piot / hazy-c

Hazy

uncertain or confused

Very basic Internet simulator for unreliable datagram transports (i.e UDP/IP). Useful for testing that an application will work reliably on Internet conditions.

Can simulate:

• Duplicate packets
• Out of Order packets
• Tamper packets
• Drop Packets
• Latency drift
• Latency jitter

Upcoming features

• Throttle
• Bandwidth usage warning

Usage

Initialize

Initialize a HazyDatagramTransportInOut.

Use hazyConfigRecommended() to get a default HazyConfig. The other is the datagram transport that Hazy should 'wrap'.

The transport field in HazyDatagramTransportInOut should be used for sending and receiving datagrams.

void hazyDatagramTransportInOutInit(HazyDatagramTransportInOut* self, DatagramTransport other,
                                    struct ImprintAllocator* allocator,
                                    struct ImprintAllocatorWithFree* allocatorWithFree, HazyConfig config, Clog log);

Update

Call this in the application update loop:

void hazyDatagramTransportInOutUpdate(HazyDatagramTransportInOut* self);

hazy-c's Issues

Latency drift

add support for latency drift that occurs for at a certain chance, over a random span of time (0.5 - 1.0 seconds) with a temporarily added latency ramping from 0 to about 150 ms.