int http_client::write_head(const http_header& header)
{
chunked_transfer_ = header.chunked_transfer();
string buf;
if (header.is_request())
header.build_request(buf);
else
header.build_response(buf);
return get_ostream().write(buf.c_str(), buf.length());
}
bool http_client::write_body(const void* data, size_t len)
{
ostream& fp = get_ostream();
if (chunked_transfer_ == false)
{
if (data == NULL || len == 0)
return true;
if (fp.write(data, len) == -1)
{
disconnected_ = true;
return false;
}
else
return true;
}
// 如果设置了 chunked 传输方式，则按块传输方式写数据
if (data == NULL || len == 0)
{
if (fp.format("0\r\n\r\n") == -1)
{
disconnected_ = true;
return false;
}
else
return true;
}
if (fp.format("%x\r\n", (int) len) == -1
|| fp.write(data, len) == -1
|| fp.write("\r\n", 2) == -1)
{
disconnected_ = true;
return false;
}
return true;
}
// expose good bit of underlying stream object
bool good() const { return get_ostream().good(); }