http

general_code/201_http_request_btc_price.rs

@@ -0,0 +1,10 @@
+// [dependencies]
+// reqwest = "0.11"
+
+use std::error::Error;
+
+fn main() -> Result<(), Box<dyn Error>> {
+    let resp = reqwest::blocking::get("https://api.coindesk.com/v1/bpi/currentprice.json")?.text()?;
+    println!("{:#?}", resp);
+    Ok(())
+}

general_code/202_http_crate_only.rs

@@ -0,0 +1,10 @@
+use http::{Request, Response};
+
+fn main() {
+let mut request = Request::builder();
+request.uri("https://api.coindesk.com/v1/bpi/currentprice.json")
+       .header("User-Agent", "my-awesome-agent/1.0");
+
+println!("{:#?}", request)
+}
+

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general_code/Cargo.toml

@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+reqwest = { version = "0.11", features = ["blocking"] }

general_code/src/main.rs

@@ -1,10 +1,11 @@
-fn main() {
+use std::error::Error;
+
+fn main() -> Result<(), Box<dyn Error>> {
 
     //// 000_println.rs
     println!("Printed text.");
     print!("No new line.");
 
-
     //// 010_add_distract_math_literal_operator.rs
     //https://doc.rust-lang.org/rust-by-example/primitives/literals.html
     println!("1 + 2 = {}", 1u32 + 2);
@@ -31,6 +32,10 @@ fn main() {
     reverse((1,true));
     tuplez();
 
+    // HTTP example
+    let body = reqwest::blocking::get("https://api.coindesk.com/v1/bpi/currentprice.json")?.text()?;
+    println!("body = {:?}", body);
+    Ok(())
 }
 
 
@@ -96,4 +101,3 @@ fn tuplez() {
     println!("{:?}", matrix);
 
 }
-