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add some docs and correct improve error print #19

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add some docs and correct improve error print #19

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13 changes: 13 additions & 0 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -84,3 +84,16 @@ localhost:8080/api/stats/SYMBOL
![client screen shot](doc/clientss.png)
![web screen shot](doc/webss.png)
![lit screen shot](doc/litss.png)

# Common issues

## Error: `route ip+net: no such network interface`

This error is most likely caused because `got_settings` is configured by default as `multicast_intf=lo0`.

The lo0 interface is a loopback interface on Unix-based systems, but it might not be named lo0 on all systems. On Linux, it's usually named lo. On macOS and some BSD systems, it might be named lo0.

Ensure that the lo0 interface exists on your system. You can list network interfaces using:

- Linux/macOS: `ifconfig` or `ip a`
- Windows: `ipconfig /all`
2 changes: 1 addition & 1 deletion internal/exchange/marketdata.go
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Expand Up @@ -257,7 +257,7 @@ func startMarketData() {
}
_intf, err := net.InterfaceByName(intf)
if err != nil {
panic("unable to read multicast interface")
panic(err)
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I think this might be better as:

panic(fmt.Errorf("unable to find multicast interface %q: %w",intf,err))

}

fmt.Println("publishing marketdata at", saddr)
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