send_data_progress);
std::memcpy(ptr, m_send_data.data() + m_send_data_progress, send_bytes);
m_send_data_progress += send_bytes;
return send_bytes;
}
void connection::write(http::buffer const& message, completion_handler&& handler)
{
LOG_COMP_TRACE_FUNCTION(connection);
connection_->write_buffer(message, std::forward<completion_handler>(handler));
context_.get_statistics_manager().add_output_message(message.size());
}
virtual bool seek(int64_t offset, int origin) override {
if(m_send_file) {
switch(origin) {
case SEEK_SET:
case SEEK_CUR:
case SEEK_END: return (std::fseek(m_send_file.get(), static_cast<long>(offset), origin) != 0);
default: assert(false); return false;
}
} else {
switch(origin) {
case SEEK_SET: m_send_data_progress = offset; return true;
case SEEK_CUR: m_send_data_progress += offset; return true;
case SEEK_END: m_send_data_progress = offset + m_send_data.size(); return true;
default: assert(false); return false;
}
}
}
void prepare_send_data() {
assert(m_post_form.empty());
if(!m_send_data.empty()) {
assert(!m_send_file);
curl_easy_setopt(handle, CURLOPT_INFILESIZE_LARGE, static_cast<curl_off_t>(m_send_data.size()));
curl_easy_setopt(handle, CURLOPT_UPLOAD, 1);
}
if(m_send_file) {
assert(m_send_data.empty());
// set the FILE pointer as read data in CURL
curl_easy_setopt(handle, CURLOPT_READFUNCTION, nullptr);
curl_easy_setopt(handle, CURLOPT_READDATA, m_send_file.get());
curl_easy_setopt(handle, CURLOPT_INFILESIZE_LARGE, static_cast<curl_off_t>(m_send_file_size));
curl_easy_setopt(handle, CURLOPT_UPLOAD, 1);
}
}