socket2 | Advanced configuration options for sockets | Socket library

On-chain programs are limited in what resources they can access. For example, you can't access the internet or filesystem. Your program seems to be relying on some of these forbidden packages.

Here's more info from the documentation about using rand, which is also not allowed: https://docs.solana.com/developing/on-chain-programs/developing-rust#depending-on-rand

I solved this problem by doing the following steps:

1. Giving up socket.io-client and moving to ngx-socket-io. Guess we should not use socket.io-client directly if we are using an Angular frontend.

After doing so, I found that the console on the browser starts popping up cors errors. And

1. I added the white list for the server-side socket io initialization.

Unfortunately boost documentation on dynamic_buffer is extremely laconic:

A dynamic buffer encapsulates memory storage that may be automatically resized as required.

meaning that dynamic_buffer will manipulate the underlying vector during IO operations.

Boost ASIO tutorial is more explicit:

Dynamic buffer is a concept. Dynamic buffer is a buffer that you can write data into or read from it. If the buffer isn't big enough to fit your data then it will resize (grow) dynamically. So when you write into the dynamic buffer you don't have to worry if there is enough space left in the buffer. On the other hand, when you read data from a dynamic buffer, you are responsible to throw away (consume) bytes read and no longer needed so the buffer won't grow permanently.

Write operation on dynamic buffer in boost calls consume method of dynamic_buffer that erases bytes_tranferred from it:

Why was socket2 v0.4.0 compiled? I don't know which package requires it. I want to see the chain of dependencies that led to socket2 to know whose package's version to lower to make it compile.

This can be seen by running cargo tree -i socket2 (you may have to install the subcommand separately on older toolchains), which for me looks like this:

You need to convert the socket into a type such as tokio::net::UnixListener. Once you have done this, you need an implementation of the Accept trait. You can implement that trait in the following manner:

1. InputStream.read returns -1 on end of stream

2. To end the socket OutputStream, you need to call shutdown

Quite simply, the stream isn't ended until you end it. That there is no more data right now is not the same as the stream being ended; you could always write more data until the stream is ended.

Incase of IPV6, ::1/128 is the only address assigned to the loopback interface lo by default.

You need to assign ::2/128 also to the loopback interface. Then the second :ssl:listen() would work

Here is what you need,