How to build on Windows operating system?

[hzqd]

I cloned this project, and type cargo build --release, getting error message:

error[E0432]: unresolved imports `rlimit::getrlimit`, `rlimit::setrlimit`, `rlimit::RawRlim`, `rlimit::Resource`, `rlimit::Rlim`
  --> src\main.rs:27:14
   |
27 | use rlimit::{getrlimit, setrlimit, RawRlim, Resource, Rlim};
   |              ^^^^^^^^^  ^^^^^^^^^  ^^^^^^^  ^^^^^^^^  ^^^^ no `Rlim` in the root
   |              |          |          |        |
   |              |          |          |        no `Resource` in the root
   |              |          |          no `RawRlim` in the root
   |              |          no `setrlimit` in the root
   |              no `getrlimit` in the root

error[E0412]: cannot find type `RawRlim` in crate `rlimit`
   --> src\input.rs:115:32
    |
115 |     pub ulimit: Option<rlimit::RawRlim>,
    |                                ^^^^^^^ not found in `rlimit`

error[E0412]: cannot find type `RawRlim` in crate `rlimit`
   --> src\input.rs:219:28
    |
219 |     ulimit: Option<rlimit::RawRlim>,
    |                            ^^^^^^^ not found in `rlimit`

error[E0282]: type annotations needed
   --> src\input.rs:115:17
    |
113 |     /// Automatically ups the ULIMIT with the value you provided.
    |     ------------------------------------------------------------- this method call resolves to `T`
114 |     #[structopt(short, long)]
115 |     pub ulimit: Option<rlimit::RawRlim>,
    |                 ^^^^^^ cannot infer type for type parameter `U` declared on the associated function `map`

warning: unused import: `std::convert::TryInto`
  --> src\main.rs:29:5
   |
29 | use std::convert::TryInto;
   |     ^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(unused_imports)]` on by default

error: aborting due to 4 previous errors; 1 warning emitted

Some errors have detailed explanations: E0282, E0412, E0432.
For more information about an error, try `rustc --explain E0282`.
error: could not compile `rustscan`

How can I build it on Windows?

[sunlewuyou]

I have the same problem。

[Fenex]

To compile the project under windows you can apply a patch below on 198225a commit:

diff --git a/Cargo.toml b/Cargo.toml
index bb4ad9b..43d4409 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,6 @@ colored = "2.0.0"
 structopt = "0.3.20"
 async-std = "1.7.0"
 futures = "0.3"
-rlimit = "0.5.2"
 shell-words = "1.0.0"
 log = "0.4.0"
 env_logger = "0.8.2"
@@ -40,6 +39,9 @@ anyhow = "1.0.34"
 subprocess = "0.2.6"
 text_placeholder = { version = "0.4", features = ["struct_context"] }
 
+[target."cfg(not(windows))".dependencies]
+rlimit = "0.5.2"
+
 [dev-dependencies]
 wait-timeout = "0.2"
 
diff --git a/src/input.rs b/src/input.rs
index d0ea366..8906960 100644
--- a/src/input.rs
+++ b/src/input.rs
@@ -112,7 +112,7 @@ pub struct Opts {
 
     /// Automatically ups the ULIMIT with the value you provided.
     #[structopt(short, long)]
-    pub ulimit: Option<rlimit::RawRlim>,
+    pub ulimit: Option<super::RawRlim>,
 
     /// The order of scanning to be performed. The "serial" option will
     /// scan ports in ascending order while the "random" option will scan
@@ -216,7 +216,7 @@ pub struct Config {
     batch_size: Option<u16>,
     timeout: Option<u32>,
     tries: Option<u8>,
-    ulimit: Option<rlimit::RawRlim>,
+    ulimit: Option<super::RawRlim>,
     scan_order: Option<ScanOrder>,
     command: Option<Vec<String>>,
     scripts: Option<ScriptsRequired>,
diff --git a/src/main.rs b/src/main.rs
index ac9d73b..bee370a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -24,6 +24,7 @@ use scripts::{init_scripts, Script, ScriptFile};
 use cidr_utils::cidr::IpCidr;
 use colorful::{Color, Colorful};
 use futures::executor::block_on;
+#[cfg(not(target_os = "windows"))]
 use rlimit::{getrlimit, setrlimit, RawRlim, Resource, Rlim};
 use std::collections::HashMap;
 use std::convert::TryInto;
@@ -33,6 +34,7 @@ use std::net::{IpAddr, ToSocketAddrs};
 use std::path::Path;
 use std::string::ToString;
 use std::time::Duration;
+
 use trust_dns_resolver::{
     config::{ResolverConfig, ResolverOpts},
     Resolver,
@@ -41,6 +43,9 @@ use trust_dns_resolver::{
 extern crate colorful;
 extern crate dirs;
 
+#[cfg(target_os = "windows")]
+type RawRlim = u64;
+
 // Average value for Ubuntu
 const DEFAULT_FILE_DESCRIPTORS_LIMIT: RawRlim = 8000;
 // Safest batch size based on experimentation
@@ -331,6 +336,14 @@ fn read_ips_from_file(
     Ok(ips)
 }
 
+// Rlimit does not support Windows
+// set to 1000 if Windows is used
+#[cfg(target_os = "windows")]
+fn adjust_ulimit_size(_opts: &Opts) -> RawRlim {
+    1000
+}
+
+#[cfg(not(target_os = "windows"))]
 fn adjust_ulimit_size(opts: &Opts) -> RawRlim {
     if opts.ulimit.is_some() {
         let limit: Rlim = Rlim::from_raw(opts.ulimit.unwrap());