Handle the gateway endpoint error

Related: #338

crates/gpapi/src/error.rs

@@ -0,0 +1,11 @@
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum PortalError {
+  #[error("Portal prelogin error: {0}")]
+  PreloginError(String),
+  #[error("Portal config error: {0}")]
+  ConfigError(String),
+  #[error("Gateway error: {0}")]
+  GatewayError(String),
+}

crates/gpapi/src/gateway/login.rs

@@ -6,6 +6,7 @@ use urlencoding::encode;
 
 use crate::{
   credential::Credential,
+  error::PortalError,
   gp_params::GpParams,
   utils::{normalize_server, parse_gp_error, remove_url_scheme},
 };
@@ -28,7 +29,13 @@ pub async fn gateway_login(gateway: &str, cred: &Credential, gp_params: &GpParam
 
   info!("Gateway login, user_agent: {}", gp_params.user_agent());
 
-  let res = client.post(&login_url).form(&params).send().await?;
+  let res = client
+    .post(&login_url)
+    .form(&params)
+    .send()
+    .await
+    .map_err(|e| anyhow::anyhow!(PortalError::GatewayError(e.to_string())))?;
+
   let status = res.status();
 
   if status.is_client_error() || status.is_server_error() {

crates/gpapi/src/lib.rs

@@ -1,5 +1,6 @@
 pub mod auth;
 pub mod credential;
+pub mod error;
 pub mod gateway;
 pub mod gp_params;
 pub mod portal;

crates/gpapi/src/portal/config.rs

@@ -7,9 +7,9 @@ use specta::Type;
 
 use crate::{
   credential::{AuthCookieCredential, Credential},
+  error::PortalError,
   gateway::{parse_gateways, Gateway},
   gp_params::GpParams,
-  portal::PortalError,
   utils::{normalize_server, parse_gp_error, remove_url_scheme, xml},
 };
 

crates/gpapi/src/portal/mod.rs

@@ -3,13 +3,3 @@ mod prelogin;
 
 pub use config::*;
 pub use prelogin::*;
-
-use thiserror::Error;
-
-#[derive(Error, Debug)]
-pub enum PortalError {
-  #[error("Portal prelogin error: {0}")]
-  PreloginError(String),
-  #[error("Portal config error: {0}")]
-  ConfigError(String),
-}

crates/gpapi/src/portal/prelogin.rs

@@ -6,8 +6,8 @@ use serde::Serialize;
 use specta::Type;
 
 use crate::{
+  error::PortalError,
   gp_params::GpParams,
-  portal::PortalError,
   utils::{base64, normalize_server, parse_gp_error, xml},
 };